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GSFC X-673-64-1F

ENGINEERING DRAWING STANDARDS MANUAL

S AND SPA C I C UT

E

NAL O TI

N U. S. A.

INISTRA TIO

AERO N

M AD

A

August 1994

NA

X-673-64-1F Supersedes GSFC X-673-64-1E/July 1991

ENGINEERING DRAWING STANDARDS MANUAL Mechanical Engineering Branch Goddard Space Flight Center Greenbelt, Maryland

AND SPA ICS C T U

E

ON TI

INISTRA TIO

AL AERON

M AD

A

August 1994

N U. S. A.

NA

National Aeronautics and Space Administration Goddard Space Flight Center Greenbelt, Maryland 20771 1994

DESCRIPTION OF REVISION T h i s r e v i s i o n , w h i c h s u p e r s e d e s t h e G o d d ar d S p a c e F l i g h t C e n t e r ( G S F C ) S t a n d a r d X - 6 7 3 - 6 4 - 1 E , E n g in e e r in g D r a win g S ta n d a r d s M a n u a l, is in te n d e d to u p d a te a n d r e f le c t th e la te s t f o r ma ts a n d s ta n d a r d s a d o p te d b y G S F C. T h e f o llo w in g is a s u mma r y o f th e p r in c ip a l c h a n g e s a n d imp r o v e me n ts in c o r p o r a te d in this issue: a.

A d d itio n o f Co mp o s ite Ma te r ia l D r a w in g d e f in itio n .

b . C h a n g in g o f t h e s i g n a t u r e t o a p r i n t e d n a me i n T i t l e b lo c k s . c.

N e w e x a mp l e o f t h e M e t r i c D r a w i n g s f o r ma t a n d t o l e r a n c e p r e s e n t a t i o n .

d . I mp r o v e d p l a c e me n t o f v i e w s o n T y p e s o f D r a w i n g s s a mp l e s t o p r e v e n t u n n e c e s s a r y r e w o r k o f d r a w in g s a t a la te r d a te . e.

N e w E n g in e e r i n g O r d e r ( E O ) f o r ms a d d e d ; o ld E O f o r ms w i l l b e p h a s e d o u t.

f.

A d d itio n a l n o te s o n v a r io u s to p ic s a d d e d to N o te E x a mp le s s e c tio n .

g . D e le tio n o f mic r o f ilmin g r e q u ir e me n ts f o r d r a w in g f o r ma t. h . F lo w c h a r t f o r f lig h t p r o j e c ts r e d e f in e d .

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PREFACE T h e G S F C E n g in e e r in g D r a win g S ta n d a r d s M a n u a l i s t h e o f f i c i a l s o u r c e f o r t h e r e q u ir e me n ts a n d in te r p r e ta tio n s to b e u s e d in th e d e v e lo p me n t a n d p r e s e n ta tio n o f e n g in e e r in g d r a w in g s a n d r e la te d d o c u me n ta tio n f o r th e G S F C. T h e M e c h a n i c a l E n g i n e e r i n g B r a n c h , M e c h a n i c a l S y s t e ms D iv is io n , h a s b e e n d e le g a te d t h e r e s p o n s i b i l i t y f o r i n t e r p r e t a t i o n , p e r i o d ic u p d a t e s , a n d d i s t r ib u t i o n o f t h e G S F C E n g in e e r in g D r a win g S ta n d a r d s M a n u a l. A ll E n g in e e r in g D ir e c to r a te d e s ig n o r g a n iz a tio n s a n d th e ir c o n tr a c to r s s h a ll a d h e r e to th e r e q u ir e me n ts o f th is ma n u a l w h e n p r e p a r in g G S F C e n g in e e r in g d o c u me n ta tio n f o r f lig h t h a r d w a r e a n d g r o u n d s u p p o r t s ys te ms . Co mme n ts o r in q u ir ie s c o n c e r n in g th is ma n u a l s h o u ld b e d ir e c te d to th e Me c h a n ic a l E n g in e e r in g Br a n c h , Co d e 7 2 2 .

D r . A lla n S h e r ma n D ir e c to r o f E n g in e e r in g

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TABLE OF CONTENTS INTRODUCTION ....................................................................................................... 1 1. DRAWING ELEMENTS .......................................................................................... 3 1.1. Drawing Sizes ................................................................................................. 3 1.2. Multisheet Drawings ........................................................................................ 3 1.3. Zoning ............................................................................................................ 4 1 . 4 . T i t l e B l o c k an d R e v i s i o n B l o c k . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 1 . 5 . D r a w i n g F o r ma t . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 0 2. NOMENCLATURE ................................................................................................ 11 2.1. Drawing Title ................................................................................................. 11 2.2. Abbreviations ................................................................................................. 12 2.3. List of Material .............................................................................................. 14 2 . 3 . 1 . R e q u i r e me n t s o n t h e B o d y o f t h e D r a w i n g . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 4 2 . 3 . 2 . R e q u i r e me n t s i n t h e L i s t o f M a t e r i a l . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 4 2.4. Notes on Drawings .......................................................................................... 15 2 . 4 . 1 . S e c u r i t y C l a s s i f i c at i o n . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 5 2.4.2. Note Location........................................................................................ 15 2 . 4 . 3 . N u mb e r i n g o f N o t e s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 6 2 . 4 . 4 . N o t e E x a mp l e s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 6 2 . 4 . 4 . 1 . D i me n s i o n N o t e s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 6 2.4.4.2. Heat Treating Notes.................................................................... 17 2 . 4 . 4 . 3 . J o i n i n g Me t h o d N o t e s ( w e l d i n g , b r a z i n g , e t c . ) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 8 2.4.4.4. Plating and Coating Notes ........................................................... 18 2.4.4.5. Surface Preparation Notes ........................................................... 19 2.4.4.6. Testing and Inspection Notes ....................................................... 20 2.4.4.7. Threaded Inserts — Cleaning and Installation Notes ....................... 20 2.4.4.8. Miscellaneous Notes ................................................................... 21 2 . 4 . 4 . 9 . I n f o r ma t i o n a l N o t e s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 3 2.4.5. Local Character Notes ............................................................................ 23 2 . 4 . 6 . G e n e r a l D i me n s i o n a l T o l e r a n c e N o t e s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 3 2 . 5 . S p e c i f i c a t io n C a l l o u t s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 3 3. DRAFTING PRACTICES ....................................................................................... 25 3.1. General .......................................................................................................... 25 3.2. Lines ............................................................................................................. 25 3.2.1. Ink Lines and Plotted Lines .................................................................... 25 3.2.2. Pencil Lines .......................................................................................... 27 3.2.3. Types of Lines....................................................................................... 27 3.2.3.1. Center Lines .............................................................................. 27 3 . 2 . 3 . 2 . D i me n s i o n L i n e s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 8 3.2.3.3. Leaders ..................................................................................... 28 3.2.3.4. Break Lines ............................................................................... 28 3.2.3.5. Phantom Lines ........................................................................... 29 3.2.3.6. Sectioning Lines ........................................................................ 29 3.2.3.7. Extension Lines ......................................................................... 30 3.2.3.8. Hidden Lines ............................................................................. 30 3.2.3.9. Stitch Lines ............................................................................... 30 3.2.3.10. Outlines or Visible Lines........................................................... 30 3.2.3.11. Datum Lines ............................................................................ 30 3 . 2 . 3 . 1 2 . C u t t i n g - P l a n e / V ie w i n g - P l a n e L i n e s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 0 3 . 3 . L e t t e r i n g a n d N u me r a l s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 1 3.3.1. Style .................................................................................................... 31 3.3.2. Heights ................................................................................................. 32 3.4. Scale ............................................................................................................. 32 3.5. Positioning the Part on the Drawing .................................................................. 33

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3.5.1. Picturization ......................................................................................... 33 3.5.2. Sections ................................................................................................ 34 3.5.3. Views ................................................................................................... 36 3.5.4. Details.................................................................................................. 37 3 . 5 . 5 . I d e n t i f i c a t i o n o f S e ct i o n s , V i e w s , a n d D e t a i l s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 7 3 . 5 . 6 . L o c a t i n g S e c t i o n s, V i e w s , a n d D e t a i l s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 8 TYPES OF DRAWINGS ......................................................................................... 39 4.1. Altered or Selected Vendor Part Drawing .......................................................... 39 4 . 2 . A s s e mb l y D r a w i n g . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 0 4.3. Detail Drawing ............................................................................................... 41 4.4. Drawing Tree ................................................................................................. 42 4 . 5 . E l e c t r i c a l / E l e c tr o n i c D r a w i n g s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 3 4 . 5 . 1 . E l e c t r i c a l a n d E l e c t r o n i c S y mb o l s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 3 4 . 5 . 2 . E l e c t r i c a l a n d E l e c t r o n i c D i a g r a ms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 3 4 . 6 . I n s e p a r a b l e A s s e mb l y D r a w i n g . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 4 4 . 7 . I n s t a l l a t i o n A s s e mb l y D r a w i n g . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 5 4.8. Interface Control Drawing ............................................................................... 46 4.9. Matched-Set Drawing ...................................................................................... 48 4 . 1 0 . M e c h a n i c a l S c h e ma t i c . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 9 4.11. Modification Drawing .................................................................................... 51 4.12. Outline Drawing ........................................................................................... 51 4.13. Source Control Drawing ................................................................................. 53 4 . 1 4 . S p e c i f i c a t i o n Co n t r o l D r a w i n g . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 4 4.15. Standard Part Drawing ................................................................................... 56 4.16. Tabulated Drawing ........................................................................................ 56 4.17. Tooling Drawing ........................................................................................... 57 4 . 1 8 . C o mp o s i t e M a t e r i a l D r a w i n g . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 8 NUMBERING SYSTEM FOR DRAWINGS AND SUPPORTING DOCUMENTATION . 60 5 . 1 . P a r t N u mb e r i n g . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 1 5 . 2 . F i n d o r I t e m N u mb e r i n g . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 2 5.3. Order of Precedence of Specifications and Standards .......................................... 62 5.3.1. Group I ................................................................................................. 62 5.3.2. Group II ............................................................................................... 62 5.3.3. Group III .............................................................................................. 63 5.3.4. Group IV .............................................................................................. 63 5.3.5. Group V................................................................................................ 63 ENGINEERING ORDER ........................................................................................ 64 6 . 1 . G e n e r a l R e q u i r e me n t s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 4 6 . 2 . F o r ma t S a mp l e . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 4 DRAWING REVISIONS ......................................................................................... 68 7 . 1 . R e v i s i o n Me t h o d s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 8 7.2. Revision Identification .................................................................................... 68 7.3. Revision of Multisheet Drawings ...................................................................... 68 7.4. Revision Recording ......................................................................................... 68 7.5. Redrawn or Replaced Drawings ........................................................................ 70 PARTS LIST AND INDEX LIST ............................................................................. 71 8.1. Definitions ..................................................................................................... 71 8 . 2 . R e q u i r e me n t s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 1 8.2.1. List Preparation ..................................................................................... 71 8 . 2 . 2 . L i s t F o r ma t s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 2 8.2.3. Revision Identification ........................................................................... 72 8 . 2 . 4 . D e l e t i n g I t e ms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 2 8 . 2 . 5 . A d d i n g I t e ms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 2 8.3. Cover Sheet.................................................................................................... 72 8 . 3 . 1 . F o r ma t . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 2

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8.3.2. Entries.................................................................................................. 72 8 . 4 . P a r t s L i s t Co n t i n u a t i o n S h e e t . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 5 8 . 4 . 1 . F o r ma t . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 5 8.4.2. Entries.................................................................................................. 75 8 . 5 . I n d e x L i s t Co n t i n u a t i o n S h e e t . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 7 8 . 5 . 1 . F o r ma t . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 7 8.5.2. Entries.................................................................................................. 77 8 . 6 . F i n d o r I t e m N u mb e r S ys t e m o f I d e n t i f i c a t i o n . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 9 8.6.1. Definition ............................................................................................. 79 8 . 6 . 2 . A p p l i c a t i o n a n d L i mi t a t i o n . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 9 8 . 6 . 3 . D r a w i n g R e q u i r e me n t s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 0 8.7. List of Material .............................................................................................. 81 8 . 7 . 1 . F o r ma t . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 1 8.7.2. Entries.................................................................................................. 81 9. DOCUMENTATION MANAGEMENT ..................................................................... 82 9.1. Typical Drawing Flow for Flight Projects .......................................................... 82 9.2. Archiving....................................................................................................... 83 9 . 3 . C o mp u t e r - A i d e d D e s i g n D r a w i n g s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 3 9 . 3 . 1 . P r e s e n t a t i o n o f C o mp u t e r - G e n e r a t e d D a t a . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 3 9 . 3 . 2 . D e v e l o p i n g a n d U s i n g C o mp u t e r - G e n e r a t e d D r a w i n g s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 4 9.3.3. Specification Data ................................................................................. 84 1 0 . D E S I G N R E F E R E N C E S , S TA N D A R D S , A N D S P E C I F I C A T I O N S . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 5 1 0 . 1 . D i me n s i o n i n g a n d T o l e r a n c i n g . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 5 1 0 . 1 . 1 . D i me n s i o n i n g a n d T o l e r a n c i n g P r a c t i c e s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 5 1 0 . 1 . 2 . S t a t e me n t s o n D i me n s i o n i n g . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 5 1 0 . 2 . M e t r i c D i me n s i o n i n g . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 6 1 0 . 2 . 1 . S I U n i t s a n d S y mb o l s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 6 10.2.2. Unit Conversions ................................................................................. 89 1 0 . 2 . 2 . 1 . C o n v e r s i o n o f D i me n s i o n s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 9 10.2.2.2. Unit Rounding.......................................................................... 89 10.3. Design References ......................................................................................... 92 10.4. Control of Surface Roughness......................................................................... 93 10.4.1. Surface Texture ................................................................................... 93 1 0 . 4 . 2 . S u r f a c e T e x t u r e S y mb o l s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 3 10.4.3. Surface Texture Standards..................................................................... 93 10.5. Thread Specifications .................................................................................... 93 10.6. Welding—Fusion and Resistance ..................................................................... 95 10.6.1. General ............................................................................................... 95 1 0 . 6 . 2 . B a s i c W e l d S y mb o l s a n d T h e i r L o c a t i o n S i g n i f i c a n c e . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 5 10.7. Outgassing of Spacecraft Materials ................................................................. 95 10.8. Standards and Specifications Index ................................................................. 96 10.8.1. National Bureau of Standards ................................................................ 96 10.8.2. Federal ............................................................................................... 96 10.8.3. Industrial ............................................................................................ 97 10.8.4. Military .............................................................................................. 98 10.8.5. NASA ............................................................................................... 100 1 0 . 9 . S t a n d a r d s a n d S p e c i f i c at i o n s N u me r i c a l I n d e x . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 0 1 A P P E N D I X A . D E S I G N R EV I E W D O s A N D D O N ' T s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 0 7 INDEX.................................................................................................................... 110

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1

INTRODUCTION T h is d r a w in g s ta n d a r d s ma n u a l e s ta b lis h e s th e c o n v e n tio n s to b e a d h e r e d to b y e n g in e e r in g a n d d r a f tin g p e r s o n n e l in th e p r e p a r a tio n , r e v is io n , a n d c o mp le tio n o f e n g i n e e r i n g d r a w i n g s . T h i s ma n u a l s e t s f o r t h t h e min i mu m r e q u i r e me n t s a c c e p t a b l e a t G S F C f o r th e p r e p a r a tio n o f e n g in e e r in g d r a w in g s f o r f lig h t h a r d w a r e a n d g r o u n d s u p p o r t s ys te ms . T h e r e q u ir e me n ts s p e c if ie d h e r e in a r e e s s e n tia l to th e s ta n d a r d iz a tio n o f p r a c tic e s a n d to a u n if o r m in te r p r e ta tio n o f d r a w in g s . A s ys te m, p a ylo a d , o r c o mp o n e n t a s s e mb ly s h a ll b e c o mp le te ly d e f in e d b y me a n s o f d r a w in g s , in c lu d in g lis ts , s c h e ma tic s , w ir in g d ia g r a ms , a n d s p e c if ic a tio n s , to e n s u r e th a t c o mp o n e n t s f a b r i c a t e d a r e i n a c c o r d a n c e w i t h t h e d e s i g n . T h e d o c u me n t a t i o n i n f o r ma t i o n s h a l l s e r v e a s a p e r ma n e n t r e c o r d . F l i g h t h a r d w a r e s h a l l b e f a b r i c a t e d i n a c c o r d a n c e w i t h t h e a p p r o v e d d e s i g n d o c u me n t s . T h e s e d o c u me n t s s h a l l r e f l e c t t h e c h a r a c t e r i s t i c s a n d a c c e p t a n c e c r i t e r i a f o r a l l ma t e r i a l s , c o mp o n e n t / p a r t s , s u b s y s t e ms , a n d t h e c o mp l e t e s y s t e m. T h e a c c e p t a n c e c r i t e r i a f o r p a r t s a n d ma t e r i a l s s h a l l b e s pe c i f i e d b y s t a n d a r d s p e c i f i c a t i o n s w h e n applicable. E n g in e e r in g d r a w in g s a r e d e f in e d a s th o s e d r a w in g s th a t c o mmu n ic a te th e r e q u ir e me n ts f o r th e ma n u f a c tu r e o f th e e n d - p r o d u c t ite ms , th e ir a s s e mb ly, a n d th e ir in s ta lla tio n in th e e n d p r o d u c t. T h e e n g in e e r in g d r a w in g s p r e p a r e d b y G S F C d e s ig n p e r s o n n e l o r c o n tr a c to r s o n G S F C d r a w in g f o r ma t u s in g G S F C d r a w in g n u mb e r s s h a ll b e k n o w n a s “ G o v e r n me n t D e s ig n A c tiv ity D r a w in g s . ” P a r ts ma d e to th e s e d r a w in g s typ ic a lly w o u ld b e ma n u f a c tu r e d th r o u g h th e F a b r ic a tio n E n g in e e r in g Br a n c h , E n g in e e r in g S e r v ic e s D iv is io n , G S F C. “ C o n t r a c t o r D e s i g n A c t i v i t y D ra w i n g s ” ” ” ” ( w h i c h a r e a c o mp a n y 's d r a w i n g s b e a r i n g t h e c o mp a n y n a me , a d d r e s s , f e d e r a l c o d e id e n tif ic a tio n , a n d d r a w in g n u mb e r ) s h o u ld b e u s e d w h e n t h e c o mp a n y i s d e s i g n i n g a n d d e l i v e r in g t h e f i n i s h e d p r o d u ct i n a c c o r d a n c e w i t h t h e t e r ms o f a N A S A c o n t r a c t . The Design Activity shall be defined as an activity having responsibility for the design o f a n i t e m o r s y s t e m. T h e a c t i v i t y ma y b e a g o v e r n me n t e n t i t y , a c o n t r a c t o r , a v e n d o r , o r a n o th e r o r g a n iz a tio n s u c h a s a u n iv e r s ity. A l t h o u g h g e n e r a l l y i n a c c o r d a n c e w i t h t h e D e p ar t me n t o f D e f e n s e a n d i n d u s t r y p r a c t i c e s a n d p r o c e d u r e s , th is d r a w in g s ta n d a r d s man u a l d o e s c o n ta in s p e c if ic d if f e r e n c e s a n d e x c e p t i o n s t o E n g in e e r in g D r a win g P r a c tic e s, MI L - S T D - 1 0 0 E . T h is ma n u a l, w h ile n o t in te n d e d a s a ma n u a l o f in s tr u c tio n in th e b a s ic p r in c ip le s o f d r a f tin g , d o e s s e t f o r th th e min i mu m r e q u i r e me n t s a c c e p t a b l e a t t h e G S F C. O n e o f t h o s e r e q u i r e me n t s i s t h a t p e r s o n s e n g a g e d in th e p r e p a r a tio n o f d r a w in g s s h a ll h a v e a th o r o u g h u n d e r s ta n d in g o f th e f u n d a me n ta ls o f d r a f tin g a n d g e o me tr ic a l d ime n s io n in g a n d to le r a n c in g ( in a c c o r d a n c e w i t h A N S I Y 1 4 . 5 M - 1 9 8 2 , D im e n s io n in g a n d T o le r a n c in g ) in o r d e r to p r o d u c e in te r p r e ta b le d r a w in g s .

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1.

DRAWING ELEMENTS

1.1.

Drawing Sizes

3

T h e f o llo w in g ta b le d e f in e s th e s ta n d a r d d r a w in g s iz e s , a n d th e ir le tte r d e s ig n a tio n s to b e u s e d a t G S F C: Letter Designation B C D E F J

Sheet Width (inches) 11 17 22 34 28 34

Sheet Length (inches) 17 22 34 44 40 48 to 144(a)

Margin (inches) 3/8 1/2 1/2 1/2 1/2 1/2(b)

Notes: ( a ) L e n g th s f o r “ J ” r o l l s i z e t o b e i n l l - i n c h i n c r e me n t s . ( b ) N o t in c lu s iv e o f a d d e d p r o te c tiv e ma r g in s o f a t le a s t 2 in c h e s o n b o th e n d s o f roll size drawings.

1.2.

Multisheet Drawings M u l t i s h e e t d r a w i n g s a r e p e r mi t t e d i n a l l s i z e s . a . T h e f i r s t s h e e t o f a mu l t i s h e e t d r a w i n g s h a l l a l w a y s c o n ta i n t h e c o mp l e t e T i t l e b lo c k , L is t o f Ma te r ia l, Re v is io n Blo c k , a n d g e n e r a l n o te s . b . A l l s h e e t s o f mu l t i s h e e t d r a w i n g s s h a l l b e o f t h e s a me l e t t e r s i z e . U s e o f mu l t i s h e e t d r a w i n g s s h a l l b e f o u n d t o b e a d v a n t a g e o u s f o r c e r t a i n t y p e s o f s c h e ma tic s a n d d ia g r a ms . c.

T h e s h e e ts o f “ J ” s iz e d r a w in g s ma y b e a n y o f th e a b o v e - n o te d le n g th s a n d ma y b e in te r mix e d in d if f e r e n t le n g th s .

d . S h e e t n u mb e r in g f o r a ll f ir s t s h e e ts s h a ll in c lu d e th e to ta l n u mb e r o f s h e e ts , a s “ S H E E T 1 O F 1 , ” “ S H E E T 1 O F 2 , ” e tc . N u mb e r i n g o f c o n t i n u a t i o n s h e e t s s h a l l b e l i mi t e d t o s t a t i n g t h e s p e c i f i c s h e e t n u mb e r ( e . g . , “ S H E E T 2 , ” “ S H E E T 3 ” ) w i t h o u t s p e c i f y i n g t h e t o t a l n u mb e r o f s h e e t s .

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1.3.

Zoning V e r tic a l a n d h o r iz o n ta l z o n in g ma y b e u s e d if n e c e s s a r y to p r o v id e o r ie n ta tio n to t h e f i e l d o f d r a w i n g s . Z o n in g i s ma n d a t o r y f o r mu l t i s h e e t d r a w i n g s “ D ” s i z e a n d l a r g e r a n d s i n g l e - s h e e t d r a w i n g s “ E ” s i z e an d l a r g e r . Z o n e s s h a l l b e i d e n t i f i e d b y a l p h a b e t i c a l ( u p p e r c a s e ) a n d n u me r i c a l e n t r i e s i n t h e mar g i n s p a c e s a s i n d i c a t e d in F ig u r e 1 . Z o n e s iz e s s h a ll b e 8 ½ in c h e s ( w id th ) b y 1 1 in c h e s ( le n g th ) f o r “ E ” and “J” size, 7 inches (width) by 10 inches (length) for “F” size, and 5½ inches (width) by 8½ inches (length) for “D” size. SECURITY CLASSIFICATION 5

3

4

2

1

D

C

VERTICAL ZONE IDENTIFICATION ALPHABETICALLY LETTERED FROM BOTTOM EDGE

D

ALTERNATE LOCATION OF GENERAL NOTES

C

B

B

DRAWING NUMBER ON REVERSE SIDE FOR ROLL-SIZE DRAWINGS

PREFERRED LOCATION OF GENERAL NOTES

APPROX. 2-INCH ADDITIONAL MARGIN FOR PROTECTION OF ROLL-SIZE DRAWINGS

HORIZONTAL ZONE IDENTIFICATION NUMBERED FROM RIGHT-HAND EDGE

APPROX. 2-INCH ADDITIONAL MARGIN FOR PROTECTION OF ROLL-SIZE DRAWINGS

DRAWING NUMBER ON REVERSE SIDE FOR ROLL-SIZE DRAWINGS

REVISION NOTES

SECURITY NOTATION (IF REQUIRED) A

TITLE BLOCK 5

4

3

2

A

1

SECURITY CLASSIFICATION

Figure 1: Format for B, C, D, E, F, and J Size Drawings

1.4.

Title Block and Revision Block T i t l e b lo c k s a n d r e v is i o n b lo c k s s h a l l b e p r e p a r e d a n d c o mp l e t e d a s f o l l o w s : T h e T i t l e b lo c k o f s i n g le - s h e e t d r a w i n g s , f i r s t s h e e t s o f mu l t i s h e e t d r a w i n g s , a n d r e v is io n b lo c k s s h a ll a p p e a r a s s h o w n in e ith e r F ig u r e 2 a o n p a g e 5 ( d ime n s io n a l s y s t e m/ i n c h e s ) o r F i g u r e 2 b o n p a g e 6 ( d i me n s i o n a l s y s t e m/ mi l l i me t e r s ) . T h e i n f o r ma t i o n r e q u ir e d i n t h e T i t l e b lo c k s h a l l b e a s s p e c i f i e d o r r e f e r e n c e d b y i t e ms 1 t h r o u g h 2 8 , b e l o w . T h e T i t l e b lo c k o f c o n t i n u a t i o n s h e e t s f o r mu l t i s h e e t d r a w in g s s h a ll c o n ta in in f o r ma tio n lis te d in ite ms 1 , 2 , a n d 4 th r o u g h 1 1 .

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DESCRIPTION

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MATERIAL SPEC & NO.

LIST OF MATERIAL

UNLESS OTHERWISE SPECIFIED - DIMENSIONS ARE IN INCHES

NATIONAL AERONAUTICS AND

TOLERANCES: .XX ±.02

±.005

Goddard Space Flight Center

SPACE ADMINISTRATION

.XXX

FRACTIONS ±1°

125

NAME

±1/16

INIT

GREENBELT, MARYLAND

DATE DRAWING INTERPRETED PER GSFC-X673-64-1

DESIGNER REMOVE ALL BURRS AND SHARP EDGES R .010 OR CHAMFER MAX.

FLIGHT HARDWARE/POST FAB HARDNESS TEST REQ'D HARDNESS TEST NOT REQUIRED

16

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TITLE

NON FLIGHT

TEST HARDNESS PER ASTM E-18, LOCATION OPTIONAL

CHECKED

TEST HARDNESS PER ASTM E-18 WHERE INDICATED APPROVED

ON FIELD OF DRAWING THUS NO NON-DESTRUCTIVE EXAMINATION (NDE) REQ'D

APPROVED

NDE REQUIRED PER S-313-009 CODE APPROVED-STRESS

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VERSION:

REV

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FILE NAME:

USED ON

CODE

SCALE

WT.

SH

FOLD LINE

Figure 2a: Sample “Title and Revision Block” (Enlarged View) for Dimensional System/Inches

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REVISION DESCRIPTION

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26

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DESCRIPTION

NO

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MATERIAL SPEC & NO

LIST OF MATERIAL FLIGHT HARDWARE/POST FAB HARDNESS TEST REQ'D

METRIC

NATIONAL AERONAUTICS AND SPACE ADMINISTRATION

NAME

TEST HARDNESS PER ASTM E-18, LOCATION OPTIONAL

HYBRID

Goddard Space Flight Center INIT

DATE DRAWING INTERPRETED PER GSFC-X673-64-1

TEST HARDNESS PER ASTM E-18 WHERE INDICATED

METRIC/INCH

GREENBELT, MARYLAND

NON FLIGHT

HARDNESS TEST NOT REQUIRED

DESIGNER

ON FIELD OF DRAWING THUS THIRD ANGLE PROJECTION

NON-DESTRUCTIVE EXAMINATION (NDE) NOT REQD

DRAWN

TITLE

NDE REQUIRED PER S-313-009 CODE CHECKED

UNLESS OTHERWISE SPECIFIED DIMENSION ARE IN MM

THIS DRAWING WAS PRODUCED USING SOFTWARE:

DIMENSION TOLERANCES

3.2

2 DECIMAL

±0.25

1 DECIMAL

MECHANICAL ENGINEER

VERSION:

FILE NAME: SYSTEMS ENGINEER

±0.5

FINISH

DECIMAL

±1

IN

ANGLE

±1°

MICRO-

RAD/CHAM

±0.5

METERS

REV

ELECTRICAL ENGINEER

GD STRESS ENGINEER

REMOVE ALL BURRS AND SHARP

NEXT ASSY

USED ON

CODE

SCALE

WT

SH

LINE

FOLD

EDGES R 0.25 OR CHAMFER MAX

Figure 2b: Sample “Title and Revision Block” (Enlarged View) for Dimensional System/Millimeters

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DRAWING NO.: See page 60.

2

“SH OF on sheet 1.

3

W T : E n te r u n it w e ig h t c a lc u la te d a t time o f d e s ig n if r e q u ir e d .

4

T I T L E : S e e p a r a g r a p h 2 . 1 o n p a g e 1 1 f o r s e le c tio n a n d a r r a n g e me n t o f drawing title. See paragraph 3.3.2 on page 32 for drawing title size.

5

S C A L E : E n te r s c a le . S e e p a r a g r a p h 3 . 4 o n p a g e 3 2 f o r s e le c tio n o f s c a le .

6

CODE: For drawings prepared by the Goddard Space Flight Center (GSFC) w ith a n o f f ic ia l G S F C d r a w in g n u mb e r , e n te r th e th r e e - d ig it G S F C c o d e id e n tif yin g th e g r o u p r e s p o n s ib le f o r th e d r a w in g .

7

” : E n t e r s h e e t n u mb e r a s a p p l ic a b l e . I n d i c a t e t o t a l s h e e t s o n l y

F o r d r a w in g s p r e p a r e d b y a c o n tr a c to r w ith a c o n tr a c to r d r a w in g n u mb e r a n d f o r ma t, th e c o n tr a c to r 's c o d e n u mb e r f r o m th e Co mme r c ia l a n d G o v e r n me n t E n t i t y ( C A G E ) P u b l i c a t i o n H 4 / H 8 ( f o r me r l y F e d e r a l S u p p ly Co d e fo r M a n u fa c tu r e r s ( F S C M ) H 4 a n d F e d e r a l S u p p ly Co d e s fo r No n - M a n u fa c tu r e r s ( F S C N M) H 8 ) s h a l l a p p e a r . 7

DATE: Enter date of initials.

8

D E S I G N E R : E n t e r d e s i g n e r ' s p r i n t e d n a me a n d i n i t i a l s .

9

D R A W N : E n te r d r a f ts ma n 's p r in te d n a me o r if d r a w n b y th e d e s ig n e r , th e d e s ig n e r ’ s p r in te d n a me ma y b e r e p e a te d .

1 0 C H E C K E D : E n t e r d e s i g n a n a l y s t ' s p r i n t e d n a me . T h i s n a me s h a l l b e a n in d e p e n d e n t n a me f r o m a ll o th e r n a me s o n th e d r a w in g . I t r e p r e s e n ts th a t th e d r a w in g h a s b e e n c h e c k e d a g a in s t th e p a r a me te r s o f th is d r a w in g ma n u a l a n d , w h e r e p o s s i b le , t o f o r m, f i t , f u n c t i o n , a n d f e a s i b i l i t y . T h e c h e c k e r mu s t h a v e a th o r o u g h u n d e r s ta n d in g o f th e me th o d s a n d p r a c tic e s o f g e o me tr ic tolerancing and be able to specify such practices in accordance with ANSI S ta n d a r d Y 1 4 . 5 M- 1 9 8 2 , D im e n s io n in g a n d T o le r a n c in g . 1 1 A P P R O V E D : E n te r th e p r in te d n a me s o f G S F C p e r s o n n e l a s s ig n e d to a p p r o v e th e d r a w in g . P r o j e c t r e q u ir e me n ts f o r d r a w in g n a me s s h a ll v a r y f r o m p r o g r a m t o p r o g r a m, b u t e a c h n a me s h a l l b e i d e n t i f i e d . F o r e x a mp l e , a f t e r e a c h a p p r o v a l n a me , n o te th e f o llo w in g : “ E N G ” f o r e n g in e e r , “ S T RE S S ” f o r s tr e s s e n g in e e r , “ Q A ” f o r q u a l i t y a s s u r a n c e e n g in e e r , “ M A T L ” f o r ma t e r i a l s e n g i n e e r , “ E L E C ” f o r e l e c t r ic a l e n g i n e e r , e t c . A l l n a me s i n l i n e i t e ms 8 t h r o u g h 1 1 mu s t b e l e g i b l e . T h e h a n d -w r i t t e n i n i t i a l s o n t h e p a p e r o r i g i n a l a r e t h e o f f i c i a l a p p r o v a l o f t h a t d o c u me n t . 1 2 U S E D O N : E n te r a c r o n ym n a me o f p r o g r a m a n d a c r o n ym n a me o f s u b s ys te m o r e x p e r ime n t w h e r e a p p lic a b le .

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1 3 N E X T A S S Y : E n t e r d r a w i n g n u mb e r o n w h i c h t h e p a r t i s n e x t u t i l i z e d , mo d if ie d , o r a s s e mb le d . I n th e c a s e o f to o lin g d r a w in g s , in th e N e x t A s s e mb ly b lo c k r e f e r to a g e n e r a l n o te th a t s ta te s “ T h is d r a w in g is u s e d to f a b r ic a te ( d r a w in g n u mb e r ) . ” I n s ta lla tio n d r a w in g s s h o u ld r e f le c t a to p c o n f ig u r a tio n d r a w in g n u mb e r a s th e n e x t a s s e mb ly. W h e n a c o n f ig u r a tio n d r a w in g is n o t b e in g p r o d u c e d , th e in s ta lla tio n d r a w in g s h a ll in d ic a te b y n o te “ T h e in s ta lla tio n f o r ms a p a r t o f th e c o n f ig u r a tio n f o r p r o g r a m ( p r o j e c t n a me ) . ” 1 4 E X A MI N A T I O N : T h e a p p r o p r i a t e “ N o n - D e s t r u c t i v e E x a mi n a t i o n ( N D E ) Re q u ir e d ” b lo c k s h a ll b e c h e c k e d o f f , an d th e a d d itio n o f th e a p p lic a b le c o d e o r “ s e e n o te X X ” s h a ll b e a d d e d w h e r e r e q u ir e d . Re f e r to T e s tin g a n d I n s p e c tio n N o te s o f th e g e n e r a l n o te s s e c tio n p a r a g r a p h 2 . 4 . 4 . 6 o n p a g e 2 0 . 1 5 F L I G H T H A R D W A R E a n d H A R D N E S S T E S T I N G : T h e F lig h t H a r d w a r e b lo c k mu s t b e c h e c k e d o f f w h e n th e p a r t is u s e d in a c tu a l f lig h t c o n f ig u r a tio n s . T h e a p p r o p r ia te H a r d n e s s T e s tin g b lo c k s h a ll b e c h e c k e d o f f r e g a r d l e s s o f w h e t h e r th e p a r t is f lig h t h a r d w a r e o r n o t. 1 6 O n CA D - p r o d u c e d d r a w in g s , a d d a 3 . 5 - in c h - lo n g b y 0 . 8 8 - in c h - h ig h b lo c k a s follows:

THIS DRAWING WAS PRODUCED USING: SO F T W A R E: (a)

VER SIO N : (b)

F IL EN A M E: (c) Notes: ( a ) S o f t w a r e u s e d ( e x a mp l e : “ A U T O C A D ” ) ( b ) V e r s i o n o f s o f t w ar e ( e x a mp le : “ 1 0 c 7 ” ) ( c ) F ile n a me ( e x a mp le : “ G S F C1 2 3 4 ” ) 1 7 ME T R I C / H Y B R I D ME T R I C - I N C H : A d d “ X ” t o t yp e o f d r a w i n g b l o c k . A A A A 1 8 I T E M N O . : E n te r ite m n u mb e r s w h e n mo r e th a n o n e typ e o f ma te r ia l o r p a r t is r e q u ir e d , a n d c o o r d in a te d r a w in g c a llo u ts o n th e d r a w in g f ie ld . P a r ts ma d e o f th e s a me ma te r ia l, c o n d itio n , a n d s p e c if ic a tio n s h a ll b e a s s ig n e d o n ly o n e ite m n u mb e r , e v e n th o u g h th e p a r t ma y b e r e q u ir e d in v a r io u s s iz e s a n d t h i c k n e s s e s . T h e q u a n t i t y f o r s u c h i t e ms i n t h e L i s t o f M a t e r i a l ( L / M ) s h a l l b e s t a t e d a s “ A / R ” w i t h t h e s p e c i f i c s i z e s s pe lle d o u t in th e f ie ld o f th e d r a w in g . Re f e r to F ig u r e 3 o n p a g e 1 0 , F ig u r e 3 4 o n p a g e 8 0 , a n d S e c tio n 8 . 6 , F in d o r I te m N u mb e r S ys te m o f I d e n tif ic a tio n , o n p a g e 7 9 . D o n o t s k ip ite m n u mb e r s o n n e w d r a w in g s . 1 9 R E Q D : E n t e r q u a n t i t y o f p a r t s r e q u ir e d o n ly f o r t h e p a r t s o f a n i n s e p a r a b le a s s e mb ly o r a s s e mb ly d r a w in g . 20

P A R T N O . : E n te r id e n tif yin g p a r t n u mb e r s w h e n r e q u ir e d ( G o v e r n me n t, c o n tr a c to r , v e n d o r , o r o th e r ) . O n n e w d r a w in g s , g r o u p lik e ite ms to g e th e r .

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21

D E S C R I P T I O N : E n t e r ma t e r i a l d e s c r i p t i o n ( p l a t e , e t c . ) o r a p a r t n a me t i t l e i f it is a n o th e r d r a w in g . E n c lo s e r e f e r e n c e i n f o r ma t i o n s u c h a s f a s t e n e r s i z e s i n brackets.

22

M A T E R I A L : E n t e r t h e ma t e r i a l f r o m w h i c h t h e p a r t i s f a b r i c a t e d . E x a mp le s : “AL ALY”; “CRES”; “BE CU.”

2 3 M A T E R I A L S P E C . : E n t e r t h e a p p l i c a b l e ma t e r i a l s p e c i f i c a t i o n s , n u mb e r , a n d f in a l c o n d itio n . E x a mp le s : “ Q Q - A - 2 5 0 /1 1 6 0 6 1 - T 6 ” f o r A L A L Y p la te ; “ASTM A582 303 COND A” for CRES bar. T h e in f o r ma tio n r e q u ir e d in th e r e v is io n b lo c k s h a ll b e a s s p e c if ie d o r r e f e r e n c e d b y i t e ms 2 4 t h r o u g h 2 8 , b el o w , a n d i n a c c o r d a n c e w i t h “ D r a w i n g Re v is io n s , ” p a r a g r a p h 7 , p a g e 6 8 . 2 4 R E V I S I O N S - S Y M: E n te r r e v is io n s ymb o l. 25 REVISIONS - ZONE: Enter zone (where used). 2 6 R E V I S I O N S - D E S C R I P T I O N : E n te r d e s c r ip tio n o f th e r e v is io n ( r e f e r to S e c tio n 7 , “ D r a w in g Re v is io n s ” ) . 2 7 R E V I S I O N S - D A T E : E n te r d a te a p p r o v e d b y a u th o r iz e d s ig n e r ( s ) in b lo c k . 2 8 R E V I S I O N S - A P P R O V A L : E n te r s ig n a tu r e o f G S F C p e r s o n a s s ig n e d to a p p r o v e . I f c h a n g e w a s b y a p p r o v e d E O , d r a w in g o n ly n e e d s a p p r o v a l o f th e d r a f ts ma n o r p e r s o n in c o r p o r a tin g th e c h a n g e , a n d th e c h e c k e r . I f c h a n g e s ma d e a r e n o t c o v e r e d b y a n E O , th e n a p p r o v a l mu s t in c lu d e th e e n g in e e r .

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DETAIL DRAWING WIRE ITEM NO.

REQD

BE CU DESCRIPTION

PART NO.

MATERIAL

QQ-C-530, COND 1/2 HT MATERIAL SPEC & NO.

DETAIL SHOWN & OPPOSITE DRAWING

ITEM NO.

REQD

-2

BAR OPPOSITE

AL ALY

QQ-A-225/8 6061-T6

-1

BAR SHOWN

AL ALY

QQ-A-225/8 6061-T6

PART NO.

DESCRIPTION

MATERIAL

MATERIAL SPEC & NO.

INSEPARABLE ASSEMBLY DRAWING 2

2

1

1

ITEM NO.

MS21209C0415

INSERT (4-40 UNC x .168 LG) PLATE

REQD

PART NO.

SEE NOTE 1 AL ALY

DESCRIPTION

MATERIAL

QQ-A-250/11 6061-T6 MATERIAL SPEC & NO.

INSEPARABLE ASSEMBLY DRAWING 2

3

1

A/R

MS21209C0415

PLATE GD1000001

ITEM NO.

REQD

INSERT (4-40 UNC x .168 LG)

SEE NOTE 1 AL ALY

QQ-A-250/11 6061-T6

PLATE ASSY

PART NO.

DESCRIPTION

MATERIAL

MATERIAL SPEC & NO.

ASSEMBLY DRAWING 4

3

3

MS51957-12

SCREW (4-40 UNC 2A x .187 LENGTH)

3

2

2

GD1003451

BLOCK

2

1

GC1003467-2

PLATE

GC1003467-1

PLATE

1

1

ITEM NO.

REQD REQD

GE1002500-2

PADDLE ASSEMBLY OPPOSITE

GE1002500-1

PADDLE ASSEMBLY SHOWN DESCRIPTION

PART NO.

CRES

MATERIAL

MATERIAL SPEC & NO.

Notes: (a) Paint, adhesives, and protective coatings shall appear in note form. (b) Hardware shall appear in List of Material with required quantity. (c) “A/R” shall be used in REQD column when same material (same material specification and condition) appears more than once in different sizes in the field of the drawing. (d) “A/R” may be used to indicate large quantities of rivets. (e) A material specification shall only appear once in the List of Material unless material conditions vary or a Shown and Opposite part is required. Sheet and plate shall not be listed as separate items. Figure 3: Examples of “List of Material”

1.5.

Drawing Format T h e d r a w in g f o r ma t f o r th e d r a w in g s iz e s lis te d o n p a g e 3 , in c lu d in g z o n in g , d r a w in g n u mb e r s , s e c u r ity c la s s if ic a tio n , e tc . , is s h o w n in F ig u r e 1 , p a g e 4 .

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2.

NOMENCLATURE

2.1.

Drawing Title

11

G e n e r a l i n f o r ma t i o n f o r t h e s e l e c t i o n o r d e v e l o p me n t o f a d r a w i n g t i t l e i s a s follows: a.

The title should be as brief as possible but should contain sufficient in f o r ma tio n to c a te g o r iz e th e p a r t p r o p e r ly a n d to d is tin g u is h it f r o m o th e r s i mi l a r p a r t s .

b. The drawing title shall consist of the following: 1 . I d e n tif yin g n o u n o r n o u n p h r a s e . 2 . T h e mo s t s ig n if ic a n t mo d if ie r o r mo d if yin g p h r a s e . 3 . T h e n e x t mo s t s ig n if ic a n t mo d if ie r o r mo d if yin g p h r a s e . T h e n o u n o r n o u n p h r a s e e s ta b lis h e s a b a s ic c o n c e p t o f a n ite m. T h e mo d i f i e r s s e r v e t o n a r r o w t h e a r e a o f c o n c e p t e s ta b lis h e d b y th e b a s ic n a me . A mo d if ie r is s e p a r a te d f r o m th e n o u n o r n o u n p h r a s e b y a c o mma a n d f r o m a n y p r e c e d i n g mo d i f i e r b y a c o mma . T h e t y p e d e s i g n a t o r a n d / o r a n y a d d itio n a l mo d if ie r s r e q u ir e d to f u r th e r id e n tif y a n ite m a r e s e p a r a te d f r o m the first part of the title by a dash. Where applicable, the word “ASSEMBLY” s h a ll b e u s e d a s th e la s t w o r d o f th e n o u n p h r a s e . EXAMPLES: “ B e a m, H o i s t i n g , G u i d e d M i s s i l e ” “ C o v e r , P r o t e c t i v e , R o c k e t M o t o r—Fo r w a r d S e c t i o n ” “ Ca b in e t, E le c tr ic a l E q u ip me n t—CY - 1 4 7 ” “ T r a n s p o r t a t i o n—Do l l y A s s e mb l y , E a r t h S a t e l l i t e ” c.

T h e n o u n , o r n o u n p h r a s e , is n e v e r a b b r e v ia te d . A b b r e v ia tio n s a r e u s e d in th e mo d i f i e r s o n l y w h e n s p a c e i s l i mi t e d . W h e n u s e d , a b b r e v i a t i o n s s h a l l c o n f o r m to A b b r e v ia tio n s , p a r a g r a p h 2 . 2 o n p a g e 1 2 .

d . W h e n o n e d r a w in g s u p e r s e d e s a n o th e r , th e n e w d r a w in g , w h e n p r a c tic a l, h a s t h e s a me t i t l e . e . P a r e n th e s e s a r e n o t u s e d t o e n c l o s e a n y p o r t i o n o f t h e d r a w i n g t i t l e . f.

P r o g r a m n a me s ( o r a b b r e v ia tio n s ) s h o u ld b e a d d e d to th e “ U s e d O n ” b lo c k a n d n o t t h e T i t l e b lo c k ; e x c e p t i o n s a r e o n t h e f i n a l o r t o p a s s e mb l y d r a w i n g .

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2.2.

ENGINEERING DRAWING STANDARDS MANUAL

Abbreviations T h e p u r p o s e o f th is s e c tio n is to p r o v id e a lis t o f a u th o r iz e d a b b r e v ia tio n s f o r u s e o n d r a w in g s a n d a s s o c ia te d d o c u me n ts . W h e n u s e d , a b b r e v ia tio n s a n d a c r o n yms shall be in accordance with GSFC STD-256-WE-1 and MIL-STD-12 (in that order of precedence). a. Uppercase Gothic letters shall be used. b . A b b r e v ia tio n s f o r w o r d c o mb in a tio n s ( e . g . , MMC—Ma x imu m Ma te r ia l Co n d itio n ) s h a ll b e u s e d a s s u c h a n d s h a ll n o t b e s e p a r a te d f o r u s e s in g ly. S i n g l e a b b r e v i a t i o n s ma y b e c o mb i n e d w h e n n e c e s s a r y . c.

T h e s a me a b b r e v ia tio n s h a ll b e u s e d f o r a l l t e n s e s , t h e p o s s e s s i v e c a s e a n d t h e s in g u la r a n d p lu r a l f o r ms o f a g iv e n w o r d .

d . A b b r e v i a t i o n s s h o u l d b e u s e d o n l y t o s a v e s p a c e o r t i me , b u t n e v e r a t t h e e x p e n s e o f c la r ity. e . P e r i o d s s h a l l b e u s e d w i t h a b b r e v i a t i o n s t h a t s p e l l e n t i r e w o r d s t o p r o v id e c la r ity a n d to a v o id mis in te r p r e ta tio n . T h e f o l l o w i n g a b b r e v i a t i o n s a r e a c c e p t a b le t o u s e a n d a r e “ i n d u s t r y - r e l a t e d ” a s s o c ia tio n s n o t f o u n d in G S F C S T D - 2 5 6 - W E - 1 o r MI L - S T D - 1 2 .

A F BMA

A n ti- F r ic tio n Be a r in g Ma n u f a c tu r e r s A s s o c ia tio n , I n c . 1 1 0 1 Co n n e c tic u t A v e n u e , N W S u ite 7 0 0 W a s h in g to n , D C 2 0 0 3 6

AGMA

A me r i c a n G e a r M a n u f a c t u r e r s A s s o c i a t i o n , I n c . 1 5 0 0 K in g S tr e e t S u ite 2 0 1 A r lin g to n , V A 2 2 3 1 4

ANSI

A me r i c a n N a t i o n a l S t a n d a r d I n s t i t u t e 1 4 3 0 Br o a d w a y New York, NY 10018

ASME

A me r i c a n S o c i e t y o f M e c h a n i c a l E n g i n e e r s 3 4 5 E . 4 7 th S tr e e t New York, NY 10017

ASTM

A me r i c a n S o c i e t y f o r T e s tin g a n d Ma te r ia ls 1916 Race Street P h ila d e lp h ia , P A 1 9 1 0 3

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AWS

A me r i c a n W e l d i n g S o c i e t y , I n c . 5 5 0 N . W . L e d e u n e Ro a d P . O . Bo x 3 5 1 0 4 0 Mia mi, F L 3 3 1 3 5

IEEE

I n s t i t u t e o f E l e c t r i c a l an d E l e c t r o n i c E n g i n e e r s , I n c . 445 Hose Lane P . O . Bo x 1 3 3 1 P is c a ta w a y, N J 0 8 8 5 5 - 1 3 3 1

ISO

I n te r n a tio n a l O r g a n iz a tio n f o r S ta n d a r d iz a tio n / ( O r g a n i s a t i o n I n t e r n a t i o n a l e d e N o r ma l i s a t i o n ) 1 , r u e d e V a r e mb é 1211 Geneve 20 S w i t z e r l a n d /S u i s s e

NEMA

National Electrical Manufacturers Association 2 1 0 1 L S tr e e t, N W W a s h in g to n , D C 2 0 0 3 7

NSA

N a tio n a l S ta n d a r d s A s s o c ia tio n , I n c . 1 2 0 0 Q u in c e O r c h a r d Blv d G a ith e r s b u r g , MD 2 0 8 7 8

NAS

A e r o s p a c e I n d u s t r i e s A s s o c i a t i o n o f A me r i c a , I n c . 1 2 5 0 I S tr e e t, N W W a s h in g to n , D C 2 0 0 0 5

SAE

S o c i e t y o f A u t o mo t i v e E n g i n e e r s , I n c . 4 0 0 Co mmo n w e a lth D r iv e W a r r e n d a le , P A 1 5 0 9 6

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2.3.

ENGINEERING DRAWING STANDARDS MANUAL

List of Material 2.3.1.

Requirements on the Body of the Drawing E a c h p a r t l i s t e d i n t h e L i s t o f M a t e r i a l ( P a r t s L i s t ) mu s t b e id e n tif ie d a t le a s t o n c e b y a n I te m ( F in d ) N u mb e r o n th e b o d y o f th e d r a w in g ( e x c e p t s in g le ite m d r a w in g s a n d s h o w n a n d o p p o s ite ite m d r a w in g s ) . Note: P a r t s s h a l l b e b r a c k e t e d , i n d i c at i n g r e f e r e n c e , w h e n t h e y a r e id e n tif ie d b y n u mb e r a n d a r e n o t n o te d in th e L is t o f Ma te r ia l. S u c h p a r ts a r e s h o w n in p h a n to m. Re p e a te d ite m n u mb e r s s h a ll b e indicated as reference either within brackets or by the word “REF.”

2.3.2.

Requirements in the List of Material a . T h e L i s t o f M a t e r i a l i s a l i s t o f a l l p a r t s a n d ma t e r i a l s c a l l e d o u t o n th e d r a w in g . S e e F ig u r e 3 o n p a g e 1 0 . b . T h e q u a n t i t y o f p a r t s n o te d i n t h e L i s t o f M a t e r i a l i s t h e n u mb e r r e q u ir e d t o c o mp l e t e t h e n o te d a s s e mb l y . c.

W h e n a n e w d r a w in g is ma d e , a ll p a r ts in th e L is t o f Ma te r ia l s h o u ld b e g r o u p e d a s to typ e , s u c h a s d a s h n u mb e r ( f o r s h o w n a n d o p p o s ite a s s e mb lie s ) , G S F C d r a w in g s ( f o r d e ta ile d p a r ts ) , MS p a r ts , N A S p a r ts , e tc . , a n d lis te d in th is s e q u e n c e .

d . Q u a n t i t i e s o f B u l k I t e ms a n d p l a c e me n t : r e f e r t o n o t e s ( a ) th r o u g h ( e ) o n F ig u r e 3 o n p a g e 1 0 . e.

P r e f e r r e d p a r ts lis ts f o r p a r ts , ma te r ia ls , a n d p r o c e s s e s c a n b e f o u n d in a n u n o f f ic ia l p u b lic a tio n a v a ila b le f o r v ie w in g in th e Mechanical Engineering Branch. The “Design Selection Guide” c o n ta in s a w id e r a n g e o f h a r d w a r e , ma te r ia ls , d e s ig n s ta n d a r d s , a n d p r o c e s s e s . I t s h a l l b e n o te d t h a t n o t a l l o f t h e i t e ms i n t h i s reference guide are rated for space flight use. Note: A ll f a s te n e r s u s e d in f lig h t h a r d w a r e a n d c r itic a l n u ts a n d b o lts u s e d o n g r o u n d s u p p o r t e q u ip me n t, in c lu d in g a ll f lig h t/G S E i n t e r f a c e s , mu s t me e t t h e s p e c i f i c a t i o n G S F C F a s t e n e r I n t e g r i t y R e q u ir e m e n ts, G S F C S - 3 1 3 - 1 0 0 , Ma te r ia ls Br a n c h , O f f ic e o f F lig h t A s s u r a n c e .

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2.4.

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Notes on Drawings I n f o r ma tio n o th e r th a n p ic to r ia l v ie w s a n d d ime n s io n s n e c e s s a r y f o r c o mp le tin g a d r a w i n g i s c l a s s i f i e d a s “ n o t e s . ” T h e tw o typ e s o f n o te f o r ms a r e G e n e r a l N o te s a n d L o c a l C h a r a c t e r N o t e s . N o t es o n a d r a w i n g t a k e p r e c e d e n c e o v e r s p e c if ic a tio n r e q u ir e me n ts ; h e n c e , n o te s c o n f lic tin g w ith r e f e r e n c e d specifications shall not be placed on a drawing unless they are necessary for d e v ia tio n s f r o m c e r ta in p r o v is io n s o f th e s p e c if ic a tio n .

2.4.1.

Security Classification The security classification “Top Secret,” “Secret,” or “ Co n f id e n tia l” s h a ll b e lo c a te d o n th e d r a w in g a s n o te d in F ig u r e 1 on page 4. E a c h s h e e t o f a mu l t i s h e e t d r a w i n g s h a l l b e i n d iv id u a l l y c l a s s i f i e d a s t o i t s c o n t e n t s . T h e s e c u r i t y s t a mp o n e a c h s h e e t s h a l l b e t h a t o f th e h ig h e s t c la s s if ic a tio n f o r a n y ite m s h o w n o n th a t in d iv id u a l s h e e t, n o t th e g e n e r a l o v e r a ll c la s s if ic a tio n o f th e e n tir e s e t o f d r a w in g s o r th e e n d ite m. O n r o ll- s iz e d r a w in g s , th e s e c u r ity c la s s if ic a tio n s h a ll b e s h o w n o n th e r e v e r s e s id e a t b o th e n d s o f th e d r a w in g s n e x t to th e d r a w in g n u mb e r to e n a b le th e c la s s if ic a tio n to be seen without unrolling the drawing. A w a r n i n g n o t e s h a l l b e i n c l u d ed a d j a c e n t t o t h e s e c u r i t y classification located above the Title block and shall read as follows: THIS MATERIAL CONTAINS INFORMATION AFFECTING THE NATIONAL DEFENSE OF THE UNITED STATES WITHIN THE MEANING OF THE ESPIONAGE LAWS, TITLE 18 U.S.C., SECTIONS 793 AND 794. THE TRANSMISSION OR REVELATION OF WHICH IN ANY MANNER TO AN UNAUTHORIZED PERSON IS PROHIBITED BY LAW.

2.4.2.

Note Location N o t e s o f g e n e r a l c h a r a c t e r t h a t d o n o t r e q u ir e le a d e r s to in d ic a te w h e r e th e y a p p ly, a n d f o r w h ic h p r o v is io n h a s n o t b e e n ma d e in th e s u p p le me n ta r y b lo c k s o f th e d r a w in g f o r ma t, s h a ll b e lo c a te d in th e f o llo w in g o r d e r o f p r e f e r e n c e : a.

Adjacent to the upper left border and to the left of all views.

b . I mme d ia te ly to th e le f t o f th e r e v is io n b lo c k . c.

A d j a c e n t t o t h e l o w e r l e f t b o rd e r o r b e l o w t h e r e v i s i o n b l o c k , space being left for extending the revision block downward. This location should be avoided whenever practical because the space required for revisions cannot be anticipated.

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2.4.3.

Numbering of Notes G e n e r a l n o te s a r e n u mb e r e d c o n s e c u tiv e ly d o w n w a r d . N o te n u mb e r s ma y b e id e n tif ie d o n th e f ie ld o f th e d r a w in g b y p la c in g th e n o te n u mb e r in a p e n n a n t- s h a p e d f la g a t th e g e n e r a l n o te lo c a tio n a n d in th e f ie ld o f th e d r a w in g , o r in th e L is t o f Ma te r ia l ( M a t e r i a l S p e c i f i c a t i o n c o l u mn ) , w h i c h e v e r l o c a t i o n i s mo r e a p p r o p r ia te .

2.4.4.

Note Examples T h e f o l l o w i n g n o t e s a r e l i s t e d a s r e p r e s e n t a t i v e e x a mp l e s a n d s h o u ld b e u s e d o n E n g in e e r in g D r a w in g s w h e n a p p lic a b le . S i g n if i c a n t i n f o r ma t i o n i s t o b e i n s e r t e d w h e r e b l a n k ( s ) a r e in d ic a te d a n d , f o r mo s t c a s e s , th e n o ta tio n s in p a r e n th e s e s a r e f o r in f o r ma tio n o n ly. ( W h e n n o t a p p lic a b le , d o n o t u s e in n o te ) . B e f o r e u s i n g t h e r e f e r e n c e d s p e c i f ic a t i o n s , c h e c k t h e D e p a r t me n t o f Defense Index of Specifications and Standards Publications to ensure that the specification has not been cancelled or superseded. U s e e i t h e r o f t h e f o l l o w i n g s t a t e me n t s a s ma i n h e a d i n g f o r n o t e s : “Except as noted” or “Unless otherwise specified.”

2.4.4.1.

Dimension Notes ALL DIMENSIONS APPLY AFTER SURFACE TREATMENT. DIMENSIONAL LIMITS AND SURFACE ROUGHNESS DESIGNATIONS APPLY (state “BEFORE” or “AFTER”) PLATING. (For other coatings, substitute the appropriate expression for “plating.”) DIMENSIONS TO APPLY AFTER STRESS RELIEF. DIMENSIONING AND TOLERANCING TO BE INTERPRETED IN ACCORDANCE WITH ANSI Y14.5M-1982. (Note need be added only when drawings are not in compliance with GSFC X-673-64-1F.) GEAR TOLERANCES TO BE IN ACCORDANCE WITH AGMA STANDARD QUALITY (insert number). DIMENSIONS ARE IN MILLIMETERS.

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TOOLING-CONTROLLED DIMENSION PER TEMPLATE (or “TOOL”) NUMBER GX XXXXXXX. THE ACTUAL TOLERANCES ON THE FEATURE'S LOCATIONS ARE CONTROLLED BY THE TEMPLATE. (Note to be flagged to toolingaffected dimensions and tolerances, which are then enclosed in parentheses to indicate a reference; template drawings shall carry a note stating the drawing number of the part they are used to fabricate.) TORQUE LIMITS FOR THREADED FASTENERS SHALL BE IN ACCORDANCE WITH PROJECT APPROVED SPECIFICATION NUMBER (OR ENGINEERING ANALYSIS).

2.4.4.2.

Heat Treating Notes Note for beryllium copper: HEAT TREAT IN ACCORDANCE WITH MIL-H-7199 TO ( Br i n e l l ) . Note for steel: HEAT TREAT IN ACCORDANCE WITH MIL-H-6875 TO XXX. (XXX = “Rockwell,” “Brinell,” or Vickers”).

N o te s f o r a lu min u m: HEAT TREAT IN ACCORDANCE WITH MIL-H-6088 TO ( Br i n e l l ) . CONDITION AFTER H EAT T R EAT T O (insert “BRAZING” or “WELDING”) IN ACCORDANCE WITH MIL-H-6088. AFTER WELDING, SOLUTION HEAT TREAT AND ARTIFICIALLY AGE TO T-6 CONDITION PER MIL-H-6088.

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2.4.4.3.

Joining Method Notes (welding, brazing, etc.) T h e f o llo w in g s p e c if ic a tio n s u p e r s e d e s MI L - W - 8 6 0 4 f o r A lu m. ; MI L - W - 8 6 1 1 A f o r S te e l, CRE S , a n d H T RE S A L Y ; a n d MI L - W - 1 8 3 2 6 f o r Ma g n e s iu m: FUSION WELD IN ACCORDANCE WITH CLASS MIL-STD-2219, PROCESS U SIN G F IL L ER M ET AL AND APPROPRIATE FLUX. (Joint dimension and design should be specified on the drawing.) ELECTRON BEAM WELDING IN ACCORDANCE WITH MIL-W-46132. SOLDER IN ACCORDANCE WITH NHB 5300.4(3A–1), USING SOLDER MATERIAL, QQ-S-571, TYPE . SOLDER IN ACCORDANCE WITH DOD-STD-1866 (GENERAL SOLDERING PROCESS FOR ALL TYPES AND MATERIALS FOR NONELECTRICAL APPLICATIONS). N o te f o r a lu min u m: DIP BRAZE IN ACCORDANCE WITH MIL-STD-645; CONDITION PER H EAT T R EAT T O MIL-H-6088. SILVER SOLDER IN ACCORDANCE WITH MIL-B-7883, TYPE G R AD E USING SOLDER MATERIAL QQ-B-654, CLASS . RIVET IN ACCORDANCE WITH MIL-STD-403.

2.4.4.4.

Plating and Coating Notes P l a t i n g n o t e s a r e g e n er a l l y n o t f o r s p a c e f l i g h t h a r d w a r e u s e i n r e s t r i c t e d a r e a s s u c h a s o p t i c s , e l e c t r o n i c s , e t c . , d u e to f la k in g . CADMIUM PLATE IN ACCORDANCE WITH QQ-P-416, CLASS . TYPE H A R D C H R O M E P L A T E ( s i z e ) —( s i z e ) T H I C K P E R , CLASS ; DIMENSIONS QQ-C-320, TYPE SHOWN APPLY AFTER PLATING. NICKEL PLATE IN ACCORDANCE WITH MIL-STD-171, . F I N I S H ( p a r a . n u m b e r ) , TYPE

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SILVER PLATE IN ACCORDANCE WITH QQ-S-365, , G R AD E . TYPE PAINT IN ACCORDANCE WITH MIL-STD-171, TABLE ; F IN ISH N O . COLOR IN ACCORDANCE WITH FED-STD-595 (color number). N o te s f o r a lu min u m: ANODIZE IN ACCORDANCE WITH MIL-A-8625, TYPE , CLASS COLOR (name of color only). IRIDITE IN ACCORDANCE WITH MIL-C-5541, . CLASS Note for CRES: PASSIVATE PER QQ-P-35, TYPE

.

OF MIL-STD-171. F IN ISH Use paragraph that applies to material being used. Note for iron and steel: APPLY PROTECTIVE PHOSPHATE COATING IN ACCORDANCE WITH MIL-C-12968, TYPE . ”if applicable.) (Add “CLASS

N o t e f o r t i t a n iu m: SURFACE FINISH TO BE IN ACCORDANCE WITH AMS 2488, TYPE .

2.4.4.5.

Surface Preparation Notes SURFACE TO BE CLEANED AND POLISHED FOR VACUUM USE. DO NOT USE ROUGE COMPOUNDS OR CHEMICALS DURING BUFFING OR POLISHING ON ITEMS REQUIRING TANK-TYPE LEAK TESTS. EXTERNAL SURFACE TO BE BUFFED TO . BEFORE ELECTROPOLISHING, MASK ALL SURFACES MARKED .

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VAPOR DEGREASING PER ASTM D4126, GENERAL SOLVENT GRADE 1,1,1 TRICHLOROETHANE.

2.4.4.6.

Testing and Inspection Notes THIS PART SHALL HAVE A LEAK RATE OF NOT MORE THAN (1 x 10-7 CC/SEC OF HELIUM) WHEN MEASURED BY A CALIBRATED MASS SPECTROMETER HAVING A SENSITIVITY OF (1 x 10-9 CC/SEC WITH GREATER THAN 90% HELIUM) AT A DIFFERENTIAL OF (ONE) ATMOSPHERE OR EQUIVALENT TEST. RADIOGRAPHIC INSPECTION OF ALL WELDS IN ACCORDANCE WITH MIL-STD-00453. ULTRASONIC INSPECTION PER MIL-STD-2154, TYPE (Insert “I” or “II”), CLASS . (I = Immersion Method, II = Contact Method.)

F o r G e n e r a l F r a c tu r e Co n tr o l P la n fo r P a y lo a d s U s in g th e S p a c e T r a n s p o r ta tio n S y s te m ( S T S ) , r e f e r to G S F C 7 3 1 - 0 0 0 5 - 8 3 . O n e o f th e f o llo w in g n o te s s h o u ld b e u s e d f o r p a r ts r e q u ir in g e tc h in g a n d /o r liq u id p e n e tr a n t in s p e c tio n : FRACTURE CRITICAL PART - ETCH AND PENETRANT INSPECT PER GSFC S-313-009, CODE XXXXX. (Usually used for machined parts.) FRACTURE CRITICAL PART - DO NOT ETCH PART. PENETRANT INSPECT PER GSFC S-313-009, CODE XXXXX. (Usually used for rolled parts.) I f a r e a s o f a p a r t a r e t o b e e t c he d a n d i n s p e c t e d p r i o r t o f i n i s h ma c h in in g , a s e p a r a te d r a w in g n o te s h o u ld c a ll o u t th is r e q u ir e me n t t o a v o i d c o s t l y mis t a k e s .

2.4.4.7.

Threaded Inserts — Cleaning and Installation Notes N o t e f o r a l u mi n u m a n d ma g n e t i c s u r f a c e s : CLEAN THREADED INSERTS WITH TRICHLOROETHANE AND BAKE OUT AT 100 DEGREES CELSIUS FOR 3 TO 4 HOURS PRIOR TO INSTALLATION. APPLY DRY FILM LUBRICANT GOVT. DESIGNATION M-6003, TYPE (insert “I” or “II”) PER MIL-L-46010 QPL (LIST). (Type I cure temp. = 150 degrees C.) (Type II cure temp. = 240 degrees C.)

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INSTALL THREADED INSERTS PER XXX. (XXX = “MS33537” for coil type, “MS51835” for Keen type, or “ M I L -I -4 5 9 3 2 / 1 ” f o r t h i n w a l l t y p e . ) INSTALL CLINCH NUTS PER MIL-N-45938/1. AFTER THE BONDING EPOXY IS CURED PER NOTE , AL L IT EM (insert number) THREADED INSERTS SHALL BE CAPABLE OF WITHSTANDING A CORRESPONDING TORQUE LOAD, AS LISTED IN TORQUE TABLE, WITHOUT BECOMING LOOSE. ALL THREADS ON THREADED FASTENERS SHALL BE FREE OF ADHESIVE AND FOREIGN MATERIAL. TORQUE TABLE THREAD SIZE TORQUE, IN-LBS 6-32 UNC x.x ... ... ... ...

TAP ALL HOLES PRIOR TO COATING; INSTALL THREADED INSERT AFTER COATING.

2.4.4.8.

Miscellaneous Notes PLACE IN BAG AFTER FINAL ELECTROPOLISHING. BAG SHALL CONFORM TO MIL-P-116, METHOD (see spec.). ALTERED PART SOURCE INFORMATION: PAR T N O .: VEN D O R : ADDRESS: MAINTAIN AS MATCHED SET AFTER MACHINING. Note for NON-flight parts ONLY: STEEL STAMP, ETCH, OR ENGRAVE (size) HIGH +.005 CHARACTER AS SHOWN, X .010 -.000 DEEP. THIS DRAWING TO BE INTERPRETED IN ACCORDANCE WITH GSFC X-673-64-1F. RUBBER STAMP (size) HIGH CHARACTER AS (insert “INK” or “PAINT”) IN SH O W N , U SIN G ACCORDANCE WITH (specification *). (* Include manufacturer's part number and address.)

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BAG PART PER MIL-P-116, METHOD TAG WITH PART NUMBER.”

, AND

ALTERED SURFACES TO HAVE . (Refer to paragraph 10.4.1, page 93, for symbol notation.) FINISH ALL OVER. (Refer to paragraph 10.4.1, page 93, for symbol notation.)

SURFACE ROUGHNESS AS XXX: MACHINED SURFACES . (where XXX is “ROLLED,” “EXTRUDED,” or “DRAWN”). (Refer to paragraph 10.4.1, page 93, for symbol notation.) IN SID E C O R N ER S R

MAXIMUM.

UNIT TO BE STRAIGHTENED AND STRESSRELIEVED AFTER WELDING. WELDED OR BRAZED FILLETS TO BE CONFINED TO INSIDE SURFACE. TWINE SHALL CONFORM TO THE REQUIREMENTS , CLASS . OF MIL-T-713, TYPE A MANUFACTURER'S CERTIFICATION OF MATERIAL SPECIFICATION COMPLIANCE MUST BE SUPPLIED W IT H PAR T (insert number). MAGNETIC SPECIFICATION--PERMEABILITY OF (specify units) . LESS THAN COMPONENTS MUST BE PACKAGED AND MARKED IN ACCORDANCE WITH APPLICABLE INTERSTATE COMMERCE COMMISSION (ICC) REGULATION 49-CFR71-78; SHIPMENT SHALL BE MADE DIRECTLY TO THE USING AGENCY. EXPLOSIVE (or other applicable wording) COMPONENTS ARE HAZARDOUS AND MUST BE HANDLED IN ACCORDANCE WITH APPLICABLE SAFETY REGULATION 49-CFR71-78.

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2.4.4.9.

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Informational Notes I n f o r ma tio n a l n o te s , s u c h a s th e f o llo w in g g o v e r n me n t r ig h ts to ma n u f a c t u r e n o t e , s h a l l a p p e a r a d j a c e n t t o t h e r i g h t b o r d e r a n d T i t l e b lo c k o f t h e d r a w i n g : THE XXXX COMPANY, CHICAGO, IL., PART NUMBER XXXX CORRESPONDS TO THE ITEM DEPICTED ON THIS DRAWING, WHICH IS FURNISHED FOR UNRESTRICTED USE IN CONNECTION WITH ANY U.S. GOVERNMENT MANUFACTURE OR PROCUREMENT. SUCH USE IS AUTHORIZED BY THE XXX COMPANY LETTER NO. AND DATED XXX SIGNED . NO OTHER USE IS AUTHORIZED.

2.4.5.

Local Character Notes N o t e s o f l o c a l c h a r a c t e r , s u c h a s d r i l l n o te s , t h r e a d n o te s , e t c . , t h a t r e q u i r e l e a d e r s t o i n d i c a t e t h e f e a tu r e s t o w h i c h t h e y a p p ly , s h a l l b e l o c a t e d i n t h e f i e l d o f t h e d ra w i n g i n p o s i t i o n s a d j a c e n t t o s u c h f e a t u r e s . E a c h n o t e s h a l l s t a t e t h e n u mb e r o f f e a tu r e s to w h ic h it applies unless a leader is drawn to each feature.

2.4.6.

General Dimensional Tolerance Notes T h e g e n e r a l to le r a n c e s e n te r e d in th e s u p p le me n ta r y p o r tio n o f th e T i t l e b lo c k s h a l l c o n tr o l a l l d ime n s i o n s a p p l i e d t o t h e d r a w i n g , e x c e p t t h o s e s p e c i f i c a l l y l a b e l e d “ M a x , ” “ M i n , ” “ R e f , ” “ D a t u m, ” o r “ Ba s ic , ” o r d ime n s io n s h a v in g to le r a n c e s a p p lie d d ir e c tly th e r e to , o r d ime n s io n s c o n tr o lle d b y n o te s o r d o c u me n ts in v o k e d o n th e d r a w in g . G e n e r a l to le r a n c e s ma y b e c h a n g e d to th e p r e v a le n t to le r a n c e s th a t a r e r e q u ir e d b y th e d r a w in g typ e . T h is is d o n e b y s tr ik in g th r o u g h th e to le r a n c e a n d in s e r tin g th e n e w to le r a n c e b e n e a th th e o ld . I n th e c a s e w h e r e me tr ic to le r a n c in g is r e q u ir e d , s e e S e c tio n 1 0 . 2 , s u b p a r a g r a p h i, f o r g e n e r a l to le r a n c e s .

2.5.

Specification Callouts N o r ma lly, o n ly th e b a s ic d o c u me n t n u mb e r o f a s p e c if ic a tio n s h o u ld b e s h o w n o n t h e d r a w i n g , i n w h i c h c a s e , t h e l a t e s t i s s u e i n e f f e c t a t t h e t i me o f i n v i t a t i o n t o b id s h a ll b e imp o s e d in a ll p r o c u r e me n t a c tio n s . Ch a n g e s to th e s p e c if ic a tio n o c c u r r in g s u b s e q u e n t to th e time o f in v ita tio n to b id s h a ll n o t b e imp o s e d in c u r r e n t p r o c u r e me n t a c tio n s u n le s s th e d r a w in g is r e v is e d to s h o w th e n e w is s u e b y b a s ic d o c u me n t n u mb e r , r e v is io n s , a me n d me n t, a n d /o r d a te a n d c u r r e n t p r o c u r e me n t a c tio n s a me n d e d to s p e c if y th e n e w d r a w in g r e v is io n o r E n g in e e r in g Order (EO).

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I f th e b a s ic d o c u me n t n u mb e r , r e v is io n , a me n d me n t, a n d /o r d a te o f a s p e c if ic a tio n a r e s h o w n o n a d r a w in g , o n ly th a t p a r tic u la r is s u e s h a ll b e imp o s e d in a ll p r o c u r e me n t a c tio n s . Ch a n g e s to th e s p e c if ic a tio n o c c u r r in g s u b s e q u e n t to th e time o f in v ita tio n to b id s h a ll n o t b e imp o s e d in e ith e r c u r r e n t o r f u tu r e p r o c u r e me n t a c tio n s u n le s s th e d r a w in g is r e v is e d to s h o w th e n e w is s u e b y b a s ic d o c u me n t n u mb e r , r e v is io n , a me n d me n t, a n d /o r d a te a n d c u r r e n t p r o c u r e me n t a c tio n s a me n d e d to s p e c if y th e n e w d r a w in g r e v is io n o r E O . Re g a r d le s s o f w h e th e r a s p e c if ic a tio n is s h o w n o n th e d r a w in g b y b a s ic d o c u me n t n u mb e r o n ly o r b y a p a r tic u la r is s u e , s u p e r s e d in g s p e c if ic a tio n s ( n e w n u mb e r ) s h a ll n o t b e imp o s e d in e ith e r c u r r e n t o r f u tu r e p r o c u r e me n t a c tio n s u n le s s th e d r a w in g is r e v is e d to s h o w th e n e w b a s ic d o c u me n t n u mb e r a n d , if a p p lic a b le , is s u e a n d c u r r e n t p r o c u r e me n t a c tio n s a me n d e d to s p e c if y th e n e w d r a w in g r e v is io n o r E O .

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3.

DRAFTING PRACTICES

3.1.

General

25

T h e s e d r a f t i n g p r a c t i c e s a r e t o b e e mp l o ye d in th e p r e p a r a tio n o f d r a w in g s b y G S F C p e r s o n n e l t o a c h i e v e c o mmo n a l i t y t h r o u g h o u t a n d r e s u l t i n l e g i b l e r e p r o d u c tio n s a t th e le a s t c o s t f r o m o r ig in a l d r a w in g s . D r a w in g s mu s t b e c o mp le te a n d u n a mb ig u o u s in in te r p r e ta tio n . Co mp le te d r a w in g s c o n ta in o r ma k e r e f e r e n c e to a ll d a ta n e c e s s a r y f o r f a b r ic a tin g a n d in s ta llin g th e p a r t a n d , w h e n a p p lic a b le , th e n e c e s s a r y te s t r e q u ir e me n ts , p r o c u r e me n t r e q u ir e me n ts , a n d s o u r c e . T h ir d - a n g le o r th o g r a p h ic p r o j e c tio n s h a ll b e u s e d f o r me c h a n ic a l e n g in e e r in g d r a w in g s . ( Ce r ta in d ia g r a ms , s c h e ma tic s , e tc . , a r e e x c e p te d . ) A lth o u g h o th e r typ e s o f p r o j e c tio n , s u c h a s is o me tr ic , p e r s p e c tiv e , e tc . , a r e n o t p r o h ib ite d , th e ir u s e mu s t b e c o n f i n e d t o a n a u x i l i a r y v ie w o n a d r a w i n g o f a c o mp l e x p a r t w h e n such a view shall aid in visualizing the part. D r a w in g s n e e d n o t h a v e th r e e v ie w s , ( i. e . , o n e o r tw o v ie w s a r e p e r mis s ib le f o r o b j e c ts th a t c a n b e c o mp le te ly d e f in e d ) . Co mp le me n ta r y n o te s o r d ime n s io n s a r e acceptable in place of the additional views. The rule shall be that only those v ie w s s h a ll b e d r a w n th a t a r e n e c e s s a r y to c o n v e y th e r e q u ir e d c h a r a c te r is tic s o f t h e p a r t . V i e w s , d ime n s i o n s , e t c . , s h a l l n o t e x t e n d i n t o t h e ma r g i n s o f t h e d r a w in g .

3.2.

Lines A c c e p t a b l e q u a l i t y o f r e p r o d u c t i o n s i s d e p en d e n t o n t h e d e n s i t y a n d u n i f o r mi t y o f lin e w o r k ( a n d le tte r in g ) . T yp e s o f lin e s d e s c r ib e d h e r e in a r e me r e ly lin e c o n v e n t i o n s , b u t i n e v e r y c a s e , e a c h t y p e o f l i ne s h a l l b e o p a q u e a n d o f u n i f o r m w i d t h a n d s h a ll b e u s e d o n a ll d r a w in g s o th e r tha n d i a g r a ms , s u c h a s s c h e ma t i c s , e t c .

3.2.1.

Ink Lines and Plotted Lines L in e s , w h e th e r h a n d - d r a w n o r p lo tte d , s h a ll b e o p a q u e a n d o f uniform width for each type of line. Two widths of lines, i.e., thin a n d th ic k , w ith th e ir w id th s in th e p r o p o r tio n s o f 1 :2 , s h a ll b e u s e d . The actual width of each type of line shall be governed by the size a n d s t y l e o f t h e d r a w i n g ; t h e r e l a t i v e w i d th s o f t h e l i n e s s h a l l a p p r o x ima te th o s e s h o w n in F ig u r e 4 o n p a g e 2 6 .

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Figure 4: Line Types and Conventions

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3.2.2.

27

Pencil Lines P e n c il lin e s s h a ll b e o p a q u e a n d o f u n if o r m w id th th r o u g h o u t th e ir le n g th . T h e lin e w id th s w h ic h a r e s p e c if ie d f o r in k lin e s d o n o t a p p ly to p e n c i l l i n e s . C u t t i n g a n d v ie w i n g p la n e l i n e s a r e t h e t h i c k e s t l i n e s on the drawing. However, the thick lines used for outlines and o th e r v is i b le l i n e s s h a l l b e s u f f i c i e n t l y p r o mi n e n t t o i mme d ia t e l y d if f e r e n tia te th e m f r o m lin e s u s e d f o r o th e r p u r p o s e s . H id d e n , s e c tio n in g , c e n te r , p h a n to m, e x te n s io n , d ime n s io n , a n d le a d e r lin e s s h a l l b e t h i n n e r t h a n o u t l i n e s . I n s e l e c t i n g t h e w i d th s o f p e n c i l lin e s , c o n s id e r a tio n s h a ll b e g iv e n to th e me d iu m o f r e p r o d u c tio n in v o lv e d to e n s u r e p r o p e r r e p r o d u ctio n a n d r e d u c tio n o f th e th in n e r lines.

3.2.3. 3.2.3.1.

Types of Lines Center Lines Ce n te r lin e s s h a ll b e c o mp o s e d o f lo n g a n d s h o r t d a s h e s , a lte r n a te ly and evenly spaced, with a long dash at each end. Center lines shall c r o s s w ith o u t v o id s . S e e F ig u r e 5 , b e lo w , a n d F ig u r e 6 , p a g e 2 8 .

Figure 5: Line Conventions

V e r y s h o r t c e n te r lin e s ma y b e u n b r o k e n if th e r e is n o c o n f u s io n w i t h o th e r l i n e s . C e n te r l i n e s s ha l l a l s o b e u s e d t o i n d i c a t e t h e tr a v e l o f a c e n te r . S e e F ig u r e 6 o n p a g e 2 8 .

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Figure 6: Alternate Position

3.2.3.2.

Dimension Lines D i me n s i o n l i n e s s h a l l t e r mi n a t e i n a r r o w h e a d s a t e a c h e n d . T h e y s h a l l b e u n b r o k e n e x c e p t w h e r e s p a c e i s r e q u i r e d f o r t h e d i me n s i o n . T h e p r o p e r me th o d o f s h o w in g d ime n s io n s a n d to le r a n c e s is e x p la in e d in S e c tio n 1 . 7 o f A N S I Y 1 4 . 5 M- 1 9 8 2 .

3.2.3.3.

Leaders L e a d e r s s h a ll b e u s e d to in d ic a te a p a r t o r p o r tio n to w h ic h a n u mb e r , n o te , o r o th e r r e f e r e n c e a p p lie s a n d s h a ll b e a n u n b r o k e n l i n e t e r mi n a t i n g i n a n a r r o w h e a d , d o t, o r w a v y l i n e . A r r o w h e a d s s h o u l d a l w a y s t e r mi n a t e a t a l i n e ; d o t s s h o u l d b e w i t h i n t h e o u t l i n e o f a n o b j e c t.

3.2.3.4.

Break Lines S h o r t b r e a k s s h a ll b e in d ic a te d b y s o lid f r e e h a n d lin e s . F o r lo n g b r e a k s , f u l l r u l e d l i n e s w i t h f r e e h an d z i g z a g s s h a l l b e u s e d . S h a f t s , r o d s , tu b e s , e tc . , w h ic h h a v e a p o r tio n o f th e ir le n g th b r o k e n o u t, s h a ll h a v e th e e n d s o f th e b r e a k d r a w n a s in d ic a te d in F ig u r e 7 o n page 29.

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Figure 7: Break Lines

3.2.3.5.

Phantom Lines Phantom lines shall be used to indicate the alternate position of parts of the item delineated, repeated detail, or the relative position o f a n a b s e n t p a r t a n d s h a ll b e c omp o s e d o f a lte r n a tin g o n e lo n g a n d two short dashes, evenly spaced, with a long dash at each end. See F ig u r e 5 o n p a g e 2 7 , F ig u r e 6 o n p a g e 2 8 , a n d F ig u r e 8 , b e lo w .

Figure 8: Repeated Detail

3.2.3.6.

Sectioning Lines Sectioning lines shall be used to indicate the exposed surfaces of a n o b j e c t i n a s e c t i o n a l v ie w . T h e y a r e g e n e r a l l y t h i n f u l l l i n e s , b u t ma y v a r y w ith th e k in d o f ma te r ia l s h o w n in s e c tio n .

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3.2.3.7.

Extension Lines E x t e n s i o n l i n e s a r e u s e d t o i n d i c a te t h e e x t e n s i o n o f a s u r f a c e o r t o p o in t t o a l o c a t i o n o u ts i d e t h e p a r t o u t l i n e . T h e y s t a r t w i t h a s h o r t , v is i b le g a p f r o m t h e o u t l i n e o f t h e p a r t a n d a r e u s u a l l y p e r p e n d ic u l a r t o t h e i r as s o c i a t e d d i me n s i o n l i n e s .

3.2.3.8.

Hidden Lines Hidden lines shall consist of short dashes, evenly spaced. These lin e s a r e u s e d to s h o w th e h id d e n f e a t u r e s o f a p a r t . T h e y s h a l l a l w a y s b e g in w i t h a d a s h i n c o n ta c t w i t h t h e l i n e f r o m w h i c h t h e y b e g in , e x c e p t w h e n s u c h a d a s h w o u ld f o r m a c o n tin u a tio n o f a f u ll l i n e . D a s h e s s h a l l t o u c h a t c o r ne r s , a n d a r c s s h a ll b e g in w ith d a s h e s o n th e ta n g e n t p o in ts . S e e F ig u r e 5 o n p a g e 2 7 a n d F ig u r e 8 on page 29.

3.2.3.9.

Stitch Lines S t i t c h l i n e s s h a l l b e u s e d t o i n d ic a t e t h e s t i t c h in g o r s e w i n g l i n e s o n a n a r tic le a n d s h a ll c o n s is t o f a s e r ie s o f v e r y s h o r t d a s h e s , a p p r o x ima te ly h a lf th e le n g th o f d a s h o r h id d e n lin e s , e v e n ly s p a c e d . L o n g l i n e s o f s t i t c h i n g ma y b e i n d i c a t e d b y a s e r i e s o f stitch lines connected by phantom lines.

3.2.3.10.

Outlines or Visible Lines T h e o u t l i n e o r v is i b le l i n e s h a l l b e u s e d f o r a l l l i n e s o n t h e d r a w i n g r e p r e s e n tin g v is ib le lin e s o n th e o b j e c t; s e e F ig u r e 5 o n p a g e 2 7 .

3.2.3.11.

Datum Lines D a tu m lin e s s h a ll b e u s e d to in d ic a te th e p o s itio n o f a d a tu m p la n e a n d s h a ll c o n s is t o f o n e lo n g d a s h a n d tw o s h o r t d a s h e s , e v e n ly spaced.

3.2.3.12.

Cutting-Plane/Viewing-Plane Lines The cutting-plane lines shall be used to indicate a plane or planes in w h ic h a s e c tio n is ta k e n . T h e v ie w in g - p la n e lin e s s h a ll b e u s e d to indicate the plane or planes from which a surface or surfaces are v i e w e d . O n s i mp l e v i e w s , t h e c u t t i n g p l a n e s s h a l l b e i n d i c a t e d a s s h o w n in F ig u r e 9 o n p a g e 3 1 . V ie w s h a ll b e s h o w n in b a c k o f th e cutting plane (3rd angle).

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Figure 9: Full Sectional View

O n c o mp l e x v i e w s , o r w h e n t h e c u ttin g p la n e s a r e b e n t o r o f f s e t, th e c u ttin g p la n e s s h a ll b e in d ic a te d a s s h o w n in F ig u r e 1 0 .

Figure 10: Offset Sections

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3.3.

ENGINEERING DRAWING STANDARDS MANUAL

Lettering and Numerals A ll le tte r in g s h a ll b e u p p e r c a s e ( c a p ita l le tte r s ) . N u mb e r s s h a ll b e A r a b ic n u me r a l s . T h e l e t t e r i n g a n d n u me r a l s s ha l l a l w y a s b e p l a c e d i n a h o r i z o n t a l reading position as far as practicable. Other than this, lettering shall be in a h o r iz o n ta l r e a d in g p o s itio n w h e n th e d r a w in g is r o ta te d 9 0 ° c lo c k w is e . L e g ib le le tte r in g is e s s e n tia l f o r r e p r o d u c tio n s . L e tte r s a n d /o r n u me r a ls s h a ll n o t r u n to g e th e r . W h e n t y p e w r i t t e n l e t t e r s o r d ig i t s a r e u s e d o n d r a w i n g s o r r e l a t e d d a t a , n o th in g s ma l l e r t h a n p ic a t y p e i s p e r mi t t e d .

3.3.1.

Style O t h e r t h a n b e i n g u p p e r c a s e R o man a n d p l a c e d i n a h o r i z o n t a l r e a d in g p o s itio n , th e le tte r in g is th a t o f th e in d iv id u a l's s tyle .

3.3.2.

Heights L e t t e r i n g h e i g h ts s h a l l b e a s f o l l o w s :

Drawing Feature: D r a w in g n u mb e r in id e n tif ic a tio n b lo c k s Drawing title and description of drawing type above L/M D r a w i n g s u b t i t l e , b o r d e r , l e t t e r s , a n d n u me r a l s S e c tio n , d e ta il, v ie w , a n d ta b u la tio n le tte r s D e s c r i p t i o n t i t l e s o f s e c t i o n , d e t a i l , v ie w , n o te s , a n d ta b u la tio n s D i me n s i o n s , t o l e r a n c e s , l i mi t s , n o te s , s u b t i t l e s , t a b le s , r e v is io n , a n d z o n e le tte r s o n th e f ie ld o f th e d r a w in g L is t o f ma te r ia ls in f o r ma tio n , n a me b lo c k s , u s e d o n , a n d next assy

Lettering h e ig h t in inches .25 .25 .19 .25 .19 .16 .14

Note: Use of fit text is not allowed.

3.4.

Scale D r a w in g s s h a ll b e ma d e to f u ll s c a le u n le s s t h e p a r t s ( o r a s s e mb l y) a r e t o o l a r g e t o p e r mi t i t o r s o s ma l l a n d c o mp l e x t h a t d r a w i n g t o a n e n l a r g e d s c a l e i s e s s e n t i a l f o r c l a r i t y . W h e n t h e ma i n v i e w s o f l a r ge p a r t s a r e d r a w n t o a r e d u c e d s c a l e , t h e d e ta il v ie w s “ ta k e n ” to c la r if y d e ta il s h o u ld b e ma d e to f u ll s c a le w h e n e v e r p o s s ib le . W h e n th e p a r t h a s b e e n d r a w n to a n e n l a r g e d s c a l e f o r c l a r i t y , i t i s n o t n e c e s s a r y t o ma k e a n a c t u a l - s i z e v i e w . a.

T h e s c a l e s p r e f e r r e d f o r e n g i n e e r i n g d r a w in g s a r e f u ll s iz e 1 /1 , r e d u c e d 1 /2 , 1 /4 , 1 /1 0 , 1 /2 0 , a n d e n la r g e d 2 /1 , 4 /1 , 1 0 /1 , 2 0 /1 . T h e c o mp u te r d a ta b a s e f o r t h e f o r ma t s i z e s h a l l b e 1 / 1 a t a l l t i me s .

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EXCEPTION: Ce r ta in d r a w in g s o r f ig u r e s , b y th e ir v e r y n a tu r e , c a n n o t b e d r a w n to a s p e c i f i c s c a l e ( f o r e x a mp l e , w i r i n g an d s c h e ma tic d ia g r a m d r a w in g s . ) T h e scale designation for these cases is “NONE.” See “b,” below. b . T h e s c a l e , a s n o t e d a b o v e , o r t h e w o r d “ N O N E ” mu s t b e e n t e r e d i n t h e T i t l e b lo c k . D o n o t u s e th e w o r d “ S I Z E ” f o llo w in g th e r a tio . T h e n o ta tio n s “ 1 /4 & N O T E D ” o r “ 1 /2 & N O T E D , ” e tc . , a p p ly to th o s e d r a w in g s o n w h ic h th e ma in v ie w s a r e t o a r e d u c e d s c a l e a n d a u x i l i a r y v ie w s a r e t o s o me o th e r s c a l e . c . T o ma i n t a i n c o n s i s t e n c y w i t h t i t l e b lo c k c a l l o u t f o r s c a l e , d e t a i l v ie w s s h a l l b e n o te d th u s :

DETAIL

-A

SCALE 1/1

Note: The scale of the view shall be stated only when it differs from that noted in t h e T i t l e b lo c k , w h i c h r e p r e s e n t s t h e ma j o r i t y o f v ie w s a n d s e c t i o n s . d . O r ig in a l p e n c il d r a w in g s s h o u ld b e to s c a le w ith in 0 . 0 3 in c h . W h e n c h a n g e s to an existing drawing take place, it is required to indicate that a particular f e a tu r e is n o t to s c a le b y u n d e r lin in g th e d ime n s io n s w ith a s tr a ig h t lin e . e.

3.5.

T h e g e o me tr y o f CA D - p r o d u c e d d r a w in g s s h a ll b e e n te r e d in to th e e le c tr o n ic d a ta b a s e a t o n e - to - o n e ( f u ll) s c a le .

Positioning the Part on the Drawing I n s ta lla tio n s s h a ll u s u a lly b e p o s itio n e d o n th e d r a w in g a s th e y w o u ld b e s e e n w h e n v ie w e d f r o m th e le f t s id e o r to p s id e o f th e e q u ip me n t w ith its f o r w a r d e n d p o in t i n g t o t h e l e f t . I f c la r ity c a n b e g r e a tly imp r o v e d b y a p o s itio n th a t r e s u lts in f e w e r h id d e n lin e s a n d f o r e s h o r te n e d p r o j e c tio n s , th e n th a t p o s itio n s h o u ld b e u s e d , a n d th e a b o v e r u le s h o u ld b e d is r e g a r d e d . S u c h in s ta n c e s w o u ld b e a d o o r o r d o o r j a mb w h ic h in s ta lls o n th e r ig h t s id e b e in g d r a w n w ith th e f o r w a r d p o r tio n to th e r ig h t, o r a n u mb e r o f ite ms in s ta lle d o n th e f o r w a r d s id e o f a p a n e l b e in g d r a w n lo o k in g a t the forward side. P a r ts a n d min o r a s s e mb lie s a r e n o t n e c e s s a r ily d r a w n in th e p o s itio n th e y a s s u me i n t h e e q u i p me n t . T h e y ma y b e d r a w n wi t h s o me s u r f a c e , s i d e , o r r e f e r e n c e l i n e p a r a lle l o r p e r p e n d ic u la r to th e lo w e r b o r d e r o f th e d r a w in g . L a th e - tu r n e d p a r ts a r e u s u a l l y d r a w n w i t h t h e l ar g e r d i a me t e r s t o t h e l e f t .

3.5.1.

Picturization U n n e c e s s a r y d e t a i l s h a l l b e o mi t t e d f r o m a l l v ie w s a n d s e c t i o n s i f c l a r i t y i s n o t s a c r i f i c e d a n d i f d r a f t i n g t i me i s r e d u c e d . S e e F i g u r e 11 on page 34.

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ENGINEERING DRAWING STANDARDS MANUAL

Figure 11: Details of Auxiliary

3.5.2.

Sections a.

A s e c tio n a l v ie w s h a ll b e ma d e th r o u g h a n o u ts id e v ie w a n d n o t th r o u g h a n o th e r s e c tio n a l v ie w . S e e F ig u r e 1 2 o n p a g e 3 5 .

b . T h e lo c a tio n o f a s e c tio n is i n d i c a t e d b y a c u t t i n g p l a n e w i t h r e f e r e n c e le tte r s a n d a r r o w h e a d s s h o w in g th e d ir e c tio n in w h ic h the section is viewed. c.

S e c tio n a l v ie w s s h a ll n o t p r o j e c t d i r e c t l y a h e a d o f t h e c u t t i n g p la n e a r r o w h e a d s a n d s h o u ld b e a s n e a r a s p r a c tic a b le to th e p o r tio n s o f th e d r a w in g th a t th e y c la r if y.

d . T h e a x e s o f s e c tio n a l v ie w s s h o u ld n o t b e r o ta te d ; h o w e v e r , th e c u ttin g p la n e ma y v a r y in d ir e c tio n ( s e e F ig u r e 1 2 ) . I f v ie w s h a v e to b e r o ta te d , th e a n g le a n d d ir e c tio n o f r o ta tio n mu s t b e g iv e n . e.

Visible and invisible outlines beyond the cutting plane should n o t b e s h o w n u n le s s n e c e s s a r y f o r c la r if ic a tio n .

f.

S h a f ts , b o lts , n u ts , e tc . , w h ic h a r e in a c u ttin g p la n e s h o u ld n o t b e c r o s s - h a tc h e d .

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35

NOT RECOMMENDED SECTION ROTATED XX° CW

A

INCORRECT PROJECTION WRONG SIDE OF CUTTING PLANE NOT ACCEPTABLE

A CORRECT BUT NOT IN LINE OF PROJECTION

SECTION

A-A

CORRECT BUT NOT IN LINE OF PROJECTION

Figure 12: Designation and Positioning of Sectional Views

g . T h e c r o s s - h a tc h in g s ymb o l f o r c a s t ir o n s h o u ld b e u s e d r e g a r d le s s o f ma te r ia l a s s h o w n in F ig u r e 1 3 . I f e s s e n tia l f o r c la r ity, ma te r ia l f r o m w h ic h th e p a r ts a r e ma d e s h o u ld b e in d ic a te d b y th e c o n v e n tio n s g iv e n in A N S I Y 1 4 . 2 M- 1 9 7 9 .

CAST OR MALLEABLE IRON AND GENERAL USE FOR ALL MATERIALS

Figure 13: Conventions for Material

h . W h e n s e c t i o n s a r e r e mo t e l y l oc a t e d , z o n e i n f o r ma t i o n s h a l l b e a d d e d to b o th lo c a tio n s ( i. e . , f r o m w h e r e th e s e c tio n is ta k e n and to the location where the section is shown).

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3.5.3.

Views A v i e w i s u s e d t o e n l a r g e o r c l a rif y a p o r tio n o f th e d r a w in g . S e e F ig u r e 1 4 .

A D

5A SH3

A

A

A-A

SEE VIEW

1D SH1

SCALE 2/1

(TITLE BLOCK NOT SHOWN)

1

5

Figure 14: Clarification of a Portion of a Drawing

a.

P r o j e c te d v ie w s w h ic h a r e s h o w n a lo n g c o mmo n c e n te r lin e s to t h e i r o r i g i n n e e d n o t b e i d e n t i f i e d . V i e w s l o c a t e d d ir e c t l y a h e a d o f v i e w i n g p l a n e a r r o w h e a d s a r e a b s o l u t e l y p r o h ib i t e d .

b . “ T r a n s p o r te d ” v ie w s o r s e c tio n s a r e th o s e w h ic h a r e n o t d ir e c t p r o j e c tio n s . T h e y mu s t b e id e n tif ie d w h e r e s h o w n , b y le tte r s , a n d a t t h e i r o r i g i n b y t h e c u t t i n g p la n e l i n e s a n d l e t t e r s . c.

V ie w s s h o u ld n o t b e r o ta te d ; h o w e v e r , if v ie w s h a v e to b e r o t a t e d f o r a l e g i t i ma t e r e a s o n , t h e a n g le a n d d ir e c t i o n o f r o ta tio n mu s t b e g iv e n .

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3.5.4.

37

Details A d e ta il is a p a r tia l v ie w w h ic h s h o w s a p o r tio n o f a n o th e r v ie w in t h e s a me p la n e a n d w i l l u s u a l l y d e p ic t g r e a t e r d e t a i l . D e t a i l s s h o u ld n o t b e r o ta te d . S e e F ig u r e 1 5 .

DETAIL

A

SCALE 4/1

SEE DETAIL

A

Figure 15: Identification of Details

3.5.5.

Identification of Sections, Views, and Details a.

I d e n tif yin g le tte r s f o r s e c tio n s , v ie w s , a n d d e ta ils a r e a s s ig n e d in a lp h a b e tic a l s e q u e n c e a s f o llo w s : F o r s e c tio n s a n d s u c h v ie w s a s “ A - A ” in F ig u r e 1 4 o n p a g e 3 6 , u s e h yp h e n a te d le tte r s . A f te r “ Z - Z , ” b e g in : “A A - A A , ” “ A B - A B , ” e t c .

b . F o r e n c ir c le d d e ta ils s u c h a s d e ta il “ A ” in F ig u r e 1 5 , u s e s in g le letters. After “Z,” begin: “AA,” “AB,” etc. c.

The letters “I,” “O,” “Q,” and “X,” either as a single letter or as d o u b le - le tte r e n tr ie s , s h a ll n o t b e u s e d . A d e s ig n a te d le tte r o r c o mb in a tio n o f le tte r s o n a r e le a s e d d r a w in g s h a ll n o t b e u s e d f o r a n o th e r s e c tio n , v ie w , o r d e ta il o n th e s a me d r a w in g .

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3.5.6.

Locating Sections, Views, and Details O n z o n e d a n d /o r mu l t i s h e e t d r a w i n g s , a v ie w , s e c t i o n , o r d e t a i l a n d t h e p o r t i o n o f t h e d r a w i n g i t c l a r i f i es s h a l l b e c r o s s - r e f e r e n c e d a s follows:

Reference on Original Drawing to View on Clarifying Sheet

SEE VIEW

A-A

5A SH3

Reference at View on Clarifying Sheet to Original Drawing

VIEW

A-A

SCALE 4/1

1D SH1

N o te : Z o n e b lo c k s iz e is 1 /2 - in c h s q u a r e .

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4.

TYPES OF DRAWINGS

4.1.

Altered or Selected Vendor Part Drawing A lte r e d v e n d o r p a r t o r s e le c te d v e n d o r p a r t d r a w in g s s h a ll b e p r e p a r e d o n G S F C f o r ma t w h e n a n e x is tin g v e n d o r p a r t c a n n o t b e u s e d a s is a n d it is d e s ir e d to d o c u me n t a n d c o n tr o l th e a lte r a tio n o r s e le ctio n o f th e p a r t. P r e p a r a tio n s h a ll n o t b e i n i t i a t e d u n t i l t h e v e n d o r h a s b e e n r eq u e s t e d t o ma k e t h e a l t e r a t i o n o r s e le c tio n , s u p p ly h is n u mb e r , a n d s u p p ly d o c u me n ta tio n . W h e n th e d r a w in g is p r e p a r e d b y G S F C, it s h a ll s p e c if y th e p a r t to b e a lte r e d o r s e le c te d b y v e n d o r n u mb e r , n a me , a n d a d d r e s s a n d s h a ll c o mp le te ly d e lin e a te th e a lte r a tio n o r selection. In addition, the drawing shall specify reidentification of the part by th e G S F C p a r t n u mb e r . A n a lte r e d o r s e le c te d v e n d o r p a r t d r a w in g s h a ll b e id e n tif ie d b y th e w o r d s “ A lte r e d V e n d o r P a r t D r a w in g ” imme d ia te ly a b o v e th e T i t l e b lo c k . S e e F i g u r e 1 6 .

REVISION

1.

DESCRIPTION

SYM

NOTES: UNLESS OTHERWISE SPECIFIED

DATE

APPROVAL

ALTERED PART SOURCE INFORMATION; PART NO: 118-R-0715 RELAY VENDOR; LEACH CORP. ADDRESS; LOS ANGELES, CALIF.

2.

INK STAMP PART NUMBER PER .......... SUGESTED SOURCE OF SUPPLY (INK) ............... ............... ...............

ø

.218

+ .006 - .000

-1 HOLE

ENLARGE EXISTING

ø

.166 HOLE

FOLD REV

LINE

AT THIS LOCATION ONLY

GC

ALTERED VENDOR PART DRAWING

SEE NOTE 2 (REIDENTIFY THE PART TO GSFC PART

REQ'D

ITEM

REQ'D

DESCRIPTION

PART NO.

NO.

NUMBER GCXXXXXXX.)

MATERIAL

MATERIAL SPEC & NO.

LIST OF MATERIAL

UNLESS OTHERWISE SPECIFIED-DIMENSIONS ARE IN INCHES

NATIONAL AERONAUTICS AND

TOLERANCES: .XX

±.02

Goddard Space Flight Center

SPACE ADMINISTRATION

.XXX

±.005

FRACTIONS

±1°

125

NAME

±1/16

INIT

GREENBELT, MARYLAND

DATE DRAWINGINTERPRETED PER GSFC-X673-64-1

DESIGNER REMOVE ALL BURRS AND SHARP EDGES R .010 OR CHAMFER MAX.

FLIGHT HARDWARE/POST FAB HARDNESS TEST REQ'D HARDNESS TEST NOT REQUIRED

DRAWN

TITLE

NON FLIGHT

TEST HARDNESS PER ASTM E-18, LOCATION OPTIONAL

CHECKED

TEST HARDNESS PER ASTM E-18 WHERE INDICATED APPROVED

ON FIELD OF DRAWING THUS NO NON-DESTRUCTIVE EXAMINATION (NDE) REQ'D

APPROVED

NDE REQUIRED PER S-313-009 CODE THIS DRAWING WAS PRODUCED USING

REV

APPROVED-STRESS SOFTWARE:

GC

VERSION: APPROVED-ENGINEER

FILE NAME:

USED ON

CODE

SCALE

WT

SH

LINE

FOLD

NEXT ASSY

Figure 16: Sample Altered or Selected Vendor Part Drawing

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4.2.

ENGINEERING DRAWING STANDARDS MANUAL

Assembly Drawing A n a s s e mb ly d r a w in g s h o w s tw o o r mo r e s e p a r a b le p a r ts j o in e d to f o r m a s to c k a b le ite m, o r a g r o u p o f a s s e mb lie s r e q u ir e d to f o r m a n a s s e mb ly o f h ig h e r o r d e r . F ig u r e 1 7 s h o w s a n e x a mp le o f a n a s s e mb ly d r a w in g w h e n a s e p a r a te p a r ts lis t is r e q u ir e d . F ig u r e 3 4 , “ A s s e mb ly D r a w in g W ith L is t o f Ma te r ia l, ” o n p a g e 8 0 , s h o w s a n a s s e mb ly d r a w in g w ith th e L is t o f Ma te r ia l o n th e d r a w in g . Re f e r a ls o to S e c tio n 5 . 1 , “ P a r t N u mb e r in g , ” o n p a g e 6 1 .

REVISION DESCRIPTION

SYM

1

GXXXXXX5

DATE

APPROVAL

GXXXXXX1

7

MS15795-305

8

MS35649-63

2

2X

9

MS35234-17

10

MS15795-305

11

MS35649-44

2X

GXXXXXX6

4

GXXXXXX3

5

GXXXXXX4

FOLD

3

REV

4X

LINE

2X

2X

GXXXXXX2

GC

6

REQ'D

ITEM

REQ'D

PART NO.

MATERIAL

DESCRIPTION

NO.

MATERIAL SPEC & NO.

LIST OF MATERIAL

UNLESS OTHERWISE SPECIFIED-DIMENSIONS ARE IN INCHES

NATIONAL AERONAUTICS AND

TOLERANCES: .XX

±.02

Goddard Space Flight Center

SPACE ADMINISTRATION

.XXX

±.005

FRACTIONS

±1°

125

NAME

±1/16

INIT

GREENBELT, MARYLAND

DATE DRAWING INTERPRETED PER GSFC-X673-64-1

DESIGNER REMOVE ALL BURRS AND SHARP EDGES R .010 OR CHAMFER MAX.

FLIGHT HARDWARE/POST FAB HARDNESS TEST REQ'D HARDNESS TEST NOT REQUIRED

DRAWN

TITLE

NON FLIGHT

TEST HARDNESS PER ASTM E-18, LOCATION OPTIONAL

CHECKED

TEST HARDNESS PER ASTM E-18 WHERE INDICATED APPROVED

ON FIELD OF DRAWING THUS NO NON-DESTRUCTIVE EXAMINATION (NDE) REQ'D

APPROVED

NDE REQUIRED PER S-313-009 CODE THIS DRAWING WAS PRODUCED USING

REV

APPROVED-STRESS SOFTWARE:

GC

VERSION: APPROVED-ENGINEER NEXT ASSY

USED ON

CODE

SCALE

WT

SH

LINE

FOLD

FILE NAME:

Figure 17: Sample Assembly Drawing

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4.3.

Detail Drawing A d e t a i l d r a w i n g s h o w s a l l t h e i n f o r ma t i o n n e c e s s a r y f o r f a b r i c a t i n g a n i t e m, in c lu d in g th e ma te r ia l f r o m w h ic h it is ma d e a n d th o s e f in is h e s , p r o te c tiv e c o a tin g s , a n d p r o c e s s e s r e q u ir e d to f a b ric a te th e e n d p r o d u c t. O n ly o n e ite m ( d e ta il p a r t) s h a ll b e p r e s e n te d p e r d r a w in g . S e e F ig u r e 1 8 .

REVISION DESCRIPTION

SYM

DATE

APPROVAL

NOTES: UNLESS OTHERWISE SPECIFIED 1.

IRIDITE IN ACCORDANCE WITH MIL-C-5541. CLASS1A.

2

RUBBER STAMP .125 HIGH CHARACTERS AS SHOWN USING ____________. ORIGINAL SOURCE OF SUPPLY: _________ INSERT COMPLETE ADDRESS _________

O .500

REV

FOLD

.750

LINE

1.500

1.000

1.120

BAR

REQ'D

ITEM

REQ'D

AL ALY

PART NO.

QQ-A-225/8 6061-T6

MATERIAL

DESCRIPTION

NO.

GC

2.250

MATERIAL SPEC & NO.

LIST OF MATERIAL

UNLESS OTHERWISE SPECIFIED-DIMENSIONS ARE IN INCHES

NATIONAL AERONAUTICS AND

TOLERANCES: .XX

±.02

Goddard Space Flight Center

SPACE ADMINISTRATION

.XXX

±.005

FRACTIONS

±1°

125

NAME

±1/16

INIT

GREENBELT, MARYLAND

DATE DRAWING INTERPRETED PER GSFC-X673-64-1

DESIGNER REMOVE ALL BURRS AND SHARP EDGES R .010 OR CHAMFER MAX.

FLIGHT HARDWARE/POST FAB HARDNESS TEST REQ'D HARDNESS TEST NOT REQUIRED

DRAWN

TITLE

NON FLIGHT

TEST HARDNESS PER ASTME-18, LOCATION OPTIONAL

CHECKED

TEST HARDNESS PER ASTME-18 WHERE INDICATED APPROVED

ON FIELD OF DRAWING THUS NO NON-DESTRUCTIVE EXAMINATION (NDE) REQ'D

APPROVED

NDE REQUIRED PER S-313-009 CODE THIS DRAWINGWAS PRODUCED USING

REV

APPROVED-STRESS SOFTWARE:

GC

VERSION: APPROVED-ENGINEER NEXT ASSY

USED ON

CODE

SCALE

WT

SH

LINE

FOLD

FILE NAME:

Figure 18: Sample Detail Drawing

I n th e c a s e o f in s e p a r a b le p a r ts ( s u c h a s th o s e th a t a r e w e ld e d , r iv e te d , b o n d e d , o r b r a z e d , e t c . ) w h i c h f o r m a n i n t e g r a l u n i t ( p a r t ) n o t c a p a b l e o f b e i n g d i s a s s e mb l e d f o r r e p l a c e me n t , r e f e r t o p a r a g r a p h 4 . 6 e n t i t l e d “ I n s e p a r a b l e A s s e mb l y D r a w i n g ” on page 44. M u l t i d e t a i l d r a w i n g s a r e n o t a l l o w e d . T h e G S F C r e q u ir e s a u n iq u e d r a w i n g n u mb e r p e r p a r t s o t h a t e a c h p a r t c a n b e i n d i v i d u a l l y e s t i ma t e d b y f a b r i c a t o r s a n d id e n tif ie d f o r in s p e c tio n a n d c o n f ig u r a tio n tr a c k in g .

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ENGINEERING DRAWING STANDARDS MANUAL

4.4.

Drawing Tree A d r a w i n g t r e e i s u s e d t o c o n t r o l t h e d ev e l o p me n t o f d r a w i n g s a n d t h e i r p l a c e i n th e o v e r a ll s c h e me o f th e p r o j e c t. A lth o u g h th is typ e d r a w in g is n o t a r e q u i r e me n t f o r e a c h p r o j e c t , w h e n u s e d p ro p e r l y a n d k e p t u p t o d a t e , i t c a n b e a v a lu a b le ma n a g e me n t a id a n d c a n b e co n ta in e d in a c o n f ig u r a tio n ma n a g e me n t d a ta b a s e . S e e F ig u r e 1 9 . TOP ASSY CONFIGURATION DWG GE XXXXXXX

PAYLOAD ELECTRICAL

4,5 C

GJ 2450200

CONTROL DWGS *

-

GROUND HANDLING

INSTALLATION DRAWINGS

INTERFACE

MODULE-A GJ 2456000

-

-

GJ 2452100

EQUIPMENT GE 2450300

A

-

SOLAR ARRAY BATTERY AVIONI CS ASSY GF 2456050

INSTALLATION A

TBD

ENCODER BOX GE 2456042

GE 2452200

UV SENSOR INSTL -

GD 2452250

BRACKET, CONNECTOR GD 2456070

-

FRAME, WELDING GE 2450350

-

GE 2450351

TYPICAL SYMBOL LIST

1 -

AUTOCAD DRAWING * **

BRACKET, DUAL

** GD 2456789

7 D

DOLLY ASSY GJ 2450330

STAND, MOUNTI NG

-

DUAL BRACKET ASSY GE 2456010

2 -

LIFTING FIXTURE GE 2450360

A

DRAWING SIZE DRAWING NUMBER PRE-ASSIGNED

CABLE, HOIST

DRAWING NUMBER

-

MULTI-USE DRAWING -

TBD

GD 2450365

-

DRAWING REVISION LETTER LIST OUTSTANDING EO NOS.

DUAL HINGE 3

C

SLI NG

TO BE DETERMINED

GE 2456290

GF 24550362

-

WASHER

SPRING, EXTERNAL GC 2456273

GC 2450424

B

SPRING, DETENT GC 2456272

Figure 19: Sample Drawing Tree

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4.5.

43

Electrical/Electronic Drawings E l e c t r i c a l / e l e c t r o n i c d r a w i n g s a r e p r e p a r e d to d e p ic t s c h e ma tic s , w ir in g d ia g r a ms , c a b l e i n t e r c o n n e c t i o n s , a n d d e t a i l e d c a b l e a s s e mb l y d r a w i n g s .

4.5.1.

Electrical and Electronic Symbols A p p l i c a t i o n : S y mb o l s s h a l l b e i n a c c o r d a n c e w i t h A N S I Y 3 2 . 2 1 9 7 5 , G r a p h ic S y m b o ls fo r E le c tr ic a l a n d E le c tr o n ic D ia g r a m s ( o r la te r r e v is io n s ) , u n le s s o th e r w is e n o te d . G r a p h i c e l e c t r i c a l w i r in g s y mb o l s f o r a r c h i t e c tu r a l a n d e l e c t r i c a l la yo u t d r a w in g s s h a ll c o n f o r m to A N S I Y 3 2 . 9 - 1 9 7 2 , G r a p h ic S y m b o ls fo r E le c tr ic a l W ir in g a n d L a y o u t D ia g r a m s U s e d in A r c h ite c tu r e a n d B u ild in g Co n s tr u c tio n ( o r l a t e r r e v i s i o n s ) .

4.5.2.

Electrical and Electronic Diagrams A p p l i c a t i o n : D i a g r a ms s h a l l b e i n a c c o r d a n c e w i t h A N S I Y 1 4 . 1 5 1 9 6 6 ( R- 7 3 ) E le c tr ic a l a n d E le c tr o n ic D ia g r a m s ( o r l a t e r r e v is io n s ) ; A N S I Y 1 4 . 1 5 a - 1 9 7 1 , I n te r c o n n e c tio n D ia g r a m s, s u b s e c tio n 1 5 - 1 1 ; A N S I Y 1 4 . 1 5 b - 1 9 7 3 , E le c tr ic a l a n d E le c tr o n ic s D ia g r a m s , s u b s e c tio n s 1 5 - 1 th r o u g h 1 5 - 1 0 , a n d 1 5 - 1 2 .

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4.6.

Inseparable Assembly Drawing A n i n s e p a r a b l e a s s e mb l y d r a w i n g d e l i n e a te s i t e ms ( p i e c e s ) w h i c h a r e s e p a r a t e l y f a b r i c a t e d a n d a r e p e r ma n e n t l y j o i n e d t o g e t h e r ( e . g . , w e l d e d , b r a z e d , r i v e t e d , n a ile d , b o n d e d , e tc . ) to f o r m a n in te g r a l u n it ( p a r t) n o t c a p a b le o f b e in g r e a d ily d is a s s e mb le d . A n in s e p a r a b le a s s e mb ly d r a w in g ma y b e p r e p a r e d in lie u o f in d iv id u a l mo n o d e ta il d r a w in g s f o r in s ep a r a b le a s s e mb lie s in te n d e d to b e procured and replaced as a unit, where (except for standard hardware) the s e p a r a t e p a r t s a r e o f s i mi l a r o r c o mp a t i b l e ma t e r i a l s . S e e F i g u r e 2 0 ( a l l d a t a , s u c h a s n o te s a n d lis t o f ma te r ia l, a r e n o t s h o w n ) .

REVISION DESCRIPTION

SYM

2X

DATE

APPROVAL

.006

ø .125+ - .000

.063 4.000

.063

.250

3.500 R .125

1.000

1.250 .875 .250 TYP

1.960

.750

.063

2

MS33588-X

3

MS20426-X

FOLD

1

GC

REV

GXXXXXX2

LINE

1.000

REQ'D

ITEM

REQ'D

PART NO.

MATERIAL

DESCRIPTION

NO.

MATERIAL SPEC & NO.

LIST OF MATERIAL

UNLESS OTHERWISE SPECIFIED-DIMENSIONS ARE IN INCHES

NATIONAL AERONAUTICS AND

TOLERANCES: .XX

±.02

Goddard Space Flight Center

SPACE ADMINISTRATION

.XXX

±.005

FRACTIONS

±1°

125

NAME

±1/16

INIT

GREENBELT, MARYLAND

DATE DRAWINGINTERPRETED PER GSFC-X673-64-1

DESIGNER REMOVE ALL BURRS AND SHARP EDGES R .010 OR CHAMFER MAX.

FLIGHT HARDWARE/POST FAB HARDNESS TEST REQ'D HARDNESS TEST NOT REQUIRED

DRAWN

TITLE

NON FLIGHT

TEST HARDNESS PER ASTM E-18, LOCATION OPTIONAL

CHECKED

TEST HARDNESS PER ASTM E-18 WHERE INDICATED APPROVED

ON FIELD OF DRAWING THUS NO NON-DESTRUCTIVE EXAMINATION (NDE) REQ'D

APPROVED

NDE REQUIRED PER S-313-009 CODE THIS DRAWINGWAS PRODUCED USING

REV

APPROVED-STRESS SOFTWARE:

GC

VERSION: APPROVED-ENGINEER NEXT ASSY

USED ON

CODE

SCALE

WT

SH

LINE

FOLD

FILE NAME:

Figure 20: Sample Inseparable Assembly Drawing

A n in s e p a r a b le a s s e mb ly d r a w in g s h a ll f u lly d e f in e th e e n d p r o d u c t o r d e ta il a s s e mb l y a s a s s e mb l e d . P i e c e s o f t h e i ns e p a r a b l e a s s e mb l y ma y b e d e t a i l e d e i t h e r o n s e p a r a te d e ta il d r a w in g s o r o n th e in s e p a r a b le a s s e mb ly d r a w in g its e lf . I n th e c a s e o f w e ld me n ts , th e p a r ts s h a ll n o t b e in d iv id u a lly d e ta ile d o n s e p a r a te d r a w in g s ( d u e to th e c o n s u ma b le ma te r ia l a llo w a n c e s th a t w o u ld h a v e to b e s h o w n o n d e t a i l d r a w i n g s ) , e x c e p t i n c a s e s w h e r e e x t e n s i v e ma c h i n i n g mig h t b e necessary.

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4.7.

Installation Assembly Drawing A n in s ta lla tio n a s s e mb ly d r a w in g s h o w s w h e r e a n d h o w p a r ts a n d /o r a s s e mb lie s a r e in s ta lle d r e la tiv e to s u p p o r tin g s tr u c tu r e o r a s s o c ia te d ite ms . I t s h o w s lo c a tin g d ime n s io n s , to le r a n c in g , s p e c if ie s a tta c h in g p a r ts ( s u c h a s r iv e ts , b o lts , o r s c r e w s ) a n d s p e c i f i c a d j u s t me n t s , a s s e mb l y i n s t r u c t i o n s , a n d p r o c e s s e s r e q u ir e d f o r c o mp le tin g a n d in s p e c tin g th e in s ta lla tio n . F ig u r e 2 1 s h o w s a n e x a mp le w h e n a s e p a r a te p a r ts lis t is r e q u ir e d .

REVISION DESCRIPTION

SYM

DATE

APPROVAL

(GXXXXXX9)

ø

.250

+ .004 - .000

1

4

GXXXXXX2

5

GXXXXXX3

GXXXXXX1

(PEEN ENDS)

ø 4.300 1.812

GXXXXXX4

6

ø

6.000

7

2X ø .500 GXXXXXX8

2

8

2.500

GXXXXXX5

GXXXXXX6 FOLD

GXXXXX12 GXXXXX13 10

11

GXXXXX10

GXXXXX11

REV

9

LINE

1.380 3

1.000

.625

GC

1.150

REQ'D

ITEM

REQ'D

PART NO.

MATERIAL

DESCRIPTION

NO.

MATERIAL SPEC & NO.

LIST OF MATERIAL

UNLESS OTHERWISE SPECIFIED-DIMENSIONS ARE IN INCHES

NATIONAL AERONAUTICS AND

TOLERANCES: .XX

±.02

Goddard Space Flight Center

SPACE ADMINISTRATION

.XXX

±.005

FRACTIONS

±1°

125

NAME

±1/16

INIT

GREENBELT, MARYLAND

DATE DRAWING INTERPRETED PER GSFC-X673-64-1

DESIGNER REMOVE ALL BURRS AND SHARP EDGES R .010 OR CHAMFER MAX.

FLIGHT HARDWARE/POST FAB HARDNESS TEST REQ'D HARDNESS TEST NOT REQUIRED

DRAWN

TITLE

NON FLIGHT

TEST HARDNESS PER ASTM E-18, LOCATION OPTIONAL

CHECKED

TEST HARDNESS PER ASTM E-18 WHERE INDICATED APPROVED

ON FIELD OF DRAWING THUS NO NON-DESTRUCTIVE EXAMINATION (NDE) REQ'D

APPROVED

NDE REQUIRED PER S-313-009 CODE THIS DRAWING WAS PRODUCED USING

REV

APPROVED-STRESS SOFTWARE:

GC

VERSION: APPROVED-ENGINEER NEXT ASSY

USED ON

CODE

SCALE

WT

SH

LINE

FOLD

FILE NAME:

Figure 21: Sample Installation Assembly Drawing

a. That portion of the structure into which the installation is being installed shall b e s h o w n in p h a n to m a n d id e n tif ie d b y its p a r t n u mb e r . S u c h id e n tif ic a tio n s s h a ll b e in d ic a te d a s r e f e r e n c e in f o r ma tio n b y e n c lo s u r e o f th e p a r t n u mb e r in p a r e n th e s e s o r b y u s e o f th e s ymb o l “ RE F . ” b . A p p lic a b le d a tu m p o in ts o r p la n e s , s u c h a s c e n t e r l i n e s o f s t r u c t u r e , p l a n e o f s ymme tr y, s ta tio n p la n e s , e tc . , s h a ll b e s h o w n a n d id e n tif ie d . c.

P a r t s ma y b e d e t a i l e d i n p l a c e o n i ns t a l l a t i o n d r a w i n g s w h e n c o n v e n i e n t .

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ENGINEERING DRAWING STANDARDS MANUAL

4.8.

Interface Control Drawing A n i n t e r f a c e c o n t r o l d r a w i n g s h a l l b e u s e d t o ma i n t a i n c o mp a t i b i l i t y o f a l l p h ys i c a l a n d f u n c t i o n a l d e s i g n s b e t w e e n d if f e r e n t e n g in e e r i n g d e s i g n a c t i v i t i e s . T h e d r a w in g s h a ll c o mmu n ic a te d e s ig n c r ite r ia s u c h a s d ime n s io n s , h o le a n d /o r b o l t s i z e s , h a r d w a r e , a n d u l t i ma t e c h a n g e s r e l a t i v e t o c o f u n c t i o n in g s y s t e ms . “Interface Control Drawing” shall be added directly above the Title block. No l i s t o f ma t e r i a l s i s p e r mi t t e d o n t h i s t y p e o f d r a w i n g ; i t i s n o t t o b e u s e d t o ma n u f a c tu r e p a r ts . S e e F ig u r e s 2 2 a , b e lo w , a n d 2 2 b o n p a g e 4 8 .

REVISION DESCRIPTION

SYM

DATE

APPROVAL

NOTES: UNLESS OTHERWISE SPECIFIED 1

2

SUPPLIED BY XZ CORP. 12 WATERLANE BOSS, CT 06132

12 x ø.281± ø.007

THIS DRAWING IS NOT TO

.004 .000 23.250

M A B C

BE USED FOR FABRICATION OR INSPECTION. 15.500

7.750

+Y .375

3.000 1.500

-B6.000 12.000

FOLD

A-A REV

SECTION

LINE

9.000

24.000

-C+Y CONTROL BOX #5

23°-30'

+Z

GC

INTERFACE CONTROL DRAWING 7.000 REQ'D

ITEM

REQ'D

PART NO.

NATIONAL AERONAUTICS AND

TOLERANCES:

A

.XX

±.02

Goddard Space Flight Center

SPACE ADMINISTRATION

.XXX

±.005

FRACTIONS

±1°

125

NAME

±1/16

INIT

REF

GREENBELT, MARYLAND

DATE DRAWINGINTERPRETED PER GSFC-X673-64-1

DESIGNER

PLATFORM #5

MATERIAL SPEC & NO.

LIST OF MATERIAL

UNLESS OTHERWISE SPECIFIED-DIMENSIONS ARE IN INCHES

A

MATERIAL

DESCRIPTION

NO.

-A-

REMOVE ALL BURRS AND SHARP EDGES R .010 OR CHAMFER MAX.

FLIGHT HARDWARE/POST FAB HARDNESS TEST REQ'D

1

HARDNESS TEST NOT REQUIRED

TEST HARDNESS PER ASTM E-18, LOCATION OPTIONAL

VIEWLOOKING OUTBOARD

DRAWN

TITLE

NON FLIGHT CHECKED

TEST HARDNESS PER ASTM E-18 WHERE INDICATED APPROVED

ON FIELD OF DRAWING THUS NO NON-DESTRUCTIVE EXAMINATION (NDE) REQ'D

APPROVED

NDE REQUIRED PER S-313-009 CODE THIS DRAWINGWAS PRODUCED USING

REV

APPROVED-STRESS SOFTWARE:

GC

VERSION: APPROVED-ENGINEER NEXT ASSY

USED ON

CODE

SCALE

WT

SH

LINE

FOLD

FILE NAME:

Figure 22a: Sample Interface Control Drawing

X-673-64-1F REV 001 DEC. ‘94

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43.526

17.375

49.013

46.83

7.00

AND ROLLERS

4.00 FOR PALLET

WL 140.00 C5A

75.914

Z414

4.00

POINT

C5A SHIPPING

1.0

UAR IN

FILE NAME:

VERSION:

POSITION

THIS DRAWING WAS PRODUCED USING SOFTWARE:

AXIS

48.00

36.361

MMS

TURNOVER

TURNOVER

31.839

Z 414

55.162

CONFIGURATION 47.902

2.072

HINGE

Z 300.76 REF

1.5

MPF

ATTEN. FR.

9.562

11.17

5.00

Z 400

9.388 ADAPTER

6.93 SPACER

COVERS

INCLUDING

68.524

WL 302.00 C5A

AND REMOVE FOR SHIPPING.

REQD

REQD

PART NO.

52.914

LOAD

±.005

±.02

±1°

±1/16

FRACTIONS

TEST HARDNESS PER ASTM E-18 WHERE INDICATED

NEXT ASSY

NDE REQUIRED PER S-313-009 CODE

USED ON

NO NON-DESTRUCTIVE EXAMINATION (NDE) REQ'D

ON FIELD OF DRAWING THUS

16.17

125

NON FLIGHT

/POST FAB HARDNESS TEST REQ'D

TEST HARDNESS PER ASTM E-18, LOCATION OPTIONAL

HARDNESS TEST NOT REQUIRED

FLIGHT HARDWARE

REMOVE ALL BURRS AND SHARP EDGES R .010 OR CHAMFER MAX.

.XXX

.XX

TOLERANCES:

4.39

REVISION

SIDE VIEW

DESCRIPTION

DESCRIPTION

APPROVED-ENGINEER

APPROVED-STRESS

APPROVED

APPROVED

CHECKED

DRAWN

DESIGNER

NAME

SPACE ADMINISTRATION

NATIONAL AERONAUTICS AND

INIT

LIST OF MATERIAL

DATE

CODE

GC

TITLE

SCALE

APPROVAL

WT

SH

REV

GREENBELT, MARYLAND

MATERIAL SPEC & NO.

STRUT

SUPPORT

REMOVABLE

DATE

DRAWING INTERPRETED PER GSFC-X673-64-1

Goddard Space Flight Center

MATERIAL

102.314 FOR STATIC SUPPORT ON POSTS

105.314 FOR TURNOVER EQUIPMENT INSTALLATION

104.314 FOR TURNOVER MOTION (SHOWN)

SYM

INTERFACE CONTROL DRAWING

NOTE 1

46.83

SPACER

SLOTTED

JACK

CELL

COVER

TRUNNION

1.00

Ø190.00

R 101.431

UNLESS OTHERWISE SPECIFIED-DIMENSIONS ARE IN INCHES

NO.

ITEM

69.75

65.239

FOLD

SUPPORT POSTS FOLD AWAY FOR TURNOVER

LINE

X-673-64-1F REV 001 DEC. ‘94 LINE

FOLD

GC

1. NOTES: UNLESS OTHERWISE SPECIFIED

ENGINEERING DRAWING STANDARDS MANUAL

47

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REV

48

ENGINEERING DRAWING STANDARDS MANUAL

Figure 22b: Sample Interface Control Drawing Note: Format is too small. No information should appear beneath revision block or above list of material. Choose a larger format in this case.

4.9.

Matched-Set Drawing A ma tc h e d - s e t d r a w in g d e p ic ts p a r ts th a t a r e ma c h in e - ma tc h e d o r o th e r w is e ma te d a n d f o r w h i c h r e p l a c e me n t a s a ma t c h e d s e t o r p a i r i s e s s e n t i a l . T h e o p e r a t i n g o r ma t i n g c h a r a c t e r i s t i c s o f t h e ma t c h e d p a r ts ( s e t ) s h a l l b e i n d i c a t e d . T h e p a r t s s h a ll b e u n iq u e ly ma r k e d w ith a s e r ia l n u mb e r id e n tif ic a tio n to in d ic a te a ma tc h e d s e t. S e e F ig u r e 2 3 ( a ll d a ta r e q u ir e d f o r th e f in is h e d d r a w in g a r e n o t s h o w n ) . T h e d r a w i n g t i t l e b e c o me s a n a s s e mb l y, a l t h o u g h t h e p a r t s a r e n o t a c t u a l l y a t t a c h e d . “ M a i n t a i n a n d F u r nis h O n ly A s A Ma tc h e d S e t” s h a ll b e a d d e d d ir e c tly above the Title block or List of Material.

REVISION DESCRIPTION

SYM

APPROVAL

GXXXXXX1

2

GXXXXXX2

GXXXXXX3

REV

FOLD

3

LINE

1

DATE

LAP .00008 TO .00015 DIAMETRAL CLEARANCE

GC

MAINTAIN AND FURNISH ONLY AS A MATCHED SET

REQD

ITEM

REQD

PART NO.

MATERIAL

DESCRIPTION

NO.

MATERIAL SPEC & NO.

LIST OF MATERIAL

UNLESS OTHERWISE SPECIFIED-DIMENSIONS ARE IN INCHES

NATIONAL AERONAUTICS AND

TOLERANCES: .XX

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Goddard Space Flight Center

SPACE ADMINISTRATION

.XXX

±.005

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±1°

125

NAME

±1/16

INIT

GREENBELT, MARYLAND

DATE DRAWING INTERPRETED PER GSFC-X673-64-1

DESIGNER REMOVE ALL BURRS AND SHARP EDGES R .010 OR CHAMFER MAX.

FLIGHT HARDWARE/POST FAB HARDNESS TEST REQ'D HARDNESS TEST NOT REQUIRED

DRAWN

TITLE

NON FLIGHT

TEST HARDNESS PER ASTM E-18, LOCATION OPTIONAL

CHECKED

TEST HARDNESS PER ASTM E-18 WHERE INDICATED APPROVED

ON FIELD OF DRAWING THUS NO NON-DESTRUCTIVE EXAMINATION (NDE) REQ'D

APPROVED

NDE REQUIRED PER S-313-009 CODE THIS DRAWING WAS PRODUCED USING

REV

APPROVED-STRESS SOFTWARE:

GC

VERSION: APPROVED-ENGINEER NEXT ASSY

USED ON

CODE

SCALE

WT

SH

LINE

FOLD

FILE NAME:

Figure 23: Sample Matched-Set Drawing

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ENGINEERING DRAWING STANDARDS MANUAL

4.10.

49

Mechanical Schematic A me c h a n i c a l s c h e ma t i c d ia g r a m d r a w i n g i l l u s t r a t e s t h e o p e r a t i o n a l s e q u e n c e o r a r r a n g e me n t o f a me c h a n ic a l d e v ic e . D ime n s io n s a n d r e la tiv e s iz e s o f ite ms ma y b e s h o w n to in d ic a te me c h a n ic a l r e la tio n s h ip . S e e F ig u r e 2 4 .

X-673-64-1F REV 001 DEC. ‘94

G O D D AR D S P AC E F L I G H T C E N T E R , G r e e n b e l t , M a r y l a n d

RANGE SCALE

SUPER-

44T 32P

26T 32P

44T

88T

24T 64P 51T

GEAR SEGMENT 66T

72T 32P

ELEVATION DIFFERENTIAL

MST 66P

34T 64P

DEFLECTION MIRROR

VERTICAL

ALL GEARS 46P.

ENTRY

66T

66T

21T

60T 64P

QUADRUPLE

32P

36T

24T

65L0G 8R 46

32P

20T

72T

20T

180T

LOCK

LINE

44T

(SPIDER)

102T

24T

105T 32P

6

FILE NAME:

SOFTWARE:

L08 8R

COUPLING

72T

90T

VERSION:

5

25

REQ'D

REQ'D

PART NO.

.005

.02

.1

.1/16

FRACTIONS

TEST HARDNESS PER ASTM E-18 WHERE INDICATED

NEXT ASSY

NDE REQUIRED PER S-313-009 CODE

USED ON

NO NON-DESTRUCTIVE EXAMINATION (NDE) REQ'D

ON FIELD OF DRAWING THUS

125

NON FLIGHT

/POST FAB HARDNESS TEST REQ'D

TEST HARDNESS PER ASTM E-18, LOCATION OPTIONAL

HARDNESS TEST NOT REQUIRED

FLIGHT HARDWARE

REMOVE ALL BURRS AND SHARP EDGES R .010 OR CHAMFER MAX.

.XXX

.XX

TOLERANCES:

UNLESS OTHERWISE SPECIFIED-DIMENSIONS ARE IN INCHES

NO.

ITEM

RANGE KNOB (2065 REVS .005)

AZIMUTH BOMBSIGHT KNOB (6MLS/REV) 150REV

BAL CORR KNOB (80REVS-.005)

L0G8R

STOP

ELEVATION BOMBSIGHT KNOB (6ML/REV)

COUPLING

LOCK

LINE

72T

20T

135T

27T

THD RH

DOUBLE

24TRI

COMPENSATOR

AMMUNITION SELECTION KNOB (91 REVS .005)

53T

62T

21T 32P 72T

72T

25

64T

45T

GEARS

L08 R

36T

24T

27T

THIS DRAWING WAS PRODUCED USING

TRANSMITTER

90T 32P

BALLISTIC CORRECTION DIFFERRENTIAL

53T 32P

BALLISTIC CAM

REVERSE CAM

DOUBLE

24TPI RH

24TPI LH

INCREASE IN SUPERELEVATION.

ALL DIRECTIONAL ARROWS INDICATE

GUN LAYING RETICLE

2.

1.

FOLD

NOTES: UNLESS OTHERWISE SPECIFIED

LINE

X-673-64-1F REV 001 DEC. ‘94 DESCRIPTION

APPROVED-ENGINEER

APPROVED-STRESS

APPROVED

APPROVED

CHECKED

DRAWN

DESIGNER

NAME

SPACE ADMINISTRATION

NATIONAL AERONAUTICS AND

INIT

LIST OF MATERIAL

SYM

REVISION

DATE

CODE

GC

TITLE

SCALE

WT

APPROVAL

SH

REV

GREENBELT, MARYLAND

MATERIAL SPEC & NO.

DATE

DRAWING INTERPRETED PER GSFC-X673-64-1

Goddard Space Flight Center

MATERIAL

DESCRIPTION

REV

LINE

FOLD

GC

50 ENGINEERING DRAWING STANDARDS MANUAL

Figure 24: Sample Mechanical Schematic

G O D D AR D S P AC E F L I G H T C E N T E R , G r e e n b e l t , M a r y l a n d

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ENGINEERING DRAWING STANDARDS MANUAL

4.11.

Modification Drawing Mo d if ic a tio n d r a w in g s d e lin e a te c h a n g e s to d e liv e r e d ite ms , s to c k a b le ite ms ( e . g . , S ta n d a r d P a r t D r a w in g o f h o n e yc o mb p a n e l b la n k s ) , a s s e mb lie s , in s ta lla tio n s , o r s ys te ms . D r a w in g s a r e p r e p a r e d to a d d , r e mo v e , o r r e w o r k ite ms , e q u ip me n t i n s t a l l a t i o n s , o r s y s t e ms t o s a t i s f y t h e u s i n g a c t i v i t y ' s r e q u ir e me n ts . T h e y a l s o i n c o r p o r a t e ma n d a t o r y c h a n g e s ( e . g . , s a f e t y , r e l i a b i l i t y , o r a p p l i c a t i o n e x t e n s i o n ) in d e liv e r e d e q u ip me n t. A mo d if ic a tio n d r a w in g s h a ll b e id e n tif ie d b y th e w o r d s “ M o d i f i c a t i o n D r a w i n g ” i mme d i a t e l y a b o v e t h e T i t l e b l o ck . T h i s t y p e o f d r a w i n g h a s a ls o b e e n k n o w n o r r e f e r r e d to a s a “ Ma k e F r o m D r a w in g . ”

4.12.

Outline Drawing A n o u t l i n e d r a w i n g i s a d r a w i n g t h a t d e f i n e s t h e e x t e r n a l c o n to u r o f a n i t e m, u s u a lly b y s h o w in g th e p r o j e c te d v ie w s in tw o o r th r e e p e r p e n d ic u la r p la n e s . T w o t y p e s o f o u t l i n e d r a w i n g s a r e d e p ic t e d i n F i g u r e s 2 5 a , b e l o w , a n d 2 5 b o n page 52. 15MMAXIMUM SPACECRAFT AND TELESCOPE

APPROX 3M

PAM-A 3M

SECTION

SOLAR ARRAY STOWED

ATTITUDE CONTROL THRUSTERS

STAR TRACKER

DATA ANTENNA

DATA ANTENNA

APOGEE ROCKET MOTORS

SUN SHADE SHOWN STOWED

APPROX 1M DIA TELESCOPE

OUTLINE OF SHUTTLE PAYLOAD ENVELOPE

STOWED IN SHUTTLE BAY FOR PAM-A LAUNCH

Figure 25a: First Sample Outline Drawing

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SHUTTLE TRANSPORTATION SYSTEM

COBE SATELLITE

PAYLOAD INSTALLATION +Z Looking out of the plane of paper

576.00

584.00 207.06 186.00

SOLAR ARRAY PANELS

760.50

-Y

+Y 943.50

96.68

217.22

1069.00

SPACECRAFT LENGTH 1108.33 1123.50

1305.50

1307.00

+X Looking aft

Figure 25b: Second Sample Outline Drawing

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4.13.

Source Control Drawing A s o u r c e c o n tr o l d r a w in g s h a ll b e u s e d to limit p r o c u r e me n t o f a v e n d o r - d e s ig n e d a n d ma n u f a c tu r e d p a r t ( o r a s s e mb ly) to th a t s o u r c e o r s o u r c e s t h a t e x c l u s i v e l y p r o v id e th e p e r f o r ma n c e , in s ta lla tio n , a n d i n t e r c h a n g e a b l e c h a r a c t e r i s t i c s o f t h e p a r t s e le c te d a n d te s te d f o r a s p e c if ic a p p lic a tio n . I n th e e v e n t th e v e n d o r s h a ll n o t p r o v id e d r a w in g s a s d e s c r ib e d in p a r a g r a p h 4 . 1 4 . d o n p a g e 5 6 , th e s o u r c e c o n tr o l d r a w in g s h a ll in c lu d e th e s a me d e s c r ip tio n o f th e p a r t a s r e q u ir e d o n s p e c if ic a tio n c o n tr o l d r a w in g s . I f v e n d o r d r a w in g s a r e ma d e a v a ila b le , th e c o n te n t o f th e s o u r c e c o n tr o l d r a w in g s h a ll b e limite d to v e n d o r 's p a r t n u mb e r , n a me , a n d a d d r e s s . I n e i t h e r c a s e , t he f o llo w in g n o te s h a ll a p p e a r o n th e s o u r c e c o n tr o l d r a w in g : “ O n ly th e p a r t( s ) s p e c if ie d o n th is d r a w in g a n d id e n tif ie d b y v e n d o r 's n a me ( s ) , a d d r e s s ( e s ) , a n d p a r t n u mb e r ( s ) h a s ( h a v e ) b e e n te s te d a n d a p p r o v e d b y G S F C f o r u s e i n n a me o f i t e m. A s u b s t i t u t e p a r t s h a l l n o t b e u s e d w ith o u t p r io r te s tin g a n d a p p r o v a l b y G S F C. ” S e e F ig u r e 2 6 .

REVISION DESCRIPTION

SYM

DATE

APPROVAL

NOTES: UNLESS OTHERWISE SPECIFIED 1.

ONLY THE PART SPECIFIED ON THIS DRAWING AND IDENTIFIED BY VENDOR'S NAME, ADDRESS AND PART NUMBER HAS BEEN TESTED AND APPROVED BY GSFC FOR USE IN MODEL XYZ. A SUBSTITUTE PART SHALL NOT BE USED WITHOUT PRIOR TESTING AND APPROVAL BY GSFC.

2.

APPROVED SOURCE:

FOLD REV

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SOURCE CONTROL DRAWING

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UNLESS OTHERWISE SPECIFIED-DIMENSIONS ARE IN INCHES

NATIONAL AERONAUTICS AND

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SPACE ADMINISTRATION

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GREENBELT, MARYLAND

DATE DRAWING INTERPRETED PER GSFC-X673-64-1

DESIGNER REMOVE ALL BURRS AND SHARP EDGES R .010 OR CHAMFER MAX.

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DRAWN

TITLE

NON FLIGHT

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CHECKED

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ON FIELD OF DRAWING THUS NO NON-DESTRUCTIVE EXAMINATION (NDE) REQ'D

APPROVED

NDE REQUIRED PER S-313-009 CODE THIS DRAWING WAS PRODUCED USING

REV

APPROVED-STRESS SOFTWARE:

GC

VERSION: APPROVED-ENGINEER NEXT ASSY

USED ON

CODE

SCALE

WT

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FILE NAME:

Figure 26: Sample Source Control Drawing

a.

T h e s o u r c e c o n tr o l d r a w in g n u mb e r is n o t a p a r t n u mb e r . T h e v e n d o r p a r t its e lf s h a ll b e id e n tif ie d b y th e v e n d o r 's id e n tif yin g n u mb e r .

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b . T h e a s s e mb ly ( o r in s ta lla tio n ) d r a w in g s h a ll c a ll o u t th e p a r t b y s o u r c e c o n tr o l d r a w in g n u mb e r . I n th e L is t o f Ma te r ia l ( p a r ts lis t) o f th e d r a w in g , th e s o u r c e c o n t r o l d r a w i n g n u mb e r s h a l l b e a c c o mp a n i e d b y t h e f o l l o w i n g n o t e : “ V e n d o r P a r t— s e e s o u r c e c o n tr o l d r a w in g . ” A s o u r c e c o n tr o l d r a w in g s h a ll b e i d e n t i f i e d b y t h e w o r d s “ S o u r c e C o n t r o l D r a w i n g ” i mme d i a t e l y a b o v e t h e T i t l e b lo c k . c.

4.14.

A s o u r c e c o n tr o l d r a w in g s h a ll n o t u p g r a d e a v e n d o r 's p a r t b e yo n d th e v e n d o r 's s tip u la tio n s .

Specification Control Drawing Specification control drawings are prepared to record the characteristics of a v e n d o r - d e s ig n e d a n d ma n u f a c tu r e d p a r t ( o r a s s e mb ly) . T h is typ e o f d r a w in g ma y a ls o b e u s e d to d o c u me n t G S F C p a r ts th a t a r e s e n t to a u n iq u e v e n d o r to p e r f o r m a s p e c i f i c o p e r a t i o n b e c a u s e o f s p e c i a l eq u i p me n t a n d / o r h a r d w a r e o n l y a v a i l a b l e t h e r e . S u c h c h a r a c t e r i s tic s a r e s iz e , s h a p e , mo u n tin g d ime n s io n s , a n d o th e r d e s ig n r e q u ir e me n ts , in c lu d in g te s ts , w h e n a p p lic a b le , th a t c o u ld b e o b ta in e d f r o m th e v e n d o r 's ma n u f a c tu r in g d r a w in g s if th e y w e r e ma d e a v a ila b le . T h e v e n d o r 's p a r t n u mb e r , n a me , a n d a d d r e s s s h a ll b e in c lu d e d , e ith e r in n o te o r ta b le f o r m. S e e F ig u r e 2 7 .

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REVISION DESCRIPTION

SYM

DATE

APPROVAL

VENDOR PART NO.

VENDOR NAME & ADDRESS SMITH ENGINEERING COMPANY

XA3-X29XX

BUFFALO. N.Y.

PRODUCTION TEST PROCEDURE WITH PORT 3

PERMISSIBLE LEAKAGE

PLUGGED APPLY

AT RATE OF

COMMENTS

PRESSURE AS FOLLOWS

INTERNAL

EXTERNAL

1 DROP PER HR

5 PSI AT

NONE

AT PORT 1

PORT 2 2250 PSI

NONE

AT PORT 2

NONE

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BE SURE THAT

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THESE TESTS

IS LOOSE IN VALVE WHEN

AT PORT 1

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AT POR 2

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SHOULD BE HELD

PRESSURE

DOWN DURING

IS APPLIED

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.438-20 UNF-3B FOR .25 OD TUBING PER AND 10050 3 PLACES REV

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PORT 2

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PORT 1

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PORT 3

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DESCRIPTION

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MATERIAL SPEC & NO.

LIST OF MATERIAL

UNLESS OTHERWISE SPECIFIED-DIMENSIONS ARE IN INCHES

NATIONAL AERONAUTICS AND

TOLERANCES: .XX

±.02

Goddard Space Flight Center

SPACE ADMINISTRATION

.XXX

±.005

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±1°

125

NAME

±1/16

INIT

GREENBELT, MARYLAND

DATE DRAWING INTERPRETED PER GSFC-X673-64-1

DESIGNER REMOVE ALL BURRS AND SHARP EDGES R .010 OR CHAMFER MAX.

FLIGHT HARDWARE/POST FAB HARDNESS TEST REQ'D HARDNESS TEST NOT REQUIRED

DRAWN

TITLE

NON FLIGHT

TEST HARDNESS PER ASTM E-18, LOCATION OPTIONAL

CHECKED

TEST HARDNESS PER ASTM E-18 WHERE INDICATED APPROVED

ON FIELD OF DRAWING THUS NO NON-DESTRUCTIVE EXAMINATION (NDE) REQ'D

APPROVED

NDE REQUIRED PER S-313-009 CODE THIS DRAWING WAS PRODUCED USING

REV

APPROVED-STRESS SOFTWARE:

GC

VERSION: APPROVED-ENGINEER NEXT ASSY

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CODE

SCALE

WT

SH

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FILE NAME:

Figure 27: Sample Specification Control Drawing a.

T h e s p e c if ic a tio n c o n tr o l d r a w in g n u mb e r is n o t a p a r t n u mb e r . T h e v e n d o r p a r t its e lf s h a ll b e id e n tif ie d b y th e v e n d o r 's id e n tif yin g n u mb e r .

b . T h e a s s e mb l y ( o r i n s t a l l a t i o n ) d r a w i n g s h a l l c a l l o u t t h e p a r t b y t h e s p e c if ic a tio n c o n tr o l d r a w in g n u mb e r . I n th e L is t o f Ma te r ia l ( p a r ts lis t) o f t h e d r a w i n g , t h e s p e c i f i c a t i o n c o n t r ol d r a w i n g n u mb e r s h a l l b e a c c o mp a n i e d b y th e n o te “ V e n d o r P a r t— s e e s p e c if ic a tio n c o n tr o l d r a w in g . ” A s p e c if ic a tio n c o n tr o l d r a w in g s h a ll b e id e n tif ie d b y th e w o r d s “ S p e c if ic a tio n Co n tr o l D r a w i n g ” i mme d i a t e l y a b o v e t h e T i t l e b l o c k . c . A s p e c i f i c a t i o n c o n tr o l d r a w i n g d o e s n o t p r e v e n t p r o c u r e me n t f r o m mu l t i p l e s o u r c e s w h e n th e v e n d o r p a r t h a s b e e n d e te r min e d to b e e q u iv a le n t to o th e r v e n d o r p a r t s b y t h e F e d e r a l C a t a l o g in g P r o g r a m, r e s u l t i n g i n F e d e r a l I t e m I d e n tif ic a tio n N u mb e r ( F I I N ) n u mb e r a s s ig n me n t o r w h e n th e p a r t is ma n u f a c tu r e d b y a lic e n s e e o f th e v e n d o r .

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d . T h e p r e p a r a tio n o f s p e c if ic a tio n c o n tr o l d r a w in g s c a n b e a v o id e d b y p r o c u r in g th e v e n d o r 's ma n u f a c tu r in g d r a w in g s . I n th e e v e n t th e v e n d o r c la ims p r o p r ie ta r y r ig h ts a n d r e f u s e s to p r o v id e h is ma n u f a c tu r in g d r a w in g s , h e s h a ll b e r e q u e s t e d t o f u r n i s h a n o u t l i n e d r a w i n g o f h is p a r t s u f f i c i e n t t o i n c l u d e t h e r e q u ir e me n ts s ta te d a b o v e . W h e n th e v e n d o r p r o v id e s e ith e r typ e o f d r a w in g s ( i . e . , ma n u f a c t u r i n g d r a w i n g s o r a n o u t l i n e d r a w i n g ) , t h e p a r t n u mb e r c a l l o u t o n th e d r a w in g s h a ll b e b y th e v e n d o r 's n u mb e r . e.

4.15.

A s p e c if ic a tio n c o n tr o l d r a w in g s h a ll n o t u p g r a d e a v e n d o r 's p a r t b e yo n d th e v e n d o r 's s tip u la tio n s .

Standard Part Drawing S ta n d a r d p a r ts s h a ll b e s e le c te d f r o m g o v er n me n t a n d in d u s tr y s ta n d a r d s in th a t order of precedence. If neither of these contain a part satisfactory for the design n e e d s , a d r a w i n g s h a l l b e p r e p a r e d . B e f o r e p r e p a r a tio n , it mu s t b e d e te r min e d th a t th e p a r t s h a ll b e a G S F C s ta n d a r d p a r t, in w h ic h c a s e it s h a ll b e d r a f te d o n G S F C s ta n d a r d ma n u a l f o r ma t.

4.16.

Tabulated Drawing A ta b u la te d d r a w in g d e p ic ts s imila r ite ms w i t h d i f f e r e n c e s i n c h a r a c t e r i s t i c s s u c h a s d ime n s io n s , ma te r ia l, f in is h , a n d o th e r r e q u ir e me n ts . T h e s e d if f e r e n c e s a r e ta b u la te d o n th e d r a w in g , th e f ix e d c h a r a c t e r i s t i c s d e p i c t e d o n c e . P ic to r ia l d if f e r e n c e s th a t a r e n o t c le a r s h o u ld b e s h o w n in v ie w s o r d e ta ils a n d s h o u ld b e p r o p e r ly la b e le d . A ta b u la te d d r a w in g p r e c lu d e s th e p r e p a r a tio n o f a n i n d i v i d u a l d r a w i n g f o r e a c h i t e m. S e e F i g u r e 2 8 .

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REVISION DESCRIPTION

SYM

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DATE

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UNLESS OTHERWISE SPECIFIED 1.

PASSIVATE PER QQ-P-35, TYPE II

2.

BAG PART PER MIL-P-116, METHOD III, AND TAG WITH PART NUMBER GC1234567.

A

B 2X R .31

ø1.360 A ø3.265 A .020

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BAR

TABLE I

REQD

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DIM. A

DIM. B

.XX

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TOLERANCES:

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GCXXXXXX5-1

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GREENBELT, MARYLAND

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REMOVE ALL BURRS AND SHARP EDGES R .010 OR CHAMFER MAX.

FLIGHT HARDWARE/POST FAB HARDNESS TEST REQ'D

GCXXXXXX5-3

Goddard Space Flight Center

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COUPLER

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CHECKED

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APPROVED

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VERSION:

1234567

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USED ON

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Figure 28: Sample Tabulated Drawing

4.17.

Tooling Drawing T o o lin g f ix tu r e s a n d te mp la te s a r e p r o d u c tio n a id s . T h e te mp la te s a r e n o t in te n d e d a s e n g in e e r in g d o c u me n ta tio n o f th e f in a l e n d ite m c o n f ig u r a tio n . T h e e n g in e e r in g d r a w in g f o r w h ic h a T o o lin g d r a w in g is b e in g p r o d u c e d s h a ll c a r r y th e f o llo w in g n o te : THESE FEATURES ARE TO BE INSTALLED USING TOOLING TEMPLATE GX-XXXXXXX ONLY. THE ACTUAL TOLERANCES ON THE FEATURES LOCATIONS ARE CONTROLLED BY THE TEMPLATE. W h e n a f f e c te d b y to o lin g , d ime n s io n s a n d th e ir to le r a n c e s s h a ll b e f la g g e d o n th e e n g in e e r in g d r a w in g to th e a b o v e n o te a n d e n c lo s e d in p a r e n th e s e s to in d ic a te r e f e r e n c e i n f o r ma t i o n o n l y.

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T h e f o llo w in g n o te s h a ll b e a d d e d to th e to o lin g d r a w in g : THIS TOOLING IS USED TO FABRICATE PIECE PART GX-XXXXXXX. T h e to o lin g d r a w in g s h a ll b e d ime n s io n e d th e s a me w a y a s th e e n g in e e r in g d r a w in g .

4.18.

Composite Material Drawing A c o mp o s ite ma te r ia l d r a w in g is a n e n g in e e r in g r e p r e s e n ta tio n o f tw o o r mo r e ma t e r i a l s i n c o mb i n a t i o n ( r e i n f o r c i n g f ib e r s a n d r e s in b in d e r ) . T h e f ib e r a n d r e s in d if f e r in f o r m o r c o mp o s itio n , a n d a r e ta ilo r e d to me e t s p e c if ic e n g in e e r in g p r o p e r t i e s . T h e d r a w i n g s h a l l s p e c i f y t h e mu l t i - p ly l a min a t e c o n f i g u r a t i o n t h a t d e f in e s th e n u mb e r o f p lie s , th e s ta c k in g s e q u e n c e , th e p ly a n g le o r ie n ta tio n , th e p r e p r e g f i b e r - r e s i n ma t e r i a l s , a n d t h e p h ys i c a l d i me n s i o n s . F o r th e f o llo w in g r e q u ir e me n ts , r e f e r to F ig u r e 2 9 a s a n e x a mp le o f a c o mp o s ite ma te r ia l d r a w in g . a.

A c o o r d in a te r e f e r e n c e a n d a n g le d ire c tio n s h a ll b e s h o w n f o r b o th th e p a r t and the stacked detail.

b . E a c h p ly s h a ll b e id e n tif ie d b y I te m N o . , a n g le , a n d th ic k n e s s , a s s h o w n in T a b le 1 o f F ig u r e 2 9 . c.

D a s h n u mb e r s ma y b e u s e d to s h o w v ar ia tio n s , s u c h a s le n g th a n d ma te r ia l, a s s h o w n in T a b le 2 o f F ig u r e 2 9 .

d . S ta c k in g s e q u e n c e c o d e ( + 3 0 /0 /- 3 0 /9 0 ) 2 S , a s s h o w n in T a b le 1 in F ig u r e 2 9 d e f in e s th e f o llo w in g f e a tu r e s : P ly 1 P ly 2 P ly 3 P ly 4 Subscript “2” Subscript “S”

+ 3 0 - d e g r e e o r ie n ta tio n 0 - d e g r e e o r ie n ta tio n - 3 0 - d e g r e e o r ie n ta tio n + 9 0 - d e g r e e o r ie n ta tio n in d ic a te s r e p e a t s e q u e n c e ( p lie s 1 – 4 ) tw o time s , f o r b u ild u p o f p lie s 5 – 8 . in d ic a te s s ymme tr y, i. e . , p lie s 1 – 8 r e p e a te d in r e v e r s e o r d e r f o r b u ild u p o f p lie s 9 – 1 6 .

T h e c o d e is r e a d ( + 3 0 /0 /- 3 0 /9 0 /+ 3 0 /0 /- 3 0 /9 0 /9 0 /- 3 0 /0 /+ 3 0 /9 0 /- 3 0 /0 /+ 3 0 ) . E x a mp le s o f o th e r v a r ia tio n s to th e c o d e a r e ( 0 3 /9 0 2 /4 5 /- 4 5 3 ) S . T h i s c o d e i s r e a d ( 0 /0 /0 /9 0 /9 0 /+ 4 5 /- 4 5 /- 4 5 /- 4 5 /- 4 5 /- 4 5 /- 4 5 /+ 4 5 /9 0 /9 0 /0 /0 /0 ) . I n t h e s a me e x a mp l e , t h e s u b s c r i p t “ T ” c a n b e u s e d in lie u o f “ S ” to d e s ig n a te th e t o t a l l a min a t e . F o r e x a mp le , ( 0 3 /9 0 2 /4 5 /- 4 5 6 /4 5 /9 0 2 /0 3 ) T . H o w e v e r , i n t h i s e x a mp le , u s in g th e “ S ” to d e n o te s ymme tr y is th e p r e f e r r e d me th o d . “ T ” is g e n e r a l l y r e s e r v e d f o r l a min a t e s w h e r e s y mme t r y i s n o t s p e c i f i e d , a s i n ( 0 /3 0 /6 0 /9 0 ) T .

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Figure 29: Composite Material Drawing Example

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NUMBERING SYSTEM FOR DRAWINGS AND SUPPORTING DOCUMENTATION T h e G S F C n u mb e r in g s ys te m f o r id e n tif yin g e n g in e e r in g d r a w in g s a n d a s s o c ia te d lis ts is b a s e d o n th e “ u n it n u mb e r ” p r in c ip le , w h e r e b y th e s a me b a s ic n u mb e r a s s ig n e d to a n a s s e mb ly d r a w in g is a ls o a p p lie d to in d e x , u s a g e , d a ta , a n d p a r ts lists. a.

D r a w in g n u mb e r s s h a ll c o n s is t o f a s s ig n e d b a s ic s e v e n - d ig it n u mb e r s , p r e f ix e d b y th e le tte r “ G ” ( s ig n if yin g G S F C) a n d a s e c o n d le tte r s ig n if yin g th e drawing size (B, C, D, E, F, or J).

b . A s s o c ia te d lis t n u mb e r s s h a ll b e th e b a s ic s e v e n - d ig it d r a w in g n u mb e r p r e f ix w i t h P L o r I L a s a p p l i c a b l e . R e f e r to D e f in itio n s p a r a g r a p h 8 . 1 o n p a g e 7 1 . c.

A ll G S F C o r g a n iz a tio n s u s in g d r a w in g n u mb e r s s h a ll ma k e th e ir r e q u e s t to th e M e c h a n i c a l S y s t e ms D i v i s io n , M e c h a n i c a l E n g i n e e r in g Br a n c h ( d e s ig n a te d c u s to d ia n ) f o r b lo c k s o f n u mb e r s f o r th e ir f lig h t h a r d w a r e a n d g r o u n d s u p p o r t e q u ip me n t.

d . T h e ma n a g e me n t o f d r a w i n g n u mb e r s b e c o me s t h e r e s p o n s i b i l i t y o f t h e e n g in e e r in g d e s ig n g r o u p to w h o m th e y a r e a s s ig n e d . Re a s s ig n me n t o f th e n u mb e r s to g r o u p s u b s e c tio n s o r in d iv id u a ls , o th e r c o n tr a c to r s o r s u b c o n tr a c to r s , o r o th e r p r o g r a ms o r p r o j e c ts mu s t b e c o n tr o lle d , r e c o r d e d , a n d ma in ta in e d b y th e Co n f ig u r a tio n Ma n a g e me n t O f f ic e r . e.

E n g in e e r in g d o c u me n ta tio n ( d r a w in g s, e n g in e e r in g c h a n g e o r d e r s , a n d c o n f ig u r a tio n c h a n g e r e q u e s ts ) s h a ll b e r e ta in e d b y th e Co n f ig u r a tio n Ma n a g e r i n t h e r e s p o n s i b l e e n g i n e e r i n g o r g a n iz a t i o n u n t i l o t h e r w i s e d i r e c t e d b y t h e Project.

f.

W h e n i t i s n e c e s s a r y t o i d e n t i f y a d ra w i n g a s a s k e t c h , t h e n u mb e r s h a l l b e a s s i g n e d b y t h e o r i g i n a t o r . T h e s k e t c h s h a l l b e ma i n t a i n e d b y t h e o r i g i n a t o r t o p r e v e n t t h e n e c e s s i t y o f a c e n t r a l c o n t r o l . S k e t c h e s s h a ll n o t b e p r e p a r e d in p l a c e o f e n g i n e e r i n g d r a w i n g s f o r p r o c u r e me n t o f mo c k u p s , mo d e l s , p r e p r o d u c tio n h a r d w a r e o r f lig h t h ar d w a r e , a n d a s s o c ia te d e q u ip me n t.

g . G S F C n u mb e r s f o r s p e c if ic a tio n s , p r o c e s s e s , a n d s t a n d a r d s s h a l l b e i s s u e d b y th e s p e c if ic o r g a n iz a tio n f o r w h ic h s u c h d o c u me n ts a r e b e in g d e v e lo p e d . P r o c e d u r e s g o v e r n in g th e p r e p a r a tio n o f G S F C s p e c if ic a tio n s , p r o c e s s e s , a n d standards shall be in accordance with GSFC-S-250-3, Guide for the P r e p a r a t i o n o f S p e c i f i c a t i o n s. T h e L i b r a r y S e r v i c e s B r a n c h o f t h e G S F C I n f o r ma t i o n M a n a g e me n t D iv i s i o n s h a l l r e c e i v e t w o co p i e s o f f i n a l , a p p r o v e d d o c u me n ts th a t a r e o f g e n e r a l in te r e s t a n d u s e . A lis t o f e x is tin g s p e c i f i c a t i o n s i s ma i n t a i n e d b y t h e L i b r a r y S e r v i c e s B r a n c h .

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h . I n th e a b s e n c e o f a p r o j e c t- d ir e c te d d o c u me n t n u mb e r in g p la n , th e f o llo w in g system shall be used:

GSFC - S - 722 - 93 - 002 - A revision letter ordinal specification number issued in given year year of specification issue Branch, Division or organization issuing & maintaining specification "S" for specification, "P" for procedure Goddard Space Flight Center

5.1.

Part Numbering E a c h d e t a i l p a r t , s u b a s s e mb l y , e t c . , s h all b e id e n tif ie d b y a p a r t n u mb e r a s follows: a.

A n ite m c o v e r e d b y a n a p p r o v e d s tan d a r d a n d u s e d w ith o u t a lte r a tio n o r s e l e c t i o n s h a l l b e i d e n t i f i e d b y t h e p r o p e r s ta n d a r d n u mb e r ( s u c h a s MS n u mb e r f o r mi l i t a r y s t a n d a r d ) , w h i c h s h a l l i n c l u d e a n y d a s h n u mb e r o r c o d e n e c e s s a r y f o r c o mp l e t e i d e n t i t y .

b . E a c h n o n s ta n d a r d ite m s h a ll b e id e n tif ie d b y a p a r t n u mb e r th a t s h a ll b e , o r s h a ll in c lu d e , th e d r a w in g n u mb e r . c.

V e n d o r - d e s ig n e d a n d ma n u f a c tu r e d p a r ts o r a s s e mb lie s s h a ll b e id e n tif ie d b y th e v e n d o r 's p a r t n u mb e r . S e e “ S p e c if ic a tio n Co n tr o l D r a w in g , ” p a r a g r a p h 4 . 1 4 o n p a g e 5 4 , a n d “ S o u r c e Co n tr o l D r a w in g , ” p a r a g r a p h 4 . 1 3 o n p a g e 5 3 .

d . A lte r e d o r s e le c te d p a r ts s h a ll b e id e n tif ie d a s r e q u ir e d . S e e “ A lte r e d o r S e le c te d V e n d o r P a r t D r a w in g , ” p a r a g r a p h 4 . 1 o n p a g e 3 9 . e.

S ymme tr ic a lly o p p o s ite p a r ts s h a ll b e d e s ig n a te d b y - 1 ( s h o w n ) a n d - 2 ( o p p o s i t e ) c a r r y i n g t h e o d d / e v e n r e l a t i o n s h i p t o h i g h e r n u mb e r s a s n e c e s s a r y . T h e p a r t s h o w n s h a ll a lw a ys b e a n o d d n u mb e r , a n d its o p p o s ite , th e n e x t h ig h e r n u mb e r .

P a r ts s h a ll b e id e n tif ie d o n th e f ie ld o f d r a w in g b y s h o w in g b o th th e id e n tif yin g p a r t n u mb e r a n d f in d n u mb e r w h e r e c r o s s - r e f e r e n c e d o n a s e p a r a te E n g in e e r in g P a r ts L is t. S e e “ S a mp le A s s e mb ly D r a w in g , ” F ig u r e 1 7 o n p a g e 4 0 . W h e n th e p a r ts a p p e a r in th e L is t o f Ma te r ia l o n th e d r a w in g , o n ly th e ite m n u mb e r is c a lle d o u t o n th e f ie ld o f th e d r a w in g . S e e F ig u r e 3 4 , “ S a mp le A s s e mb ly D r a w in g W ith L is t o f Ma te r ia l, ” o n p a g e 8 0 . A d e ta il d r a w in g d e p ic ts a s in g le d e ta il p a r t, a n d th e p a r t s h a ll b e d e s ig n a te d b y th e d r a w in g n u mb e r . S e e “ D e ta il D r a w in g , ” p a r a g r a p h 4 . 3 o n p a g e 4 1 . A n in s e p a r a b le a s s e mb ly d r a w in g d e p ic ts p a r t s p e r ma n e n t l y f a s t e n e d t o g e t h e r , a n d th e a s s e mb ly s h a ll b e d e s ig n a te d b y th e d r a w in g n u mb e r . T h e in d iv id u a l p a r ts s h a ll b e d e s ig n a te d b y p a r t n u mb e r a s d e s c r ib e d p e r “ I n s e p a r a b le A s s e mb ly D r a w in g , ” p a r a g r a p h 4 . 6 o n p a g e 4 4 .

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E a c h o f th e p a r ts s h o w n o n a ta b u la te d d r a w in g s h a ll b e id e n tif ie d b y th e d r a w in g n u mb e r s u f f ix e d w ith a d a s h n u mb e r . T h e b a s ic d r a w in g n u mb e r a lo n e s h a ll n o t b e u s e d t o i d e n t i f y a p a r t . S e e “ T a b u la te d D r a w in g , ” p a r a g r a p h 4 . 1 6 o n p a g e 5 6 . P a r t s t h a t mu s t b e ma t e d , a n d f o r w h i c h r e p l a c e me n t a s a ma t c h e d s e t o r p a i r i s r e q u i r e d , s h a l l b e a s s i g n e d a s i n g l e n u mb e r t o d e s i g n a t e e a c h ma t c h e d s e t o r p a i r . Co mp o n e n t p a r ts s h o w n in ma tc h e d - s e t d r a w in g s in s te a d o f s e p a r a te d e ta il d r a w in g s s h a ll b e id e n tif ie d b y th e id e n tif yin g p a r t n u mb e r a n d f in d n u mb e r . S e e “ Ma tc h e d - S e t D r a w in g , ” p a r a g r a p h 4 . 9 o n p a g e 4 8 .

5.2.

Find or Item Numbering U n d e r th e f in d o r ite m n u mb e r in g s ys te m, a n u mb e r is a s s ig n e d to a p a r t o r d e ta il a s s e mb l y f o r t h e p u r p o s e o f l o c a t i n g i t i n t h e f i e l d o f t h e a s s e mb l y d r a w i n g . T h e f in d o r ite m n u mb e r is a ls o s h o w n in th e E n g in e e r in g P a r ts L is t f o r a n a s s e mb ly d r a w in g , c r o s s - r e f e r e n c e d to th e p a r t n u mb e r u s e d f o r p r o c u r e me n t p u r p o s e s .

5.3.

Order of Precedence of Specifications and Standards W h e n i d e n t i c a l p a r t s o r a s s e mb l i e s o f e q u a l q u a l i t y a r e i d e n t i f i e d b y mo r e t h a n o n e d o c u me n t, th e ite m s h a ll b e r e f e r e n c e d o n d r a w in g s in th e f o llo w in g o r d e r :

5.3.1.

Group I G r o u p I c o v e r s g o v e r n me n t s p e c if ic a tio n s a n d s ta n d a r d s lis te d f o r u s e b y G S F C a n d in d u s tr y d o c u me n ts c o o r d in a te d to th e e x te n t indicated as follows in (c) and (e). a.

Co o r d in a te d f e d e r a l s p e c if ic a tio n s a n d s ta n d a r d s .

b . C o o r d in a t e d mi l i t a r y s p e c i f i c a t i o n s a n d s t a n d a r d s ( i n c l u d in g JANs, ANs, and ANDs). c.

I n d u s tr y s p e c if ic a tio n s a n d s ta n d a r d s ( e . g . , th o s e p r o mu lg a te d b y n a t i o n a l l y r e c o g n i z e d as s o c i a t i o n s , c o mmi t t e e s , a n d te c h n ic a l s o c ie tie s ) h a v in g c o o r d in a te d s ta tu s e s ta b lis h e d u n d e r p o lic ie s a n d p r o c e d u r e s o f o th e r g o v e r n me n t a g e n c ie s a n d approved for GSFC use.

d . L i mi t e d c o o r d in a t i o n mi l i t a r y a n d i n t e r i m f e d e r a l s p e c i f i c a t i o n s a n d s ta n d a r d s is s u e d b y o th e r g o v e r n me n t a g e n c ie s a n d approved for GSFC use. e.

5.3.2.

I n d u s tr y s p e c if ic a tio n s a n d s ta n d a r d s h a v in g limite d c o o r d in a tio n s ta tu s e s ta b lis h e d u n d e r p o lic ie s a n d p r o c e d u r e s o f o th e r g o v e r n me n t a g e n c ie s a n d a p p r o v e d f o r G S F C u s e .

Group II G r o u p I I c o v e r s in d u s tr y s p e c if ic a tio n s a n d s ta n d a r d s ( e . g . , th o s e p r o mu l g a t e d b y n a t i o n al l y r e c o g n i z e d a s s o c i a t i o n s , c o mmi t t e e s , a n d te c h n ic a l s o c ie tie s ) a p p r o v e d f o r u s e b y G S F C, f o r w h ic h s ta tu s e q u iv a l e n t t o mi l i t a r y d o c u me n t s h a s n o t b e e n e s t a b l i s h e d .

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Group III G r o u p I I I c o v e r s G o v e r n me n t s p e c if i c a t i o n s a n d s t a n d a r d s n o t p r e v io u s ly lis te d b y G S F C.

5.3.4.

Group IV G r o u p I V c o v e r s in d u s tr y s p e c if ic a tio n s a n d s ta n d a r d s n o t p r e v io u s ly lis te d f o r u s e b y G S F C. Co mp a n y s p e c if ic a tio n s a n d s ta n d a r d s a r e n o t to b e c o n s id e r e d a s a p a r t o f th is g r o u p . Co p ie s o f in d u s tr y s p e c if ic a tio n s a n d s ta n d a r d s s h o u ld b e o b ta in e d f r o m the association concerned.

5.3.5.

Group V G r o u p V c o v e r s c o mp a n y s p e c if ic a tio n s a n d s ta n d a r d s . Re f e r e n c e to a c o mp a n y s p e c if ic a tio n o r s ta n d a r d f o r n e w a p p lic a tio n s o r d e s ig n s s h a ll b e d is c o n tin u e d u p o n th e is s u a n c e o f a s p e c if ic a tio n or standard in Group I, II, III, or IV covering an interchangeable i t e m o f e q u iv a l e n t q u a l i t y . N o te ( a p p lic a b le to G r o u p s I , I I , I V , a n d V a b o v e ) : W h e n in d u s tr y s p e c if ic a tio n s a n d s ta n d a r d s a r e s p e c if ie d o n G S F C d r a w in g s a n d d o c u me n ts , s u c h s p e c if ic a tio n s a n d s ta n d a r d s s h a ll b e a v a ila b le to G S F C p e r s o n n e l.

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6.

ENGINEERING ORDER

6.1.

General Requirements T h e u s e o f E n g in e e r in g O r d e r ( E O ) f o r th e p u r p o s e o f r e v is in g r e le a s e d d r a w in g s is th e p r e f e r r e d me th o d o f c h a n g in g d r a w in g s , a lth o u g h th e me th o d o f d ir e c t c h a n g e to th e d r a w in g ma y b e c h o s e n b y th e p r o j e c t e n g in e e r . After an EO system is elected, it is the responsibility of that project design a c tiv ity to a s s ig n n u mb e r in g a n d ma in ta in th e d o c u me n ta tio n s ys te m. T h e a p p r o v e d E O is c o n s id e r e d a n o f f ic ia l p a r t o f th e o r ig in a l d r a w in g a n d s h a ll a l w a y s b e a v a i l a b le t o o th e r s , e v e n a f t e r i n c o r p o r a t i o n . W i t h t h i s s y s t e m, r e f e r e n c e t o E O s i n t h e r e v i s i o n b l o c k o f d r a w i n g s i s p e r mi t t e d i n p l a c e o f t h e u s u a l d e ta ile d lis tin g o f c h a n g e s .

6.2.

Format Sample T h e f o llo w in g min imu m in f o r ma tio n s h o u ld b e in c lu d e d o n a n E O f o r m. S e e F ig u r e 3 0 a o n p a g e 6 6 . 1 . D R A W I N G & R E V . L E V E L : T h e n u mb e r o f th e d r a w in g to b e c h a n g e d a n d th e r e v i s i o n l e v e l a f f e c t e d . W h e r e t h e c h an g e i s e x a c t l y t h e s a me o n mo r e t h a n o n e d r a w in g , a d d a n a s te r is k to th e d r a w in g a n d r e v is io n le v e l b lo c k ; th e n a d d th e d r a w in g n u mb e r s a lo n g w ith th e n e x t a p p lic a b le E O n u mb e r to th e a s te r is k ta b le o n th e f ie ld o f c h a n g e o n E O p a g e 1 . I f mo r e th a n o n e E O p a g e is r e q u ir e d , t h e a d d i t i o n a l E O p a g e s w i l l o n ly n o te t h a t t h o s e p a g e s a f f e c t t h e list of drawings the EO is written against. 2 . I N C . R E V . : T h e r e v is io n le tte r to b e p r o v id e d b y th e Co n f ig u r a tio n Ma n a g e r ( CM) a t th e time o f d r a w in g c h a n g e in c o r p o r a tio n . O u ts ta n d in g E O n u mb e r s ma y b e in c o r p o r a te d u n d e r o n e r e v is io n le tte r . 3 . T I T L E : T i t l e o f t h e d r a w i n g t o b e r e v is e d . 4 . N E X T A S S E MBL Y : N e x t a s s e mb ly n u mb e r o f th e d r a w in g s a f f e c te d b y th e change. 5 . U S E D O N : T h e typ e o f e q u ip me n t s u c h a s G r o u n d - S u p p o r t E q u ip me n t ( G S E ) o r F lig h t ( F L T ) . 6 . P R O G R A M: N a me o f p r o g r a m. 7 . R E A S O N : R e a s o n w h y t h e c h a n g e i s n e c e s s a r y r a th e r th a n d e s c r ip tio n o f th e c h a n g e . A C o n f i g u r a t i o n C h a n g e R e q u e s t ( C C R ) n u mb e r a n d c l a s s t o b e p r o v id e d b y th e p r o j e c t e n g in e e r w h e r e a p p lic a b le o r w h e n r e q u ir e d b y th e CM. 8. TYPE OF EO: A d v a n c e N o t ic e o f C h a n g e : A c h a n g e t o t h e d r a w i n g t h a t s h a l l t a k e p l a c e a t s o me f u tu r e d a te . S e v e r a l E O s ma y b e in c o r p o r a te d u n d e r th e s a me r e v is io n letter.

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D e v ia t io n : A r e c o r d o f a c h a n g e t o a ma n u f a c t u r e d p a r t . T h e c h a n g e i s t o a c c e p t a d i s c r e p a n c y c o r r e c t i o n i n a p a r t. T h e E O w o u l d b e a s s i g n e d a b a c k s la s h ( \) in s te a d o f a n E O r e v is io n let t e r a n d i d e n t i f i e d a s a “ D e v i a t i o n f o r ” in th e r e v is io n b lo c k . N o p h ys ic a l c h a n g e to th e f ie ld o f s e r ia l n u mb e r the drawing will occur. O t h e r : A r e c o r d o f s p e c ia l te s ts o r c ir c u ms ta n c e s th a t mig h t n o t b e r e q u ir e d o f a ll p a r ts . 9 . D E S C R I P T I O N : D e s c r ip tio n o f th e c h a n g e to b e ma d e s h a ll b e s h o w n u s in g t h e w o r d s “ W a s ” a n d “ N o w ” o r “ R e mo v e ” a n d “ A d d . ” T h e w o r d s “ D e l e t e , ” “ C a n c e l l e d ” o r “ S u p e r s e d e d ” ma y a l s o b e u s e d . I n th e s itu a tio n o f s u p e r s e d in g a p r e v io u s E O , a “ W a s ” a n d “ N o w ” c u r r e n t c o n d itio n mu s t a ls o b e s h o w n , j u s t a s if th e p r e v io u s E O h a d b e e n in c o r p o r a te d . I f t h e c u r r e n t E O f o r ma t i s i n s u f f i c i e nt i n s i z e , a s h e e t 2 o r mo r e ma y b e a d d e d ( s e e F ig u r e 3 0 b ) . I f a la r g e r p a g e is r e q u ir e d a s u p p le me n ta l s h e e t s h a ll b e p r e p a r e d o n a r e g u la r d r a w in g - s iz e s h e e t r e p r o d u c ib le v e llu m a n d s h a ll o f E O n u mb e r o f d r a w in g s ta te “ T h is s u p p le me n ta l s h e e t is p a g e . ” E n te r in th e d e s c r ip tio n a r e a o f p a g e 1 o f th e E O to “ s e e n u mb e r of this EO.” s u p p le me n ta l s h e e t p a g e T h e E O mu s t b e o n a n a p p r o v e d E O f o r m. N o p a s te o n s o r lin e s tr ik e o u ts a r e p e r mi t t e d . A l l l e t t e r i n g mu s t b e . 1 2 i n c h o r l a r g e r a n d u n if o r m i n s i z e . OF ” : I n d ic a te n u mb e r 1 a n d th e to ta l n u mb e r o f E O s h e e ts . 10. “SHEET O n r e ma in in g s h e e ts , e n te r th e n u mb e r o f th a t p a r tic u la r s h e e t o f th e E O o n ly. 1 1 . D i s p o s i t i o n : A c tio n s to b e ta k e n a s a r e s u lt o f th e c h a n g e . 1 2 . E F F E CT I V E : I f th e c h a n g e a f f e c ts o n ly a limite d n u mb e r o f a s e r ie s o f lik e p a r t s , f i l l i n t h e s e r i a l n u mb e r ( s ) a n d d a t e . i F T H E C H A N G E 1 3 . D R A W N B Y : S ig n a tu r e , d a te , a n d G S F C CO D E . 1 4 . I S S U E D BY : S ig n a tu r e , d a te , a n d G S F C c o d e o f CM o f f ic ia l. 1 5 . CH E CK E D : S ig n a tu r e s , d a te , a n d G S F C c o d e s . W h e n p r a c tic a b le , s ig n a tu r e s s h o u ld b e th o s e o f p e r s o n s w h o a p p r o v e d th e o r ig in a l d r a w in g . 16. APPROVED: sIGNATURE, DATE, AND Signature, date, and GSFC CODE. 1 7 . E N G I N E E R : S ig n a tu r e , d a te , a n d G S F C CO D E o f p r o j e c t r e s p o n s ib le e n g in e e r . 1 8 . C C B A P P R O V A L : Co n f ig u r a tio n c o n tr o l b o a r d s ig n a tu r e . 1 9 . J O B O R D E R N O : F a b r ic a tio n n u mb e r to b e a s s ig n e d b y th e c o g n iz a n t e n g in e e r . c o d e 2 0 . E O N O : T o b e a s s ig n e d b y th e c o n f ig u r a tio n ma n a g e me n t o f f ic e o r th e designated representative for the program for which the EO is being written. E O n u mb e r s a r e i s s u e d i n n u me r i c a l s e q u e n c e a g a in s t a p a r tic u la r d r a w in g n u mb e r w h e n th e E O is s e n t f o r c h e c k in g .

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Figure 30a: Engineering Order (sheet 1) ENGINEERING ORDER GODDARD SPACE FLIGHT CENTER GREENBELT,MARYLAND

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OF

Figure 30b: Engineering Order (sheet 2)

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7.

DRAWING REVISIONS

7.1.

Revision Methods Re v is io n s in th e f ie ld o f d r a w in g s a r e ma d e b y d e le tio n , e ith e r b y e r a s u r e o r crossing out (a series of parallel lines placed on the face of drawing over the d e le te d p o r tio n s o f d r a w in g ) , b y a d d itio n , o r b y r e d r a w in g ( a ll d e lin e a tio n s s h a ll b e ma d e t o s c a l e ) .

7.2.

Revision Identification Re v is io n s s h a ll b e id e n tif ie d b y s ymb o ls in th e f ie ld o f th e d r a w in g ( s e e p a r a g r a p h 7 . 4 ) c r o s s - r e f e r e n c e d to th e r e v is io n d e s c r ip tio n . Re v is io n s ymb o ls s h a ll b e e n te r e d in th e r e v is io n b lo c k ( s e e F ig u r e s 3 1 a , 3 1 b , a n d 3 1 c , p a g e 6 9 ) . Re v is io n s s h a ll b e b y a lp h a b e tic a l le tte r a n d o r d e r , e x c e p t th a t le tte r s I , O , Q , S , X , a n d Z s h a ll n o t b e u s e d a s r e v is io n s ymb o ls . F o llo w in g le tte r Y , u s e A A , A B, etc.; after AY, use BA, BB, etc.

7.3.

Revision of Multisheet Drawings T h e r e i s o n l y o n e a c c e p t a b l e me t h o d o f r e c o r d i n g c h a n g e s t o mu l t i s h e e t d r a w i n g s . Re v is io n s to a n y s h e e t( s ) s h a ll b e r e c o r d e d in th e r e v is io n d e s c r ip tio n b lo c k o n s h e e t 1 , a n d r e f e r e n c e s h a ll b e ma d e to s h e e t ( s ) a f f e c t e d . L e v e l o f r e v i s i o n s h a l l be changed on each drawing sheet whether or not that particular sheet is affected. T h e r e v is io n d e s c r ip tio n b lo c k o n a ll s h e e ts o th e r th a n s h e e t 1 s h a ll s ta te “ S e e s h e e t 1 f o r r e v is io n s . ”

7.4.

Revision Recording A s y mb o l ( e . g . , “ A 3 ” ) e n c l o s e d i n a c i r c l e s h a l l a p p e a r i n t h e f i e l d o f d r a w i n g a t th e p o in t o f r e v is io n . T h e le tte r “ A ” r e f e r s to a n y r e v is io n s c o mp le te d a t a g iv e n time . T h e n u mb e r f o llo w in g r e f e r s to th e n u mb e r o f th e r e v is io n ma d e . F ig u r e 3 1 a s h o w s e x a mp le s o f th is . T h e s a me s ymb o l ma y a p p e a r mo r e th a n o n c e i f , i n t h e r e v i s i o n d e s c r i p t i o n c o l u mn , mo r e t h a n o n e a c t i o n t o o k p l a c e p e r l i n e ( s e e F ig u r e 3 1 a u n d e r s ymb o l “ A 3 , ” lin e 2 ) . W h e n c h a n g e s a r e ma d e to a d r a w in g th r o u g h a d ir e c t in c o r p o r a tio n , r e v is io n s ymb o ls a r e r e q u ir e d o n th e f ie ld o f th e d r a w in g , a n d a b b r e v ia te d d e s c r ip tio n s o f th e c h a n g e s mu s t b e r e c o r d e d in th e r e v is io n b lo c k . W h e n c h a n g e s a r e ma d e to a d r a w in g th r o u g h a n E O o r Re v is io n N o tic e s ys te m, r e v is io n s ymb o ls a r e n o t r e q u ir e d o n th e f ie ld o f th e d r a w in g , b u t th e Re v is io n for changes” or “See Revision Notice Blo c k mu s t s ta te “ S e e E O n u mb e r ” in th e r e v is io n d e s c r ip tio n c o lu mn . n u mb e r F o r e ith e r me th o d o f in c o r p o r a tio n , th e p e r s o n in c o r p o r a tin g th e r e v is io n , th e p e r s o n a s s ig n e d to c h e c k th e in c o r p o r a tio n , a n d th e c o g n iz a n t e n g in e e r r e s p o n s i b l e f o r t h e r e v i s i o n a l l s h a l l d at e a n d i n i t i a l t h e r e v i s i o n b l o c k i n t h e a p p r o v e d c o lu mn .

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REVISION SYM A3

B4

DESCRIPTION (1) (2) (3) (1) (3)

R.188 WAS R.250 ADDED .500, 1.500 AND 2.000 DIMS REM'D .750 AND 7.000 DIMS WAS 1.500; (2) WAS .635; WAS 1.000+.005; (4) WAS "NOTE 4" -.000

DATE

APPROVAL

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(SIGNATURE)

2-3-84

(SIGNATURE)

Note: Z o n e c o lu mn n o t r e q u ir e d o n C- s iz e d r a w in g s a n d s ma lle r . Figure 31a: Sample Revision Block

REVISION SYM C

DESCRIPTION (1) REPLACES REV-B WITH CHANGE, SEE EO NUMBER XXX

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Note: I f n o “ E O ” s ys te m is u s e d , th e c h a n g e s w o u ld b e s p e lle d o u t, s imila r to F ig u r e 3 1 a . Figure 31b: Sample Revision Block

REVISION SYM B

DESCRIPTION REPLACES REVISION-B WITHOUT CHANGE

DATE

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1-9-84

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Note: T h e o l d d r a w i n g s h a l l h a v e t h e s t a t e me n t “ R E D R A W N W I T H O U T C H A N G E ” a d d e d to its r e v is io n b lo c k , r e q u ir in g n o c h a n g e le tte r , a n d “ S U P E RS E D E D ” added above its Title block. Figure 31c: Sample Revision Block

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7.5.

ENGINEERING DRAWING STANDARDS MANUAL

Redrawn or Replaced Drawings T h e n e x t r e v is io n le tte r in s e q u e n c e s h a ll b e e n te r e d in th e r e v is io n b lo c k o f th e n e w d r a w i n g . T o t h e r e v i s i o n b l o c k s h a l l b e a d d ed “ R e p l a c e s R e v i s i o n ( o l d r e v is io n le tte r ) W ith Ch a n g e ” a n d a d e s c r ip tio n o f th e c h a n g e o r r e f e r e n c e to a n E n g in e e r in g O r d e r ( E O ) d o c u me n t n u mb e r s ha l l b e r e c o r d e d i n t h e d e s c r i p t i o n c o l u mn . A l l p r e v i o u s r e v is i o n s s h a l l b e o mi t t e d f r o m t h e s u p e r s e d i n g d r a w i n g . T h e s t a t e me n t “ R e p l a c e d W i t h C h a n g e B y R e v i s i o n ( n e w r e v i s i o n l e t t e r ) ” s h a l l b e a d d e d to th e s u p e r s e d e d d r a w in g 's r ev is io n b lo c k a n d “ S u p e r s e d e d ” s h a ll b e p l a c e d i n 1 / 4 - i n c h - h i g h l e t t er i n g d i r e c t l y a b o v e t h e T i t l e b l o c k . W h e n a d r a w i n g i s r e d r a w n w i t h o u t c h a n g e s , t h e p h r a s e “ R e p l a c e s R e v i s i o n ( ol d r e v i s i o n l e t t e r ) W ith o u t Ch a n g e ” s h a ll b e a d d e d to r e v is io n b lo c k a n d r e v is io n le tte r s h a ll r e ma in u n c h a n g e d . S e e F i g u r e 3 1 c . O r i g i n a l n a me s a n d d a t e s f r o m t h e o ld t i t l e b lo c k s h a l l b e t y p e d i n o n t h e r e p l a c e me n t d r a w i n g .

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PARTS LIST AND INDEX LIST T h is s e c tio n e s ta b lis h e s min imu m r e q u ir e me n ts f o r th e p r e p a r a tio n a n d s u b mis s io n o f P a r ts L is ts ( P L ) a n d I n d e x L is ts ( I L ) u s e d w ith e n g in e e r in g d r a w in g s . P a r t s L i s t s ma y b e p r e p a r e d f o r e a c h as s e mb l y d r a w i n g i n a c c o r d a n c e w i t h t h i s s e c tio n . F o r p a r ts lis ts o n d r a w in g s , s e e F ig u r e 3 4 o n p a g e 8 0 o r F ig u r e 3 o n page 10. I n d e x L i s t s ma y b e p r e p a r e d f o r e a c h P a y l o a d , E n g i n e e r i n g M o d e l , M a j o r A s s e mb ly, Co mp le x A s s e mb ly o f a s s e mb lie s , a s d ir e c te d b y P r o j e c t Ma n a g e r .

8.1.

Definitions Cover Sheet: This refers to the first sheet of each Parts List or Index List and is a record of the revisions. P a r t s L i s t ( P L ) : T h i s i s a t a b u la t i o n o f t h e i t e ms n e c e s s a r y f o r f a b r i c a t i n g o r a s s e mb l i n g t h e e n d i t e m( s ) t o w h i c h t h e l i s t a p p l i e s . I n d e x L i s t ( I L ) : T h is is a lis t o f th e o n e p r in c ip a l a n d a ll s u b o r d in a te P L s a p p l i c a b l e t o a ma j o r a s s e mb l y . B u l k M a t e r i a l s : T h e s e a r e i t e ms t h a t a r e n e c e s s a r y c o n s t i t u e n t s o f a n a s s e mb l y o r s u b a s s e mb l y , f o r w h i c h t h e q u a n t i t y r e q u ir e d i s n o t r e a d i l y p r e d e t e r min a b le . E x a mp le s a r e o il, w a x , s o ld e r , c e me n t, in k , d a mp in g f lu id , g r e a s e , p o w d e r e d graphite, flux, welding rod, thread, twine, and chain. If the quantity is known, b u t t h e p h ys i c a l n a t u r e o f t h e ma t e r i a l i s s u c h t h a t i t i s n o t a d a p t a b le t o d e p ic t i o n o n a d r a w in g , o r th e ma te r ia l c a n b e c u t to f in is h e d s iz e b y th e u s e o f s u c h h a n d o r b e n c h to o ls a s s h e a r s , p lie r s , k n iv e s , e tc . w ith o u t f u r th e r ma c h in in g o p e r a tio n s , th e n th e ma te r ia l's c o n f ig u r a tio n s h a ll b e f u lly d e s c r ib e d in w r itin g w ith o u t th e n e c e s s ity o f p ic to r ia l p r e s e n ta tio n . S p e c i a l H a n d l i n g E q u i p m e n t a n d P a c k a g i n g : T h i s t e r m a p p l i e s t o i t e ms s u c h a s b o x e s , s h ip p in g c o n ta in e r s , c r a d le s , c r a n e a tta c h me n ts , a n d o th e r s p e c ia l ite ms n e e d e d f o r s to r in g a n d tr a n s p o r tin g . S p e c i a l T e s t E q u i p m e n t : T h i s t e r m a p p l i e s t o i t e ms o f s p e c i a l t e s t e q u ip me n t th a t a r e r e q u ir e d f o r g o v e r n me n t in s p e c tio n o r s e r v ic e ma in te n a n c e , s u c h a s te s t s ta n d s , in d ic a to r s , e tc . A p p l i c a b l e S t a n d a r d s , S p e c i f ic a t i o n s , a n d P u b l i c a t i o n s : T h i s t e r m a p p l i e s t o d o c u me n ts r e f e r e n c e d o n o r in v o k e d b y th e d r a w in g s .

8.2.

Requirements 8.2.1.

List Preparation T h e P L a n d I L ma y b e p r e p a r e d ma n u a lly o r b y typ e w r ite r o r c o mp u te r w o r d p r o c e s s o r .

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8.2.2.

List Formats L is ts s h a ll u s e p r e p r in te d 8 1 /2 - b y 1 1 - in c h s iz e f o r ma t. T h e p r e p a r a tio n r e q u ir e me n ts a r e p r o v id e d h e r e in . W h e n mo r e t h a n a s i n g l e s h e e t i s r e q u ir e d to p r e p a r e o r r e v is e a l i s t , t h e l i s t t i t l e i s r e q u ir e d o n t h e f i r s t s h e e t o n ly . The design activity shall use a cover sheet as illustrated in F ig u r e 3 2 a o n p a g e 7 4 . E n tr ie s o n th e c o v e r s h e e t s h a ll b e c o mp le te d a s e x p la in e d in “ Co v e r S h e e t, ” s e c tio n 8 . 3 , b e lo w .

8.2.3.

Revision Identification A revision letter and the date of revision shall be applied to each l i s t w h e n a n y c h a n g e i s ma d e . T h e l e t t e r s I , O , Q , a n d X s h a l l n o t b e u s e d a s r e v is io n le tte r s . L is t s h a ll b e r e v is e d in d e p e n d e n tly o f the associated drawings.

8.2.4.

Deleting Items I t e ms t o b e d e l e t e d ma y b e e i t h e r l i n e d o u t, e r a s e d , o r o mi t t e d .

8.2.5.

Adding Items N e w o r s u p e r s e d in g ite ms ma y b e a d d e d a t th e e n d o f a lis t o r inserted in the list in proper sequence.

8.3.

Cover Sheet The Cover Sheet shall be the first sheet for each PL or IL and shall be prepared as indicated herein.

8.3.1.

Format T h e Co v e r S h e e t s h a ll b e p r e p a r e d o n F o r m 6 7 0 - 3 6 ( 1 /6 5 ) . Re f e r to F ig u r e 3 2 a o n p a g e 7 4 .

8.3.2.

Entries E n tr ie s s h a ll b e ma d e in th e b lo c k s a n d c o lu mn s o f th e Co v e r S h e e t a s d ir e c te d o n th e f o llo w in g p a g e : 1 . C O D E I D E N T : E n te r Co d e I d e n tif ic a tio n n u mb e r a s a s s ig n e d b y F e d e r a l S u p p ly CA G E P u b lic a tio n H 4 /H 8 f o r u s in g a c tiv ity. N u mb e r i s l o c a t e d i n t i t l e b lo c k o f d e s i g n a c t i v i t y . 2 . L I S T N O . : E n te r th e n u mb e r o f th e P L o r I L f o r w h ic h th e c o v e r sheet is being prepared. 3. SHEET

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: E n t e r t h e t o t a l n u mb e r o f s h e e t s u s e d .

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4 . RE V : E n t e r r e v is i o n l e t t e r o f t h e l a t e s t r e v is i o n t o t h e P L . Ch a n g e s to th is b lo c k s h a ll b e ma d e b y e r a s u r e . 5 . I T E M N O ME N C L A T U R E : E n t e r t h e s a me n o me n c l a t u r e t h a t a p p e a r s i n t h e T i t l e b lo c k o f t h e a s s e mb l y f o r w h i c h t h e l i s t i s b e in g p r e p a r e d . T h e ite m n o me n c la tu r e s h a ll a lw a ys b e a n o u n . 6 . V E N D O R: I f p r e p a r e d b y c o n t r a c t o r f o r G S F C , e n t e r c o n t r a c t o r n a me a n d F e d e r a l S u p p ly CA G E Co d e N u mb e r s . 7 . P R E P A R E D : E n te r n a me o f p e r s o n p r e p a r in g lis t. 8 . A P P R O V E D : E n t e r s i g n a t u r e o f p er s o n a p p r o v i n g f o r a c c u r a c y a n d c o mp le te n e s s . 9 . E N G A P P R O V A L : E n te r s ig n a tu r e o f A s s is ta n t P r o j e c t E n g in e e r ( o p tio n a l) . 1 0 . E N G A P P R O V A L : E n te r s ig n a tu r e o f P r o j e c t E n g in e e r ( ma n d a to r y f o r a ll p r o c u r e me n t) . 1 1 . A U T H E N T I C A T I O N : E n te r n a me o f p e r s o n d e s ig n a te d to s ig n f o r d e s ig n a c tiv ity o r d iv is io n . 12. CONTRACT NO: When prepared by contractor for GSFC, enter th e c o n tr a c t n u mb e r . 1 3 . L T R : E n te r r e v is io n le tte r o f c u r r e n t r e v is io n . 1 4 . D E S CRI P T I O N : E n te r a c o mp le te a n d c o n c is e d e s c r ip tio n o f th e r e v is i o n t h a t a p p l i e s t o t h e P L . 1 5 . D A T E : E n te r d a te o f r e v is io n . 1 6 . A P P ( A p p r o v a l) : E n t e r i n i t i a l s o f p e r s o n c o mp l e t i n g r e v is i o n review. 1 7 . R E C O R D O F R E V I S I O N : E n te r r e v is io n s ta tu s o f in d iv id u a l P L sheets.

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Figure 32a: Parts List (and Index List) Cover Sheet

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8.4.

75

Parts List Continuation Sheet T h e P L c o n tin u a tio n s h e e t s h a ll b e p r e p a r e d a s in d ic a te d h e r e in . Cir c le d n u mb e r s h a v e b e e n a s s i g n e d t o e a c h c o l u mn o r b l o ck f o r i d e n t i f i c a t i o n o n l y . T h e P L s h a l l c o n ta in a c o v e r s h e e t a n d a s ma n y P L c o n tin u a tio n s h e e ts a s n e c e s s a r y to c o mp l e t e l y l i s t a l l t h e i n f o r ma t i o n .

8.4.1.

Format T h e P L c o n tin u a tio n s h e e t s h a ll b e p r e p a r e d o n F o r m 6 7 0 - 3 7 ( 1 /6 5 ) . Re f e r to F ig u r e 3 2 b o n p a g e 7 6

8.4.2.

Entries E n tr ie s s h a ll b e ma d e in th e b lo c k s a n d c o lu mn s a s d ir e c te d b e lo w : 1 . P A R T S L I S T N O . : O n e a c h s h e e t o f t h e P L , e n t e r t h e n u mb e r o f th e c o r r e s p o n d in g d r a w in g . 2 . S H E E T N O . : O n e a c h s h e e t , e n t e r t h e a p p r o p r i a t e s h e e t n u mb e r . 3 . I T E M F I N D N O S . : E n te r n u mb e r ta k e n f r o m a s s e mb ly d r a w in g . 4 . D W G . D O C U ME N T P A R T O R S T O C K N O . : E n t e r t h e p a r t n u mb e r o r o t h e r i d e n t i f y i n g n u mb e r o f e a c h i t e m i n t h e l i s t . 5. QTY REQD PER ASSY.: Enter the quantity required for each a s s e mb l y . 6 . CO D E I D E N T N O . ( Co d e id e n tif ic a tio n n u mb e r ) : E n t e r a p p r o p r ia te n u mb e r a s s ig n e d to th e d e s ig n a c tiv ity p e r CA G E P u b lic a tio n H 4 /H 8 . W h e n a g o v e r n me n t o r in d u s tr y s ta n d a r d p a r t o r s p e c if ic a tio n n u mb e r a p p e a r s in Co lu mn 4 , n o e n tr y s h a l l b e ma d e i n C o l u mn 6 . W h e n t h e C o d e I d e n t i f i c a t i o n N u mb e r f o r a n i t e m i s i d e n t i c a l t o t h a t e n t e r e d i n B l o c k 1 o f t h e Co v e r S h e e t, d o n o t r e p e a t th e n u mb e r in Co lu mn 6 o f th e P L c o n tin u a tio n s h e e t. 7 . D R A W I N G T I T L E O R I T E M D ES C R I P T I O N ( I t e m d e s c r i p t i o n o r n o me n c l a t u r e ) : E n te r th e n o u n o r n o u n p h r a s e d e s c r ib in g th e ite m w h o s e p a r t o r id e n tif yin g n u mb e r a p p e a r s o n a s s e mb ly d r a w in g . 8 . R E M A R K S : E n t e r i n f o r ma t i o n t h a t c o u ld b e u s e f u l f o r r e f e r e n c e [ i. e . , s p e c if ic a tio n , c o n tr o l d r a w in g s , d e s ig n a tio n s ( e . g . , R1 0 , J 1 4 , e tc . ) , v e n d o r 's ite ms , e tc . ].

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Figure 32b: Parts List Continuation Sheet

S u p p le me n ta r y H e a d in g L is t. I n a d d i t i o n t o t h e h e a d i n g s t h a t a r e u s e d f o r th e ite ms o f th e P L , a s u p p le me n ta r y h e a d in g lis t a s s ta te d below shall be used if applicable: - Bulk Material. - S p e c ia l H a n d lin g E q u ip me n t a n d P a c k a g in g . - S p e c i a l T e s t E q u i p me n t .

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- A p p lic a b le S ta n d a r d s , S p e c if ic a tio n s , a n d P u b lic a tio n s .

8.5.

Index List Continuation Sheet T h e I L c o n tin u a tio n s h e e t s h a ll b e p r e p a r e d a s in d ic a te d h e r e in . Cir c le d n u mb e r s h a v e b e e n a s s i g n e d t o e a c h c o l u mn o r b l o ck f o r i d e n t i f i c a t i o n o n l y . T h e I L s h a l l c o n ta in a c o v e r s h e e t a n d a s ma n y I L c o n tin u a tio n s h e e ts a s n e c e s s a r y to c o mp l e t e l y l i s t a l l t h e i n f o r ma t i o n .

8.5.1.

Format T h e I L c o n tin u a tio n s h e e t s h a ll b e p r e p a r e d o n F o r m 6 7 0 - 3 9 ( 1 /6 5 ) . Re f e r to F ig u r e 3 3 o n p a g e 7 8 .

8.5.2.

Entries E n tr ie s s h a ll b e ma d e in th e b lo c k s a n d c o lu mn s a s d ir e c te d b e lo w : 1 . I N D E X L I S T N U MB E R: O n e a c h s h e e t , e n t e r t h e n u mb e r o f f i r s t a s s e mb l y l e v e l ( t o p o r ma i n a s s e mb l y ) . 2 . S H E E T N O . : O n e a c h s h e e t , e n t e r t h e a p p r o p r i a t e s h e e t n u mb e r . 3. CODE IDENT.: Enter code identification taken from PL. 4 . L I S T N O . : E n te r n u mb e r o f th e P L . 5 . L I S T N O ME N C L A T U R E : E n t e r n o me n c l a t u r e a s i t a p p e a r s o n the PL. 6 . A S S Y L E V E L : E n t e r t h e n e x t a s s e mb l y l e v e l n u mb e r o f t h e l i s t n u mb e r .

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Figure 33: Index List Continuation Sheet

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8.6.

79

Find or Item Number System of Identification 8.6.1.

Definition A f in d n u mb e r o r ite m n u mb e r is a n u mb e r a s s ig n e d to a p a r t o r s u b a s s e mb ly f o r th e p u r p o s e o f lo c a tin g th e p a r t o r s u b a s s e mb ly in th e f ie ld o f th e a s s e mb ly d r a w in g . T h e f in d o r ite m n u mb e r is a ls o s h o w n i n t h e P a r t s L i s t f o r a n a s s e mb l y d r a w i n g , w h e t h e r t h e l i s t i s s e p a r a te o r a n in te g r a l p a r t o f th e d r a w in g . T h e “ f in d n u mb e r ” is u s u a lly a s s o c ia te d w ith a s e p a r a te P a r ts L is t, a n d th e “ ite m n u mb e r ” is u s u a lly a s s o c ia te d w ith th e L is t o f Ma te r ia l o n d r a w in g s , b u t b o th a r e u s e d f o r lo c a tin g p a r ts . P a r ts a n d s u b a s s e mb lie s a r e id e n tif ie d b y o th e r n u mb e r s f o r p u r p o s e s o f p r o c u r e me n t a n d ma r k in g . T h e s e id e n tif yin g n u mb e r s a r e c r o s s - r e f e r e n c e d t o t h e f in d o r ite m n u mb e r s in th e P L o r in a ta b u la tio n o n th e a s s e mb ly d r a w in g .

8.6.2.

Application and Limitation T h e f in d o r ite m n u mb e r s ys te m p r o v id e s a q u ic k me a n s o f lo c a tin g p a r ts o n a r e la tiv e ly s ma ll a r e a o f a d r a w in g h a v in g a h ig h d e n s ity o f p a r ts . I t is p r e f e r r e d th a t th e c o n v e n tio n a l me th o d o f id e n tif ic a tio n ( ite m n u mb e r s ) b e u s e d o n d r a w in g s o f s imp le a s s e mb lie s , e v e n th o u g h f in d a n d p a r t n u mb e r s a r e u s e d f o r c o mp le x a s s e mb lie s th a t a r e c o mp o n e n ts o f th e s a me e q u ip me n t. S e e F ig u r e 3 4 o n p a g e 8 0 . F o r a s a mp le d r a w in g o f a n a s s e mb ly u s in g th e f in d a n d p a r t n u mb e r s ys te m, s e e F ig u r e 1 7 o n p a g e 4 0 . T h e i t e m n u mb e r s y s t e m o f i d e n t i f i c a t i o n s h a l l a l s o b e u s e d t o l o c a t e p i e c e s o n d r a w i n g s o f i n s e p ar a b l e a s s e mb l i e s w h e n ma t e r i a l s p e c if ic a tio n s o r ma te r ia l te mp e r s d if f e r f r o m o n e a n o th e r .

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REVISION DESCRIPTION

SYM

DATE

APPROVAL

12 EXPERIMENT INTERFACE

A

8 11

14

7

FOLD

3

LINE

6

10

4

4 13

13

3

A

3 2

2

14

4

MS20500-428

NUT, 1/4-2B UNF-3B

CRES

13

4

MS20500-1214

NUT, 3/4-16 UNF-3B

CRES

12

1

MS20500-1018

NUT, 5/8-18 UNF-3B

CRES

11

2

MS35308-314

SCREW, CAP, HEXAGON HD

CRES

10

1

GC1416639-1

SHIM

9

1

GC1416635-1

SPACER

8

1

GC1416636

SLEEVE

7

1

GC1416637

SEAT, UPPER

6

1

GC1416638

SEAT, LOWER

5

1

GD1416679

STEM, MOUNT C

4

2

GC1416681

3

3

GC1416640

BEARING

2

2

GC1416680

SEAT, MOUNT C

1

1

GD1416678

BASE, MOUNT C

GD1416697

MOUNT C, ASSEMBLY

1

X REQD

ITEM

REQD

SHAFT, BEARING

GC

5

DESCRIPTION

PART NO.

NO.

SECTION

MATERIAL

MATERIAL SPEC& NO.

LIST OF MATERIAL

UNLESS OTHERWISE SPECIFIED-DIMENSIONS ARE IN INCHES

A-A

REV

9

NATIONAL AERONAUTICS AND

TOLERANCES: .XX

±.02

Goddard Space Flight Center

SPACE ADMINISTRATION

.XXX

±.005

FRACTIONS

±1°

125

NAME

±1/16

INIT

GREENBELT, MARYLAND

DATE DRAWINGINTERPRETED PER GSFC-X673-64-1

DESIGNER REMOVE ALL BURRS AND SHARP EDGES R .010 OR CHAMFERMAX.

FLIGHT HARDWARE/POST FAB HARDNESS TEST REQ'D HARDNESS TEST NOT REQUIRED

DRAWN

TITLE

NON FLIGHT

TEST HARDNESS PER ASTM E-18, LOCATION OPTIONAL

CHECKED

TEST HARDNESS PER ASTM E-18 WHERE INDICATED APPROVED

ON FIELD OF DRAWING THUS NO NON-DESTRUCTIVE EXAMINATION (NDE) REQ'D

APPROVED

NDE REQUIRED PER S-313-009 CODE THIS DRAWINGWAS PRODUCEDUSING

REV

APPROVED-STRESS SOFTWARE:

GC

VERSION: APPROVED-ENGINEER NEXT ASSY

USED ON

CODE

SCALE

WT

SH

LINE

FOLD

FILE NAME:

Figure 34: Sample Assembly Drawing With List of Material

8.6.3.

Drawing Requirements W h e n u s e d in th e f ie ld o f th e d r a w in g , ite m n u mb e r s s h a ll b e e n c lo s e d in c ir c u la r - s h a p e d 1 /2 - in c h - d ia me te r b a llo o n s . F o r d r a w i n g s o f e l e c t r o n ic c h a s s i s a s s e mb l i e s , i f t h e o u t l i n e s o f r e s is to r s o r c a p a c ito r s a r e s h o w n , th e r e f e r e n c e d e s ig n a tio n s s h a ll be placed within those outlines when practical. The corresponding f i n d n u mb e r s s h a l l b e o mi t t e d f r o m t h e v ie w s . I n s u c h c a s e s , a ta b le s h a ll b e p r o v id e d o n th e d r a w in g to s h o w th e f in d n u mb e r a s s i g n e d t o e a c h i t e m t h a t i s i d e nt i f i e d b y a r e f e r e n c e d e s i g n a t i o n o n th e v ie w s . T h e s a me f in d n u mb e r s h a ll b e u s e d f o r a n y g r o u p o f r e f e r e n c e d e s ig n a tio n s a s s ig n e d to ite ms o f id e n tic a l c h a r a c te r is tic s . T h e ite m o r f in d n u mb e r s o n a n y d r a w in g s h a ll b e a s s ig n e d in d e p e n d e n tly o f th o s e o n a n y o th e r d r a w in g . F in d n u mb e r s a s s ig n e d to s u b a s s e mb lie s s h o w n o n a n a s s e mb ly d r a w in g s h a ll b e d is tin g u is h e d f r o m th o s e a s s ig n e d to p a r ts b y a d d in g a le tte r s u f f ix to th e s u b a s s e mb ly f in d n u mb e r .

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List of Material A L i s t o f M a t e r i a l ( L M ) s h a l l b e p r e pa r e d a n d i n c l u d e d o n e a c h a s s e mb l y d r a w i n g t o p r o v id e t h e i n d iv id u a l p a r t o r s u b a s s e mb l y i t e m n u mb e r , q u a n t i t y r e q u ir e d , p a r t n u mb e r , d e s c r ip tio n , ma te r ia l, a n d ma te r ia l s p e c if ic a tio n . S e e F ig u r e 3 4 o n page 80.

8.7.1.

Format T h e L i s t o f M a t e r i a l s h a l l b e p la c e d a b o v e t h e d r a w i n g T i t l e b l o c k a s s h o w n in F ig u r e 3 4 o n p a g e 8 0 .

8.7.2.

Entries E n tr ie s s h a ll b e ma d e in th e b lo c k s a n d c o lu mn s a s in d ic a te d in F ig u r e 3 o n p a g e 1 0 .

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9.

DOCUMENTATION MANAGEMENT

9.1.

Typical Drawing Flow for Flight Projects Engineer (concept) Designer (layout) Engineer (approval of layout concepts) Designer Documents (detail, subassy., assy., instl., etc.) on CAD or conventional board drawing Engineer (review) Design Analyst (checking/review) Engineer (consideration of suggestions affecting design)

Designer (modifications) Design Analyst (checking approval of CAD/paper or vellum original) Designer (records change & forwards check copy)

Engineer (approval) Configuration Manager 1. Update Master CAD File with Names & Dates 2. Release Prints to Fabrication Parts Completed Parts GSFC QA

No

Changes to Released Drawings

Yes

Advance Shop Copy (optional) Engineer EOs (change notice)

Engineer (acceptance or rejection)

Figure 35: Typical Drawing Flow for Flight Projects

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83

Archiving D r a w in g s , E n g in e e r in g O r d e r s ( E O s ) , Ce r tif ic a tio n L o g s , A s s o c ia te d L is ts , a n d Engineering Parts Lists (EPLs) shall be archived after signoff. Following are s o me s a mp le a r c h iv in g me th o d s : a.

F ilin g o f a ll p a p e r o r ig in a ls .

b . S c a n n in g o f th e p a p e r o r ig in a ls to a s ta n d a r d d ig ita l r a s te r ima g e f o r ma t s u c h a s CCI T T G r o u p 4 ( CA L S , MI L - R- 2 8 0 0 2 ) a n d th e n u s in g a d ig ita l s to r a g e s y s t e m t o a r c h i v e t h e r e s u l t i n g d a ta b a s e o f r a s te r ima g e s . c.

Mic r o f ilmin g a n d s to r in g o n a p e r tu r e c a r d s w h e n r e q u e s te d b y a G S F C d iv is i o n t h a t s t i l l h a s e q u ip me n t t o r e t r i e v e t h e i n f o r ma t i o n . Note: B e f o r e d e c i d in g t o a r c h i v e u s i n g a p e r t u r e c a r d s , t h e a v a i l a b i l i t y o f r e t r i e v a l e q u i p me n t a n d t h e q u a l i t y o f r e p r o d u c t io n s h o u l d b e c o n s i d e r e d . T h e q u a l i t y o f d r a w i n g s , l i s t s , a n d d o c u me n t s s h a l l me e t t h e l e g ib i l i t y a n d c o n tr a s t r e q u ir e me n ts o f MI L - D - 5 4 8 0 a n d MI L - M- 9 8 6 8 . T h e mic r o f ilm s u p p lie d s h a ll b e T yp e I , Cla s s 1 .

9.3.

Computer-Aided Design Drawings T h e p u r p o s e o f th is s e c tio n is to s e t p o lic y o n h o w Co mp u te r - A id e d D e s ig n ( CA D ) d r a w in g s a r e to b e h a n d le d w h ile a c tiv e , s u p p lie d , d o c u me n te d , a n d archived.

9.3.1.

Presentation of Computer-Generated Data A c o mp u te r g r a p h ic s o r CA D p r o g r a m i s u s e d t o c r e a t e e l e c t r o n i c d a ta f ile d r a w in g s . A p a p e r o r ig in a l is p r o d u c e d o n w h ic h d r a w in g s i g n a t u r e r e q u i r e me n t s a r e p l a c e d . T h e e l e c t r o n i c d a t a f i l e mu s t b e u p d a t e d t o i n c l u d e n a me s , i n i t i a l s , a n d d a t e s . T h e p a p e r o r i g i n a l i s n o w th e a c tiv e o r ig in a l a n d is f ile d w ith th e c o n f ig u r a tio n ma n a g e r ( CM) , a lo n g w ith th e e le c tr o n ic d a ta f ile w h ic h mu s t b e u s e d f o r future changes. W h e n a r e v is io n is n e e d e d , a n E n g in e e r in g O r d e r ( E O ) p a p e r o r i g i n a l i s w r i t t e n a n d s u b mi t t e d t o t h e C M f o r d is t r i b u t i o n a n d f i l i n g . A f t e r n o mo r e t h a n f i v e o u ts t a n d in g E O s a r e w r i t t e n , a n e w e le c tr o n ic CA D d r a w in g s h o u ld b e p r o d u c e d b y th e o r ig in a tin g G S F C g r o u p o r c o n tr a c to r . T h e c h a n g e s s h a ll b e r e c o r d e d in th e r e v is i o n b lo c k , d a t e d , a n d i n i t i a l e d . A n e w p a p e r o r i g i n a l w i t h t h e changes incorporated, dated, and initialed, shall replace the previous original in the CM file. The new original shall be so s ta mp e d , d a te d , a n d s ig n e d b y th e CM r e p r e s e n ta tiv e .

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C A D d a t a f i l e s a r e t o b e s t o r e d o n me d i a t h a t a r e c o mp a t i b l e w i t h c u r r e n t l y u s e d G S F C s y s t e ms . T h e s e me d ia i n c l u d e mu l t i t r a c k r e e l s o f c o mp u te r ta p e o r f le x ib le d is k s ( 3 - 1 /2 ” o r 5 - 1 /4 ” d o u b le s id e , h ig h d e n s ity) . E a c h s to r a g e me d iu m ma y c o n ta in o n e o r mo r e f ile s . T h e f o l l o w i n g s h a l l a c c o mp a n y e a c h s t o r a g e r e q u e s t : a.

A c o mp u t e r - g e n e r a t e d l i s t o f i n f o r ma t i o n c o n t a i n e d o n e a c h p i e c e o f s t o r a g e me d i u m ( f o r e x a mp l e : n u mb e r , d r a w i n g s i z e , etc.).

b . T h e b r a n d n a me o f t h e c o mp u t e r a n d s o f t w a r e u s e d t o c r e a t e t h e f ile s , a n d th e s o f tw a r e v e r s io n n u mb e r if p r a c tic a l. G S F C r e q u ir e s th a t CA D d a ta b e c o n v e r te d to a s ta n d a r d f o r ma t, s u c h a s t h e D r a w i n g I n t e r c h a n g e F i l e ( D X F ) o r I n i t i a l G r a p h ic s Exchange Specification (IGES). Refer to the National Institute for S ta n d a r d s a n d T e c h n o lo g y f o r th e la te s t v e r s io n o f I G E S . T h is typ e o f f o r ma t a llo w s th e CA D d a ta to b e r e a d b y d if f e r e n t typ e s o f CA D s y s t e ms . F o r a t e c h n i c a l o v e r v i ew o f I G E S , r e f e r t o t h e N a t i o n a l Bu r e a u o f S ta n d a r d s p u b lic a tio n , N BS I R8 1 - 2 2 9 , A T e c h n i c a l B r i e f i n g o n t h e I n i t i a l G r a p h i c s E x c h a n g e.

9.3.2.

Developing and Using Computer-Generated Drawings A ll q u e s tio n s r e g a r d in g th e la te s t in f o r ma tio n s ys te ms a n d a p p lic a tio n s s h o u ld b e d ir e c te d to th e Co mp u te r - A id e d D e s ig n S e c t i o n o f t h e M e c h a n i c a l En g in e e r in g Br a n c h . D r a w in g s g e n e r a te d b y c o mp u te r mu s t b e to s c a le p e r s e c tio n 3 . 4 o n p a g e 3 2 o f t h i s ma n u a l .

9.3.3.

Specification Data T h e A me r i c a n N a t i o n a l S t a n d ar d s I n s t i t u t e p u b l i c a t i o n , D i g i t a l Representation for Communication of Product Definition Data ( A N S I Y 1 4 . 2 6 M- 1 9 8 7 a n d u p d a te s ) , s h o u ld b e c o n s u lte d to e s ta b lis h a s ta n d a r d d a ta c o mmu n ic a tio n s f o r ma t.

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10.

DESIGN REFERENCES, STANDARDS, AND SPECIFICATIONS

10.1.

Dimensioning and Tolerancing 10.1.1.

85

Dimensioning and Tolerancing Practices T h e d ime n s io n in g a n d to le r a n c in g f o r a ll typ e s o f d r a w in g s s h a ll b e in accordance with ANSI Y14.5M-1982 (or later revisions). Copies are available from A me r i c a n N a t i o n a l S t a n d a r d s I n s t i t u t e 1 4 3 0 Br o a d w a y New York, NY 10018 A me r i c a n S o c i e t y o f M e c h a n i c a l E n g i n e e r s 3 4 5 E . 4 7 th S tr e e t New York, NY 10017

10.1.2.

Statements on Dimensioning a.

D i me n s i o n s s h a l l b e c h o s e n a n d p l a c e d o n d r a w i n g s b a s e d o n th e p a r ts in te r r e la tio n s h ip s w ith ma tin g p a r ts , n o t to i n s i g n if i c a n t t h e o r e t i c a l c e n t e r l i n e s .

b . P r ima r y, s e c o n d a r y, a n d te r tia r y d a tu m f e a tu r e s s h a ll b e la b e le d in a lp h a b e tic a l o r d e r w h e n c r e a tin g a n e w d r a w in g . c.

D r a w in g s o f p a r ts r e q u ir in g te mp la te s in th e f a b r ic a tio n p r o c e s s a n d th e ir te mp la te d r a w in g s mu s t b e d ime n s io n e d a lik e . Re f e r to to o lin g r e q u ir e d n o te s in “ D ime n s io n N o te s , ” p a r a g r a p h 2 . 4 . 4 . 1 on page 16.

d . U s e a min imu m o f r e f e r e n c e d ime n s io n s o n d r a w in g s . e.

W h e n u s in g tr u e p o s itio n d ime n s io n in g * , th e d ime n s io n f r o m th e f e a tu r e to o th e r e d g e s a n d its p e r p e n d ic u la r ity r e la tio n s h ip t o a s u r f a c e mu s t b e i d e n t i f i e d w i t h d a t u m l e t t e r s . I mp l i e d d a tu ms ( w h e n n o d a tu m le tte r ( s ) a r e s p e c if ie d ) a r e n o lo n g e r acceptable.

* b a s i c , o r t h e o r e t i c a l l y e xa c t d ime n s io n s ; e x a mp le : X.XXX

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10.2.

ENGINEERING DRAWING STANDARDS MANUAL

Metric Dimensioning N MI 8 0 1 0 . 2 A , U s e o f th e M e tr ic S y s te m o f M e a s u r e m e n t in NA S A P r o g r a m s, e s ta b lis h e s p o lic y a n d r e q u ir e me n ts f o r u s e o f th e me tr ic me a s u r e me n t s ys te m ( a ls o k n o w n a s th e I n te r n a tio n a l S ys te m o f U n its , o r S I ) in N A S A p r o g r a ms a n d th e c o n d itio n s u n d e r w h ic h b o th E n g lis h a n d me tr ic me a s u r e me n ts ma y b e u s e d . W h e n me tr ic d ime n s io n in g is to b e u s e d , th e d o c u me n ts A S T M E 3 8 0 - 9 1 a , S ta n d a r d P r a c tic e fo r U s e o f th e I n te r n a tio n a l S y s te m o f U n its (S I ), a n d N A S 1 0 0 0 0 , NA D o c u m e n ts P r e p a r a tio n a n d M a in te n a n c e in S I (M e tr ic ) U n its , g iv e s p e c if ic in f o r ma tio n a n d c o n v e r s io n f a c to r s .

10.2.1.

SI Units and Symbols a.

S I b a s e u n its a r e s e v e n w e ll- d e f in e d u n its th a t a r e r e g a r d e d a s d ime n s io n a lly in d e p e n d e n t. T h e y a r e a s f o llo w s : SI Base Units

Quantity length mass time electric current thermodynamic temperature* luminous intensity amount of substance

Name meter kilogram second ampere kelvin candela mole

Symbol m kg s A K cd mol

S e le c te d L is t o f D e r iv e d U n its Quantity acceleration angular acceleration angular velocity area density, mass electric charge electric potential electrical resistance energy force frequency magnetic flux moment of force power pressure or stress velocity volume

Name or Unit meter per second squared radian per second squared radian per second square meter kilogram per cubic meter coulomb volt ohm joule newton hertz weber newton meter watt pascal meter per second cubic meter

Symbol m/s2 rad/s2 rad/s m2 kg/m3 C V (Omega) J N Hz Wb Nxm W Pa m/s m3

Formula Axs W/A V/A Nxm kg x m/s2 1/s Vxs J/s N/m2 -

*The SI temperature scale is the International Thermodynamic Kelvin Scale, symbol K. Degree Celsius, symbol C, is for general use. The span of one degree Celsius is exactly one Kelvin.

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b . D ime n s io n in g a n d to le r a n c in g s h a ll b e in S I u n its a n d d e c ima l f r a c t i o n s o f t h e u n i t . A l l l i n e a r d ime n s i o n s s h a l l b e i n mi l l i me t e r s a n d d e c i ma l f r a c t i o n s o f mi l l i me t e r s . A l t h o u g h t h e SI unit for the plane angle is the radian, angles stated in d e g r e e s , min u te s , a n d s e c o n d s , o r in d e g r e e s a n d d e c ima l o f a d e g r e e ( p r e f e r r e d ) , s h a ll b e u s e d w h e n d ime n s io n in g p a r ts . T h e n u mb e r o f d e c i ma l p l a c e s i n t h e d i me n s i o n s h a l l b e t h e s a me a s t h e n u mb e r o f p l a c e s i n t h e r e q u ir e d t o l e r a n c e . T h e r o u n d i n g o f d i me n s i o n s a n d t o l e r a n c i n g s h al l b e i n a c c o r d a n c e w i t h s e c t i o n 1 0 . 2 . 2 . 2 o n p a g e 8 9 . D r a w in g s s h a ll b e d ime n s io n e d a n d toleranced in accordance with ANSI Y14.5M-1982. c.

S u r f a c e t e x t u r e v a l u e s s h a l l b e n o t e d i n mic r o me t e r s (µm) . S e e t h e f o l l o w i n g t a b le : Surface Texture Conversion Values

Micrometers 50 25 12.5 6.3 3.2 1.6 0.8 0.4 0.2 0.1 0.05 0.025

Microinches 2000 1000 500 250 125 63 32 16 8 4 2 1

Roughness Grade Numbers N12 N11 N10 N9 N8 N7 N6 N5 N4 N3 N2 N1

d. Forces, such as tensile and shear loads, shall be shown in n e w to n s ( N ) . e.

S tr e s s e s s h a ll b e s h o w n in me g a p a s c a ls ( MP a = P a x 1 0 6 ) . T h e f o llo w in g ta b le g iv e s e x a mp le s : U l t i ma t e S t r e n g th

English (PSI) Tensile 85,000 125,000 160,000 180,000 220,000 260,000 f.

S I ( MP a )

Shear 50,000 75,000 95,000 110,000 132,000 156,000

Tensile 600 900 1,100 1,250 1,550 1,800

Shear 340 540 660 750 930 1,080

P r e s s u r e v a lu e s f o r liq u id a n d g a s s h a ll b e s h o w n in k ilo p a s c a ls (kPa = Pa x 103 ).

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g . Ma s s v a lu e s s h a ll b e s h o w n in k ilo g r a ms ( k g ) . h . P r e f e r r e d d i a me t e r / p i t c h c o mb i n at i o n s f o r t h r e a d e d f a s t e n e r s a r e shown in the following table, in accordance with ISO/TC20/SC4 Re s o lu tio n s 1 6 9 a n d 2 2 0 .

Dash Numbers

Thread Size 1.0 x 0.25 1.2 x 0.25 1.6 x 0.35

Nominal Size -010 -012 -016

First Oversize (0.5 mm) -

2.0 x 0.40 2.5 x 0.45 3.0 x 0.50

-020 -025 -030

-

-

3.5 x 0.60 4.0 x 0.70 5.0 x 0.80

-035 -040 -050

-055

-

6.0 x 1.0 7.0 x 1.0 8.0 x 1.0

-060 -070 -080

-065 -075 -085

-090

10.0 x 1.25 12.0 x 1.25 14.0 x 1.50

-100 -120 -140

-105 -125 -145

-110 -130 -150

16.0 x 1.50 18.0 x 1.50 20.0 x 1.50

-160 -180 -200

-165 -185 -205

-170 -190 -210

22.0 x 1.5 24.0 x 2.0 27.0 x 2.0

-220 -240 -270

-225 -245 -275

-230 -250 -280

30.0 x 2.0 33.0 x 2.0 36.0 x 2.0 39.0 x 2.0

-300 -330 -360 -390

-305 -335 -365 -395

-310 -340 -370 -400

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i.

T h e to le r a n c e b lo c k o n th e G S F C d r a w in g f o r ma t s h a ll b e in a c c o r d a n c e w i t h t h e f o r ma t e x a mp l e i n F i g u r e 2 b o n p a g e 6 . T o le r a n c e s g iv e n in th e f o r ma t ma y b e a d j u s t e d t o r e f l e c t t h e r e q u ir e me n ts o f th e d e s ig n .

j.

P r e f e r r e d M e t r i c L i m i t s & F i t s ( A N S I B4 . 2 - 1 9 7 8 ) e n c o mp a s s e s to le r a n c e r e q u ir e d d e s ig n a tio n s , p r e f e r r e d limits , b a s ic s iz e s , a n d s ymb o ls .

k . G e n e r a l T o le r a n c e s fo r M e tr ic D im e n s io n e d P r o d u c ts ( A N S I B4 . 3 - 1 9 7 8 ) is u s e d f o r me tr ic d ime n s io n s w ith o u t to le r a n c e d e s ig n a tio n s .

10.2.2.

Unit Conversions

10.2.2.1.

Conversion of Dimensions

F o llo w in g is a ta b le o f s e le c te d c o n v e r s io n f a c to r s . I f f u r th e r c o n v e r s io n f a c to r s a r e n e e d e d , t h e r e f e r e n c e s o u t l i n e d i n p a r a g r a p h 1 0 . 2 o n p a g e 8 6 a r e v e r y u s e f u l. To Convert From: inch in2 foot ft2 lb lbf/in2 (psi) degrees Fahrenheit degrees Fahrenheit

To: meter m2 meter m2 kg Pa degrees Celsius kelvin

Multiply By: 2.540000 E–2* 6.451600 E–4* 3.048000 E–1* 9.290304 E–2* 4.5359237 E–1* 6.894757 E3 tC = (tF – 32)/1.8* tK = (tF + 459.67)/1.8*

* E x a c t c o n v e r s io n

10.2.2.2.

Unit Rounding a.

G e n e r a l Ro u n d in g Ru le s W h e n a f ig u r e is to b e r o u n d e d to f e w e r d ig its th a n th e to ta l n u mb e r a v a ila b le a n d th e f ir s t d ig it d is c a r d e d is le s s th a n 5 , th e la s t d ig it r e ta in e d s h o u ld n o t b e c h a n g e d . F o r e x a mp le , 3 . 4 6 3 2 5 , i f r o u n d e d t o t h r e e d e c i ma l p l a c e s ( i . e . , 4 s i g n i f i c a n t d ig its o r s imp ly 4 d ig its ) , w o u ld b e 3 . 4 6 3 ; if r o u n d e d to th r e e s ig n if ic a n t d ig its , 3 . 4 6 . W h e n t h e f i r s t d ig i t d is c a r d e d i s g r e a t e r t h a n 5 , o r i f i t i s a 5 f o llo w e d b y a t le a s t o n e d ig it o th e r th a n 0 , th e la s t d ig it r e ta in e d s h o u ld b e in c r e a s e d b y o n e u n it. F o r e x a mp le 8 . 3 7 6 5 2 , if r o u n d e d to f o u r d ig its , w o u ld b e 8 . 3 7 7 ; if r o u n d e d to th r e e d ig its , 8 . 3 8 .

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W h e n th e f ir s t d ig it d is c a r d e d is e x a c tly 5 , f o llo w e d o n ly b y zeros, the last digit retained (i.e., the digit preceding the 5, u n d e r lin e d in th e e x a mp le s b e lo w ) s h o u ld b e r o u n d e d u p w a r d if it is a n o d d n u mb e r , b u t n o a d j u s tme n t ma d e if it is a n e v e n n u mb e r . F o r e x a mp le , 4 . 3 6 5 , w h e n r o u n d e d to th r e e s ig n if ic a n t d ig its , b e c o me s 4 . 3 6 . T h e n u mb e r 4 . 3 5 5 w o u ld a ls o r o u n d to th e s a me v a lu e , 4 . 3 6 , if r o u n d e d to th r e e s ig n if ic a n t d ig its . T h is p r o c e d u r e is k n o w n a s “ o d d - e v e n r o u n d in g . ” E x a mp le : Ro u n d 4 6 . 0 2 5 0 0 t o t w o d e c i ma l p l a c e s . Answer:

46.02

E x a mp le : Ro u n d 4 1 . 2 7 5 0 0 t o t w o d e c i ma l p l a c e s . Answer:

41.28

G e n e r a l l y , t h e a c c u r a c y o f t h e n u mb e r o f s i g n i f i c a n t d i g i t s t o w h ic h a v a lu e is to b e r o u n d e d mu s t b e k n o w n b e f o r e a c o n v e r s io n f a c to r is u s e d . I f th is is n o t k n o w n , th e n th e b e s t r u le o f th u mb is to r o u n d th e f in a l v a lu e to th e n u mb e r o f s ig n if ic a n t d ig its c o r r e s p o n d in g to th e le a s t n u mb e r o f s ig n if ic a n t d ig its o f th e o r ig in a l, u n c o n v e r te d n u mb e r s . F o r e x a mp le , to c o n v e r t 1 1 . 4 f e e t ( f t) to me te r s ( m) : 1 1 . 4 x 0 . 3 0 4 8 = 3 . 4 7 4 7 2 , w h ic h r o u n d s to 3 . 4 7 me te r s . N e ith e r t h e c o n v e r s i o n f a c t o r n o r t h e q u an t i t y s h a l l b e r o u n d e d b e f o r e p e r f o r mi n g t h e mu l t i p l i c a t i o n , b e c a u s e a c c u r a c y w o u l d b e r e d u c e d . F o r c o n v e r t i n g i n c h e s ( i n ) t o mi l l i me t e r s ( mm) , w h i c h w o u ld g e n e r a lly b e th e c a s e in d r a w in g s , th e r u le o f th u mb is to r o u n d t o o n e l e s s d e c i ma l p l a c e t h a n t h e o r i g i n a l i n c h d i me n s i o n . W h e n c o n v e r t i n g f r o m mi l l i me t e r s t o i n c h e s , t h e r u l e i s t o r o u n d t o t w o mo r e de c i ma l p l a c e s t h a n t h e o r i g i n a l v a lu e . E x a mp l e : C o n v e r t 3 . 5 7 4 8 i n c h e s t o mi l l i me t e r s . 3.5748 x 25.4 = 90.79992

A n s w e r : 9 0 . 8 0 0 mm

E x a mp l e : C o n v e r t 1 . 6 2 5 i n c h e s t o mi l l i me t e r s . 1.625 x 25.4 = 41.275

A n s w e r : 4 1 . 2 8 mm

E x a mp l e : C o n v e r t 1 0 1 . 8 3 mi l l i me t e r s t o i n c h e s . 1 0 1 . 8 3 /2 5 . 4 = 4 . 0 0 9 0 5 5 1 1 8 A n s w e r : 4 . 0 0 9 1 in c h e s b . Ro u n d in g Ba s ic D ime n s io n s T o c o n v e r t b a s ic d ime n s io n s o f d r a w in g s f r o m in c h e s to mi l l i me t e r s , t h e c o n v e r t e d v a l u e s h a l l b e r o u n d e d t o t h r e e d e c i ma l p l a c e s s i n c e t h i s s h al l p r o v i d e a ma x i mu m c o n v e r s i o n e r r o r o f 0 . 0 0 0 0 2 in c h . I n c o n v e r tin g b a s ic d ime n s io n s f r o m mi l l i me t e r s t o i n c h e s , t h e v a l u e s h a l l b e r o u n d e d t o f i v e d e c i ma l p l a c e s , g i v i n g a ma x i mu m c o n v er s i o n e r r o r o f 0 . 0 0 0 0 0 5 i n c h .

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91

Ro u n d in g T o le r a n c e d D ime n s io n s T h e u s e o f t h e e x a c t r e l a t i o n 1 i n c h = 2 5 . 4 mi l l i me t e r s g e n e r a l l y p r o d u c e s mo r e th a n th e r e q u ir e d n u mb e r o f s ig n if ic a n t d ig its . T o r o u n d b o th th e d ime n s io n a n d th e to le r a n c e s , f ir s t c o n v e r t th e v a lu e s to th e n e c e s s a r y u n its . W h e n c o n v e r tin g f r o m in c h e s t o mi l l i me t e r s , mu l t i p l y b y 2 5 . 4 f o r a p r o d u c t ; w h e n c o n v e r t i n g f r o m mi l l i me t e r s t o i n c h e s , d i v i d e b y 2 5 . 4 f o r a q u o t i e n t . N e x t , take the total tolerance (i.e., the total value between the ma x imu m a n d min imu m limits ) a n d f r o m th e r e s p e c tiv e ta b le b e l o w f i n d t h e c o r r e c t n u mb e r o f d e c i ma l p l a c e s . T h e n r o u n d b o th th e d ime n s io n a n d th e to le r a n c e s to th e n u mb e r o f d e c ima l p l a c e s i n d i c a t e d . H o w e v e r , c a r e mu s t b e t a k e n s o t h a t t h e r o u n d e d to le r a n c e s f a ll in s id e th e o r ig in a l to le r a n c e v a lu e s a s e x p la in e d in p a r a g r a p h 1 0 . 2 . 2 . 2 . d . , “ P r e c is io n Ro u n d in g , ” o n page 92.

Original Total Tolerance in Inches At Least: 0.4 & over 0.04 0.004 0.0004 0.00004

But Less Than: 0.4 0.04 0.004 0.0004

Round Product To: Whole mm 0.X mm 0.XX mm 0.XXX mm 0.XXXX mm

Original Total Tolerance in Millimeters At Least: 2.0 & over 0.2 0.02 0.002

But Less Than: 2.0 0.2 0.02

Round Quotient To: 0.XX in 0.XXX in 0.XXXX in 0.XXXXX in

E x a mp l e : C o n v e r t 1 . 3 8 7 ± 0 . 0 0 3 i n c h e s t o mi l l i me t e r s . 1.387 x 25.4 = 35.2298;

0.003 x 25.4 = 0.0762

35.2298 ± 0.0762 T h e to ta l o r ig in a l to le r a n c e is 0 . 0 0 6 , w h ic h lie s b e tw e e n 0 . 0 0 4 a n d 0 . 0 4 , a n d a c c o r d i n g t o t h e f ir s t t a b l e , s h o u l d b e r o u n d e d t o 0 . X X mi l l i me t e r . A n s w e r : 3 5 . 2 3 ± 0 . 0 8 mm

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d . P r e c is io n Ro u n d in g ( I n s id e ) W h e n c o n v e r t e d , t o l e r a n c e s mu s t n e v e r e x c e e d t h e o r i g i n a l l y s p e c if ie d limits ( a s in th e c a s e w h e r e th e “ c o n v e r te d ” p a r ts a r e to b e in s p e c te d b y g a g e s ma d e f o r th e o r ig in a l p a r ts ) . T h e r o u n d - o f f mu s t b e s u c h th a t th e n e w d ime n s io n s s h a ll lie in s id e t h e o r i g i n a l t o l e r a n c e l i mi t s . T h i s ma y b e a c c o mp l i s h e d b y c o n v e r tin g th e ma x imu m a n d min imu m limits e x a c tly, a n d th e n r o u n d in g th e u p p e r limit to th e n e x t lo w e r v a lu e a n d r o u n d in g t h e l o w e r l i mi t t o t h e n e x t h ig h e r v a l u e . E x a mp l e : C o n v e r t

0 . 8 7 7 f r o m i n c h e s t o mi l l i me t e r s w i t h o u t 0.874 v io la t i o n o f t h e o r i g i n a l l i mi t s : 0.877 x 25.4 = 22.2758;

0.874 x 25.4 = 22.1996

T h e to ta l o r ig in a l to le r a n c e is 0 . 0 0 3 , w h ic h lie s b e tw e e n 0 . 0 0 0 4 and 0.004 and, according to the preceding table, should be r o u n d e d t o 0 . X X X mi l l i me t e r s . Answer:

2 2 . 2 7 5 mm 2 2 . 2 0 0 mm

N o t e t h a t 2 2 . 2 7 5 8 i s n o t r o u n d e d t o 2 2 . 2 7 6 mm b e c a u s e i t w o u l d violate the “inside” rule.

10.3.

Design References a.

F i n i s h e s o f M e t a l a n d W o o d S u r f a c e s : M I L - S T D - 1 7 1 . R e f e r e n c e d o c u me n t ( f o r a w o r k in g k n o w le d g e ) : MI L - H D BK - 1 3 2 A .

b . G e a r s /G e a r Cla s s if ic a tio n a n d I n s p e c tio n H a n d b o o k T o le r a n c e s a n d Me a s u r in g Me th o d s f o r U n a s s e mb le d S p u r a n d H e lic a l G e a r s ( in c lu d in g me tr ic e q u iv a le n ts ) : A G MA 2 0 0 0 - A - 8 8 . c.

G e a r Cla s s if ic a tio n , Ma te r ia ls , a n d Me a s u r in g Me th o d s f o r Be v e l, H yp o id , F in e P itc h W o r mg e a r in g , a n d Ra c k s O n ly a s U n a s s e mb le d G e a r s : A G MA 3 9 0 . 0 3 A - 8 8 .

d . O p tic s /G e n e r a l S p e c if ic a tio n G o v e r n in g th e Ma n u f a c tu r e , A s s e mb ly, a n d I n s p e c tio n o f O p tic a l Co mp o n e n ts f o r F ir e Co n tr o l I n s tr u me n ts : MI L - O - 1 3 8 3 0 . e.

S o ld e r in g /G e n e r a l S p e c if ic a tio n f o r S o ld e r in g P r o c e s s ( f o r n o n e le c tr ic a l a p p lic a tio n s ) : MI L - S - 6 8 7 2 .

f.

S p r in g s /D r a w in g Re q u ir e me n ts f o r Me c h a n ic a l S p r in g s : MI L - S T D - 2 9 .

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10.4.

93

Control of Surface Roughness 10.4.1.

Surface Texture Surface texture, surface roughness, waviness, and lay shall be in accordance with ANSI B46.1-1985 (or later revisions). The s ymb o ls b e lo w a r e e x a mp le s o f mic r o in c h f in is h s ymb o ls a n d th e ir mic r o me t e r e q u i v a l e n t s t h a t a r e mos t c o mmo n l y u s e d . R e f e r t o t h e A N S I B4 6 . 1 - 1 9 8 5 f o r f u r th e r d a ta s u c h a s w a v in e s s a n d la y. Me tr ic e q u iv a le n ts w ith r o u g h n e s s g r a d e n u mb e r s to th e f o llo w in g a r e f o u n d in p a r a g r a p h 1 0 . 2 . 1 c o n p a g e 8 7 .

Mic r o in c h

Mic r o me te r Ro u g h Ma c h in in g . Mating Surfaces. Mo v in g P a r ts . Precision Parts. P o lis h e d P a r ts . L a p p e d P a r ts .

10.4.2.

Surface Texture Symbols S y mb o l s d e p i c t i n g a c c e p t a b l e s u r f a c e c o n d i t i o n s s h a l l b e i n accordance with ANSI Y14.36-1978 (R 1987) (or later revisions).

10.4.3.

Surface Texture Standards Co p ie s o f b o th A N S I B4 6 . 1 - 1 9 8 5 a n d A N S I Y 1 4 . 3 6 - 1 9 7 8 a r e available from A me r i c a n N a t i o n a l S t a n d a r d s I n s t i t u t e 1 4 3 0 Br o a d w a y New York, NY 10018

10.5.

Thread Specifications S c r e w - th r e a d c o n v e n tio n s , me th o d s o f s p e c if yin g , a n d d e s ig n s h a ll b e in accordance with the following specifications: a.

Screw-Thread Standards for Federal Services, Federal Standard F E D - S T D - H 2 8 , d e ta ile d s ta n d a r d s a s f o llo w s :

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F E D - S T D - H 2 8 / 1 N o me n c l a t u r e , D e f i nitio n s , a n d L e tte r S ymb o ls f o r S c r e w Threads. F E D - S T D - H 2 8 / 2 U n i f i e d T h r e a d F o r m an d T h r e a d S e r i e s f o r B o l t s , S c r e w s , N u ts , T a p p e d H o le s , a n d G e n e r a l A p p lic a tio n s . F E D - S T D - H 2 8 /3 U n if ie d T h r e a d s o f S p e c ia l D ia me te r , P itc h e s , a n d L e n g th s o f E n g a g e me n t. F E D - S T D - H 2 8 /4 Co n tr o lle d Ra d iu s Ro o t S c r e w T h r e a d s , U N J S ymb o l. F E D - S T D - H 2 8 /5 U n if ie d Min ia tu r e S c r e w T h r e a d s . F E D - S T D - H 2 8 /6 G a g e s a n d G a g in g f o r U n if ie d S c r e w T h r e a d s . F E D - S T D - H 2 8 /7 A me r ic a n S ta n d a r d P ip e T h r e a d s ( e x c e p t D r y s e a l a n d H o s e Co u p lin g T yp e s ) . F E D - S T D - H 2 8 / 8 D r ys e a l A me r i c a n S ta n d a r d P ip e T h r e a d s . F E D - S T D - H 2 8 /9 G a s C y l i n d e r V a l v e O u t l e t a n d I n l e t T h r e a d s . F E D - S T D - H 2 8 /1 0 A me r ic a n N a tio n a l H o s e Co u p lin g a n d F ir e - H o s e Co u p lin g Threads. F E D - S T D - H 2 8 /1 1 H o s e Co n n e c tio n s f o r W e ld in g a n d Cu ttin g E q u ip me n t. F E D - S T D - H 2 8 / 1 2 A c me T h r e a d s . F E D - S T D - H 2 8 /1 3 S tu b A c me T h r e a d s . F E D - S T D - H 2 8 /1 4 N a tio n a l Bu ttr e s s T h r e a d s . F E D - S T D - H 2 8 /1 5 A me r ic a n S ta n d a r d Ro lle d T h r e a d s f o r S c r e w S h e lls o f E l e c t r i c L a mp H o l d e r s a n d f o r S c r e w S h e l l s o f U n a s s e mb l e d L a mp B a s e s . FED-STD-H28/16 Microscope Objective and Nosepiece Threads, 0.800— 3 6 A MO . F E D - S T D - H 2 8 /1 7 S u r v e yin g I n s tr u me n t Mo u n tin g T h r e a d s . F E D - S T D - H 2 8 /1 8 P h o to g r a p h ic E q u ip me n t T h r e a d s . F E D - S T D - H 2 8 /1 9 Mis c e lla n e o u s T h r e a d s . F E D - S T D - H 2 8 / 2 0 I n s p e c t i o n M e t h o d s f or A c c e p t a b i l i t y o f U N , U N R , U N J , M , and MJ Screw-Threads. F E D - S T D - H 2 8 /2 1 A Me tr ic S c r e w - T h r e a d S ta n d a r d s . F E D - S T D - H 2 8 / 2 2 Me t r i c S c r e w - T h r e a d G a g e s . b . G e n e r a l S p e c i f i c a t i o n f o r S c r e w T h r e a d s , S t a n d a r d , O p t i mu m S e l e c t e d S e r i e s , Military Specification MIL-S-7742.

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95

G e n e r a l Re q u ir e me n ts f o r P ip e T h r e a d s , T a p e r , A e r o n a u tic a l N a tio n a l F o r m, S y mb o l - A N P T , M i l i t a r y S p e c i f i c a t i o n M I L - P - 7 1 0 5 .

d . G e n e r a l S p e c if ic a tio n f o r S c r e w T h r e a d s , Co n tr o lle d Ra d iu s Ro o t W ith I n c r e a s e d M i n o r D i a me t e r , Mi l i t a r y S p e c i f i c a t i o n M I L - S - 8 8 7 9 . e.

Me tr ic S c r e w T h r e a d s M P r o f ile A N S I /A S ME B1 . 1 3 M- 1 9 8 3 .

f.

Me tr ic S c r e w T h r e a d s MJ P r o f ile A N S I B1 . 2 1 M- 1 9 7 8 .

g . S c r e w T h r e a d Re p r e s e n ta tio n s ( Co n v e n tio n s a n d Me th o d s o f S p e c if yin g ) , A me r ic a n N a tio n a l S ta n d a r d A N SI Y 1 4 . 6 - 1 9 7 8 , a n d A N S I Y 1 4 . 6 a M- 1 9 8 1 ( Me tr ic S u p p le me n t) .

10.6.

Welding—Fusion and Resistance 10.6.1.

General T h e s ta n d a r d d e f in itio n f o r th e t e r m “ w e l d ” i s a l o c a l i z e d c o a l e s c e n c e o f me t a l s w h e r e c o a l e s c e n c e i s p r o d u c e d b y h e a t i n g t o s u ita b le te mp e r a tu r e s , w ith o r w ith o u t th e a p p lic a tio n o f p r e s s u r e , a n d w i t h o r w i t h o u t t h e u s e o f f i l l e r me t a l . T h e f i l l e r me t a l e i t h e r h a s a me ltin g p o in t a p p r o x ima te ly th e s a me a s th e b a s e me ta l o r h a s a me ltin g p o in t b e lo w th a t o f th e b a s e me ta l b u t a b o v e 8 0 0 d e g r e e s F . F o r s ta n d a r d w e ld in g s p e c if ic a tio n c a llo u ts , r e f e r to “ J o in in g Me th o d N o te s , ” p a r a g r a p h 2 . 4 . 4 . 3 o n p a g e 1 8 .

10.6.2.

Basic Weld Symbols and Their Location Significance B a s i c w e l d s y mb o l s a n d t h e i r l o c a t i o n s i g n i f i c a n c e s h a l l b e i n accordance with ANSI AWS A 2.4-86 (or later revisions). Copies are available from A me r i c a n W e l d i n g S o c i e t y 2 5 0 1 N W 7 th S tr e e t Mia mi, F L 3 3 1 2 5

10.7.

Outgassing of Spacecraft Materials N A S A Re f e r e n c e P u b lic a tio n , RP - 1 1 2 4 , N o v e mb e r 1 9 9 0 , O u tg a s s in g D a ta fo r S e l e c t i n g S p a c e c r a f t M a t e r i a l s, c o v e r s a w id e r a n g e o f ma te r ia ls , in c lu d in g a d h e s iv e s , c o mp o u n d s , c o a tin g s , in s u la tio n , a n d v a r io u s o th e r ma te r ia ls . A s p r e s e n t e d , t h e d a t a r e p r e s e n t t h e “ t o ta l ma s s l o s s ” ( T M L ) a n d t h e “ C o l l e c t e d Volatile Condensable Materials” (CVCM), as derived from tests at 398 K (125 C) f o r 2 4 h o u r s in v a c u u m p e r A S T M E 5 9 5 - 8 4 . T h e p u b lic a tio n c a n b e p u r c h a s e d a s d o c u me n t n u mb e r N - 8 8 - 1 0 1 1 7 f r o m

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N a tio n a l T e c h n ic a l I n f o r ma t i o n S e r v i c e ( N T I S ) 5 2 8 5 P o r t Ro ya l Ro a d S p r in g f ie ld , V A 2 2 1 5 1

10.8.

Standards and Specifications Index 10.8.1.

National Bureau of Standards NBS IR81-229, A Technical Briefing on the Initial Graphics Exchange Specification (IGES).

10.8.2.

Federal Co mme r c e Co mmis s io n Re g u la tio n 4 9 - CF R7 1 - 7 8 Co mme r c e Co mmis s io n S a f e ty Re g u la tio n s C o mme r c i a l a n d G o v e r n me n t E n t i t y ( C A G E ) P u b l i c a t i o n H 4 / H 8 S e c tio n A : N a me to CA G E Co d e ; S e c tio n B: CA G E Co d e to N a me ( f o r me r l y F S C M H 4 a n d F S C N M H 8 ) . F E D - S T D - H 2 8 /1 , N o me n c la tu r e , D e f in itio n s , a n d L e tte r S ymb o ls for Screw Threads. F E D - S T D - H 2 8 /2 , U n if ie d T h r e a d F o r m a n d T h r e a d S e r ie s f o r Bo lts . F E D - S T D - H 2 8 /3 , U n if ie d T h r e a d s o f S p e c i a l D i a me t e r , P i t c h e s , a n d L e n g th s o f E n g a g e me n t. F E D - S T D - H 2 8 /4 , Co n tr o lle d Ra d iu s Ro o t S c r e w T h r e a d s , U N J S ymb o l. F E D - S T D - H 2 8 /5 , U n if ie d Min ia tu r e S c r e w T h r e a d s . F E D - S T D - H 2 8 /6 , G a g e s a n d G a g in g f o r U n if ie d S c r e w T h r e a d s . F E D - S T D - H 2 8 /7 , A me r ic a n S ta n d a r d P i p e T h r e a d s ( e x c e p t D r y s e a l a n d H o s e Co u p lin g T yp e s . F E D - S T D - H 2 8 / 8 , D r ys e a l A me r i c a n S t a n d a r d P i p e T h r e a d s . F E D - S T D - H 2 8 /9 , G a s C y l i n d e r V a l v e O u t l e t a n d I n l e t T h r e a d s . F E D - S T D - H 2 8 /1 0 , A me r ic a n N a tio n a l H o s e Co u p lin g a n d F ir e Hose. F E D - S T D - H 2 8 /1 1 , H o s e Co n n e c tio n s f o r W e ld in g a n d Cu ttin g E q u ip me n t. F E D - S T D - H 2 8 / 1 2 , A c me T h r e a d s . F E D - S T D - H 2 8 /1 3 , S tu b A c me T h r e a d s . F E D - S T D - H 2 8 /1 4 , N a tio n a l Bu ttr e s s T h r e a d s .

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F E D - S T D - H 2 8 /1 5 , A me r ic a n S ta n d a r d Ro lle d T h r e a d s f o r S c r e w S h e l l s f o r E l e c t r i c L a mp H o l d e r s & U n a s s e mb l e d L a mp B a s e s . FED-STD-H28/16, Microscope Objective and Nosepiece Threads. F E D - S T D - H 2 8 /1 7 , S u r v e yin g I n s tr u me n t Mo u n tin g T h r e a d s . F E D - S T D - H 2 8 /1 8 , P h o to g r a p h ic E q u ip me n t T h r e a d s . F E D - S T D - H 2 8 /1 9 , Mis c e lla n e o u s T h r e a d s . FED-STD-H28/20, Inspection Methods for Acceptability of UN, U N R , U N J , M, a n d MJ S c r e w - T h r e a d s . F E D -S T D -H 2 8 /2 1 , Me tr ic S c r e w - T h r e a d S ta n d a r d s . F E D - S T D - H 2 8 / 2 2 , Me t r i c S c r e w - T h r e a d G a g e s . F E D -S T D -5 9 5 , Co lo r s . Q Q - B- 6 5 4 , Br a z in g A llo ys , S ilv e r . Q Q - C- 3 2 0 , Ch r o miu m P la tin g ( E le c tr o d e p o s ite d ) . Q Q - P - 3 5 , P a s s iv a tio n T r e a tme n ts f o r Co r r o s io n - Re s is ta n t S te e l. Q Q - P - 4 1 6 , P la tin g , Ca d miu m ( E le c tr o d e p o s ite d ) . Q Q - S - 3 6 5 , S ilv e r P la tin g ( E le c tr o d e p o s ite d ) , G e n e r a l Re q u ir e me n ts for. Q Q - S - 5 7 1 , S o ld e r , T in A llo y, T in - L e a d A llo y, a n d L e a d A llo y. S a f e ty Re g u la tio n s 4 9 - CF R7 1 - 7 8 , Co mme r c e Co mmis s io n S a f e ty Re g u la tio n s .

10.8.3.

Industrial A G MA 3 9 0 . 0 3 A - 8 8 , G e a r Cla s s if ic a tio n a n d I n s p e c tio n H a n d b o o k T o le r a n c e s a n d Me a s u r in g Me th o d s f o r Be v e l, H yp o id , F in e P itc h W o r mg e a r in g , a n d Ra c k s . A G MA 2 0 0 0 - A - 8 8 , G e a r Cla s s if ic a tio n a n d I n s p e c tio n H a n d b o o k T o le r a n c e s a n d Me a s u r in g Me th o d s f o r U n a s s e mb le d S p u r a n d H e lic a l G e a r s ( I n c lu d in g Me tr ic E q u iv a le n ts ) . A MS 2 4 8 8 , A n o d ic T r e a tme n t o f T ita n iu m a n d T ita n iu m A llo ys . A N S I A W S A 2 . 4 - 1 9 8 6 , S ymb o ls f o r W e ld in g a n d N o n d e s tr u c tiv e T e s tin g . A N S I /A S ME B1 . 1 3 M- 1 9 8 3 , Me tr ic S c r e w T h r e a d s M P r o f ile . A N S I B1 . 2 1 M- 1 9 7 8 , Me tr ic S c r e w T h r e a d s MJ P r o f ile .

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A N S I B4 . 2 - 1 9 7 8 , P r e f e r r e d Me tr ic L imits a n d F its . A N S I B4 . 3 - 1 9 7 8 G e n e r a l T o le r a n c e s f o r Me tr ic D ime n s io n e d P r o d u c ts . ANSI B46.1-1985, Surface Texture (Surface Roughness, Waviness, a n d L a y) . A N S I Y 1 4 . 1 5 - 1 9 6 6 ( R- 7 3 ) , E le c tr ic a l a n d E le c tr o n ic s D ia g r a ms . A N S I Y 1 4 . 1 5 a - 1 9 7 1 , I n te r c o n n e c tio n D ia g r a ms . A N S I Y 1 4 . 1 5 b - 1 9 7 3 , E le c tr ic a l a n d E le c tr o n ic s D ia g r a ms . A N S I Y 1 4 . 2 M- 1 9 7 9 , L in e Co n v e n tio n s a n d L e tte r in g . A N S I Y 1 4 . 2 6 M- 1 9 8 7 , D ig ita l Re p r e s e n ta tio n f o r Co mmu n ic a tio n o f Product Definition Data. A N S I Y 1 4 . 3 6 - 1 9 7 8 ( R 1 9 8 7 ) , S u r f a c e T e x t u r e S y mb o l s . A N S I Y 1 4 . 5 M- 1 9 8 2 , D ime n s io n in g a n d T o le r a n c in g . A N S I Y 1 4 . 6 - 1 9 7 8 , S c r e w T h r e a d Re p r e s e n ta tio n . A N S I Y 1 4 . 6 A M- 1 9 8 1 , S c r e w T h r e a d Re p r e s e n ta tio n ( Me tr ic S u p p le me n t) . ANSI Y32.2-1975, IEEE STD 315-1975, CSA Z99-1975, Graphic S y mb o l s f o r E l e c t r i c a l an d E l e c t r o n i c s D i a g r a ms . A N S I Y 3 2 . 9 - 1 9 7 2 , G r a p h ic S ymb o ls f o r E le c tr ic a l W ir in g a n d L a yo u t D i a g r a ms U s e d i n A r c h i t e c t u r e a n d B u i l d i n g Co n s tr u c tio n . A S T M D 4 1 2 6 , V a p o r D e g r e a s in g . A S T M E 3 8 0 - 9 1 a , S ta n d a r d P r a c tic e f o r U s e o f th e I n te r n a tio n a l S y s t e m o f U n i t s ( T h e M o d e r n i z e d M e t r i c S y s t e m) . A S T M E 5 9 5 - 8 4 , S ta n d a r d T e s t Me th o d f o r T o ta l Ma s s L o s s a n d C o l l e c t e d V o l a t i l e C o n d e n s i b l e M at e r i a l s F r o m O u t g a s s i n g i n a V a c u u m E n v ir o n me n t. N - 8 8 - 1 0 1 1 7 , N a tio n a l T e c h n ic a l I n f o r ma tio n S e r v ic e —O u tg a s s in g Data for Selecting Spacecraft Materials. N A S 1 0 0 0 0 , N A D o c u me n ts P r e p a r a tio n a n d Ma in te n a n c e in S I ( Me t r i c ) U n i t s .

10.8.4.

Military D O D - S T D - 1 8 6 6 , S o ld e r in g S p e c if ic a tio n .

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MI L - A - 8 6 2 5 , A n o d ic Co a tin g s , f o r A lu min u m a n d A lu min u m Alloys. MI L - B- 7 8 8 3 , Br a z in g o f S te e ls , Co p p e r , Co p p e r A llo ys , N ic k e l A llo ys , A lu min u m, a n d A lu min u m A llo ys . MI L - C- 5 5 4 1 , Ch e mic a l Co n v e r s io n Co a tin g s o n A lu min u m a n d A lu min u m A llo ys . MI L - C- 1 2 9 6 8 , Co a tin g s , P h o s p h a te , P r o te c tiv e . MI L - C- 1 3 9 2 4 , Co a tin g , O x id e , Bla c k , f o r F e r r o u s Me ta ls . MI L -D -5 4 8 0 , D a ta , E n g in e e r in g a n d T e c h n ic a l, Re p r o d u c tio n R e q u i r e me n t s f o r . MI L - H - 6 0 8 8 , H e a t T r e a tme n t o f A lu min u m A llo ys . MI L - H - 6 8 7 5 , H e a t T r e a tme n t o f S te e l, P r o c e s s e s f o r . M I L - H - 7 1 9 9 , H e a t T r e a t me n t o f W r o u g h t C o p p e r - B e r y l l i u m A l l o y s , Process for. MI L - H D BK - 1 3 2 A , P r o te c tiv e F in is h e s f o r Me ta l a n d W o o d Surfaces. MI L - I - 4 5 9 3 2 /1 , I n s e r t, S c r e w T h r e a d - T h in W a ll, L o c k e d in . MI L - L - 4 6 0 1 0 , L u b r ic a n t, S o lid F ilm, H e a t Cu r e d , Co r r o s io n . MI L -M-9 8 6 8 , Mic r o f ilmin g o f E n g in e e r in g D o c u me n ts , 3 5 MM, R e q u i r e me n t s f o r . MI L - N - 4 5 9 3 8 /1 , N u t, P la in , Clin c h ( S e lf - Clin c h in g , Ro u n d ) . MI L - O - 1 3 8 3 0 , O p tic a l Co mp o n e n ts f o r F ir e Co n tr o l I n s tr u me n ts ; G e n e r a l S p e c if ic a tio n G o v e r n in g th e Ma n u f a c tu r in g , A s s e mb ly, a n d I n s p e c tio n o f . MI L - P - 1 1 6 , P r e s e r v a tio n , Me th o d s o f . MI L -P -7 1 0 5 , P ip e T h r e a d s , T a p e r , A e r o n a u tic a l N a tio n a l F o r m, S ymb o l A N P T , G e n e r a l Re q u ir e me n t f o r . MI L - R- 2 8 0 0 2 , Ra s te r G r a p h ic s Re p r e s e n ta tio n in Bin a r y F o r ma t, R e q u i r e me n t s f o r . MI L -S -6 8 7 2 , G e n e r a l S p e c if ic a tio n f o r S o ld e r in g P r o c e s s ( n o n electrical). MI L -S -7 7 4 2 , S c r e w T h r e a d s , S T D , O p timu m S e le c te d S e r ie s , General Specification for.

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MI L -S -8 8 7 9 , S c r e w T h r e a d s , Co n tr o lle d Ra d iu s Ro o t W ith I n c r e a s e d M i n o r D i a me t e r ; G e n e r a l S p e c i f i c a t i o n f o r . MI L -S T D -1 2 , A b b r e v ia tio n s . MI L -S T D -2 9 , D r a w in g Re q u ir e me n ts f o r Me c h a n ic a l S p r in g s . MI L - S T D - 1 0 0 , E n g in e e r in g D r a w in g P r a c tic e s . M I L -S T D -1 7 1 , F i n i s h e s o f M e t a l a n d W o o d S u r f a c e s . MI L - S T D - 4 0 3 , P r e p a r a tio n f o r a n d I n s ta lla tio n o f Riv e ts a n d Screws, Rocket and Missile Structures. MI L -S T D -0 0 4 5 3 , Ra d io g r a p h ic I n s p e c tio n . MI L - S T D - 6 4 5 , D ip Br a z in g o f A lu min u m A llo ys . MI L -S T D -2 1 5 4 , U ltr a s o n ic I n s p e c tio n . M I L -S T D -2 2 1 9 , F u s i o n W e l d i n g f o r A e r o s p a c e A p p l i c a t i o n s . MI L - T - 7 1 3 , T w in e , F ib r o u s ; I mp r e g n a te d , L a c in g a n d T yin g . MI L - W - 4 6 1 3 2 , E le c tr o n ic Be a m W e ld in g . MS 3 3 5 3 7 , I n s e r t, S c r e w T h r e a d , H e lic a l Co il, Co a r s e a n d F in e T h r e a d , S ta n d a r d D ime n s io n s f o r . MS 5 1 8 3 5 , I n s e r ts a n d S tu d s , L o c k e d I n - K e y L o c k e d , H o le D ime n s io n s f o r a n d A s s e mb ly o f .

10.8.5.

NASA G S F C 7 3 1 - 0 0 0 5 - 8 3 , G e n e r a l F r a c tu r e Co n tr o l P la n f o r P a ylo a d s Using the Space Transportation System (STS). G S F C- G H B- 2 2 0 0 . 2 , S c ie n tif ic a n d T e c h n ic a l I n f o r ma tio n Handbook. G S F C S - 2 5 0 - 3 , G u id e f o r th e P r e p a r a tio n o f S p e c if ic a tio n s . G S F C S - 3 1 3 - 0 0 9 , F lu o r e s c e n t P e n e tr a n t T e s t Me th o d Re q u ir e me n ts and Guidelines. G S F C S - 3 1 3 - 1 0 0 , G S F C F a s te n e r I n te g r ity Re q u ir e me n ts . G S F C- S T D - 2 5 6 - W E - 1 , F o r Y o u r I n f o r ma tio n , A Co mp e n d iu m o f G e n e r a l Re f e r e n c e D a ta f o r T e c h n ic a l W r itin g a n d E d itin g . G S F C X - 6 7 3 - 6 4 - 1 F , G S F C E n g in e e r in g S ta n d a r d s D e s ig n Ma n u a l. N A S A Re f e r e n c e P u b lic a tio n RP - 1 1 2 4 , N o v e mb e r 1 9 9 0 , O u tg a s s in g Data for Selecting Spacecraft Materials.

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N H B 5 3 0 0 . 4 ( 3 A - l) 1 9 7 6 , Re q u ir e me n ts f o r S o ld e r e d E le c tr ic a l Co n n e c tio n s . N MI 8 0 1 0 2 A , U s e o f th e Me tr ic S ys te m o f Me a s u r e me n t in N A S A P r o g r a ms . N S T S 0 7 7 0 0 , S ys te m D e s c r ip tio n a n d D e s ig n D a ta , I n te r v e h ic u la r Activities.

10.9.

Standards and Specifications Numerical Index Specification

Page

A G MA 2 0 0 0 - A - 8 8 , G e a r Cla s s if ic a tio n a n d I n s p e c tio n H a n d b o o k T o le r a n c e s a n d Me a s u r in g Me th o d s f o r U n a s s e mb le d S p u r a n d H e lic a l G e a r s ( I n c lu d in g Me tr ic E q u iv a le n ts ) .

92

A G MA 3 9 0 . 0 3 A - 8 8 , G e a r Cla s s if ic a tio n Ma te r ia ls a n d Me a s u r in g Me th o d s f o r Be v e l, H yp o id , F in e P itc h W o r mg e a r in g , a n d Ra c k s .

92

A MS 2 4 8 8 , A n o d ic T r e a tme n t o f T ita n iu m a n d T ita n iu m Alloys.

19

A N S I A W S A 2 . 4 - 8 6 , S ymb o ls f o r W e ld in g a n d N o n d e s tr u c tiv e T e s tin g .

95

A N S I B1 . 2 1 M- 1 9 7 8 , Me tr ic S c r e w T h r e a d s MJ P r o f ile

95 Page

Specification A N S I B4 . 2 - 1 9 7 8 , P r e f e r r e d Me tr ic L imits a n d F its .

89

ANSI B46.1-1985, Surface Texture (Surface Roughness, W a v in e s s , a n d L a y) .

93

A N S I Y 1 4 . 1 5 - 1 9 6 6 ( R- 7 3 ) , E le c tr ic a l a n d E le c tr o n ic s D ia g r a ms .

43

A N S I Y 1 4 . 1 5 a - 1 9 7 1 , I n te r c o n n e c tio n D ia g r a ms .

43

A N S I Y 1 4 . 1 5 b - 1 9 7 3 , E le c tr ic a l a n d E le c tr o n ic s D ia g r a ms .

43

A N S I Y 1 4 . 2 M- 1 9 7 9 , L in e Co n v e n tio n s a n d L e tte r in g .

35

A N S I Y 1 4 . 2 6 M- 1 9 8 7 , D ig ita l Re p r e s e n ta tio n f o r Co mmu n ic a tio n o f P r o d u c t.

84

A N S I Y 1 4 . 3 6 - 1 9 7 8 ( R 1 9 8 7 ) , S u r f a c e T e x t u r e S y mb o l s .

93

A N S I Y 1 4 . 5 M- 1 9 8 2 , D ime n s io n in g a n d T o le r a n c in g . 1, 7, 16, 28, 85, 87, 107, 108

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A N S I Y 1 4 . 6 - 1 9 7 8 , S c r e w T h r e a d Re p r e s e n ta tio n .

95

A N S I Y 1 4 . 6 a M- 1 9 8 1 , S c r e w T h r e a d Re p r e s e n ta tio n ( Me tr ic S u p p le me n t) .

95

ANSI Y32.2-1975, IEEE STD 315-1975, CSA Z99-1975, G r a p h i c S y mb o l s f o r E l e c t r i c a l a n d E le c tr o n ic D ia g r a ms .

43

A N S I Y 3 2 . 9 - 1 9 7 2 , G r a p h ic S ymb o ls f o r E le c tr ic a l W ir in g a n d L a yo u t D ia g r a ms U s e d in A r c h ite c tu r e a n d Bu ild in g Co n s tr u c tio n .

43

A N S I /A S ME B1 . 1 3 M- 1 9 8 3 , Me tr ic S c r e w T h r e a d s M P r o f ile

95

A S T M D 4 1 2 6 , V a p o r D e g r e a s in g .

20

A S T M E 3 8 0 - 9 1 a , S ta n d a r d P r a c tic e f o r U s e o f th e International System of Units (The Modernized Metric S ys te m) .

86

A S T M E 5 9 5 - 8 4 , S ta n d a r d T e s t Me th o d f o r T o ta l Ma s s L o s s and Collected Volatile Condensible Materials From O u tg a s s in g in a V a c u u m E n v ir o n me n t.

95

Co mme r c e Co mmis s io n Re g u la tio n 4 9 - CF R7 1 - 7 8 , Co mme r c e Co mmis s io n S a f e ty Re g u la tio n s .

22

C o mme r c i a l a n d G o v e r n me n t E n t i t y ( C A G E ) P u b l i c a t i o n H 4 /H 8 .

7, 72, 75 Page

Specification D O D - S T D - 1 8 6 6 , S o ld e r in g S p e c if ic a tio n .

18

F E D - S T D - 5 9 5 , Co lo r s

19

F E D - S T D - H 2 8 /1 , N o me n c la tu r e , D e f in itio n s , a n d L e tte r S ymb o l s f o r S c r e w T h r e a d s .

93

F E D - S T D - H 2 8 /2 , U n if ie d T h r e a d F o r m a n d T h r e a d S e r ie s f o r Bo lts , S c r e w s , N u ts , T a p p e d H o le s , a n d G e n e r a l A p p lic a tio n s .

93

F E D - S T D - H 2 8 / 3 , U n i f i e d T h r e a d s o f S p e c i a l D i a me t e r , P itc h e s , a n d L e n g th s o f E n g a g e me n ts .

93

F E D - S T D - H 2 8 /4 , Co n tr o lle d Ra d iu s Ro o t S c r e w T h r e a d s , U N J S ymb o l.

93

F E D - S T D - H 2 8 /5 , U n if ie d Min ia tu r e S c r e w T h r e a d s .

93

F E D - S T D - H 2 8 /6 , G a g e s a n d G a g in g f o r U n if ie d S c r e w Threads.

93

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F E D - S T D - H 2 8 / 7 , A me r i c a n S t a n d a r d P ip e T h r e a d s ( e x c e p t D r ys e a l a n d H o s e Co u p lin g T yp e s ) .

93

F E D - S T D - H 2 8 /8 , D r ys e a l A me r ic a n S ta n d a r d P ip e T h r e a d s .

93

F E D - S T D - H 2 8 /9 , G a s C y l i n d e r V a l v e O u t l e t a n d I n l e t Threads.

93

F E D - S T D - H 2 8 /1 0 , A me r ic a n N a tio n a l H o s e Co u p lin g a n d F ir e - H o s e Co u p lin g T h r e a d s .

93

F E D - S T D - H 2 8 /1 1 , H o s e Co n n e c tio n s f o r W e ld in g a n d Cu ttin g E q u ip me n t.

93

F E D - S T D - H 2 8 /1 2 , A c me T h r e a d s .

93

F E D - S T D - H 2 8 /1 3 , S tu b A c me T h r e a d s .

93

F E D - S T D - H 2 8 /1 4 , N a tio n a l Bu ttr e s s T h r e a d s .

93

F E D - S T D - H 2 8 /1 5 , A me r ic a n S ta n d a r d Ro lle d T h r e a d s f o r S c r e w S h e l l s o f E l e c t r i c L amp H o l d e r s a n d f o r S c r e w S h e l l s o f U n a s s e mb l e d L a mp B a s e s .

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FED-STD-H28/16, Microscope Objective and Nosepiece T h r e a d s , 0 . 8 0 0 - 3 6 A MO .

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F E D - S T D - H 2 8 /1 7 , S u r v e yin g I n s tr u me n t Mo u n tin g T h r e a d s .

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F E D - S T D - H 2 8 /1 8 , P h o to g r a p h ic E q u ip me n t T h r e a d s .

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Specification F E D - S T D - H 2 8 /1 9 , Mis c e lla n e o u s T h r e a d s .

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FED-STD-H28/20, Inspection Methods for Acceptability of U N , U N R , U N J , M, a n d MJ S c r e w - T h r e a d s .

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F E D - S T D - H 2 8 /2 1 A , Me tr ic S c r e w - T h r e a d S ta n d a r d s .

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F E D - S T D - H 2 8 /2 2 , Me tr ic S c r e w - T h r e a d G a g e s .

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G S F C 7 3 1 - 0 0 0 5 - 8 3 , G e n e r a l F r a c tu r e Co n tr o l P la n f o r Payloads Using the Space Transportation System (STS).

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G S F C S - 2 5 0 - 3 , G u id e f o r th e P r e p a r a tio n o f S p e c if ic a tio n s .

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G S F C S - 3 1 3 - 0 0 9 , F lu o r e s c e n t P e n e tr a n t T e s t Me th o d Re q u ir e me n ts a n d G u id e lin e s .

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G S F C S - 3 1 3 - 1 0 0 , G S F C F a s te n e r I n te g r ity Re q u ir e me n ts .

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G S F C S T D - 2 5 6 - W E - 1 , F o r Y o u r I n f o r ma tio n — A Co mp e n d iu m O f G e n e r a l Re f e r e n c e D a ta .

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G S F C X - 6 7 3 - 6 4 - 1 F , G S F C E n g in e e r in g D r a w in g S ta n d a r d s Manual. iii, 16, 21 MI L - A - 8 6 2 5 , A n o d ic Co a tin g s , f o r A lu min u m a n d A lu min u m Alloys.

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MI L - B- 7 8 8 3 , Br a z in g o f S te e ls , Co p p e r , Co p p e r A llo ys , N ic k e l A llo ys , A lu min u m, a n d A lu min u m A llo ys .

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MI L - C- 5 5 4 1 , Ch e mic a l Co n v e r s io n Co a tin g s o n A lu min u m a n d A lu min u m A llo ys .

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MI L - C- 1 2 9 6 8 , Co a tin g s , P h o s p h a te , P r o te c tiv e .

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MI L - C- 1 3 9 2 4 , Co a tin g , O x id e , Bla c k , f o r F e r r o u s Me ta ls . MI L - D - 5 4 8 0 , D a ta , E n g in e e r in g a n d T e c h n ic a l, Re p r o d u c tio n Re q u ir e me n ts f o r . MI L - H - 6 0 8 8 , H e a t T r e a tme n t o f A lu min u m A llo ys .

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MI L - H - 6 8 7 5 , H e a t T r e a tme n t o f S te e l, P r o c e s s e s f o r .

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M I L - H - 7 1 9 9 , H e a t T r e a t me n t o f W r o u g h t C o p p e r - B e r y l l i u m A l l o ys , P r o c e s s f o r .

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MI L - H D BK - 1 3 2 A , P r o te c tiv e F in is h e s f o r Me ta l a n d W o o d Surfaces.

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Specification MI L - I - 4 5 9 3 2 /1 , I n s e r t, S c r e w T h r e a d - T h in W a ll, L o c k e d In.

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MI L - L - 4 6 0 1 0 , L u b r ic a n t, S o lid F ilm, H e a t Cu r e d , Co r r o s io n . 2 0 , 1 0 9 MI L - M- 9 8 6 8 , Mic r o f ilmin g o f E n g in e e r in g D o c u me n ts , 3 5 mm, Re q u ir e me n ts f o r .

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MI L - N - 4 5 9 3 8 /1 , N u t, P la in , Clin c h ( S e lf - Clin c h in g , Ro u n d ) .

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MI L - O - 1 3 8 3 0 , O p tic a l Co mp o n e n ts f o r F ir e Co n tr o l I n s tr u me n ts ; G e n e r a l S p e c if ic a tio n G o v e r n in g th e Ma n u f a c tu r in g , A s s e mb ly, a n d I n s p e c tio n o f .

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MI L - P - 1 1 6 , P r e s e r v a tio n , Me th o d s o f .

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MI L - P - 7 1 0 5 , P ip e T h r e a d s , T a p e r , A e r o n a u tic a l N a tio n a l F o r m, S ymb o l A N P T , G e n e r a l Re q u ir e me n ts f o r .

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MI L - R- 2 8 0 0 2 , Ra s te r G r a p h ic s Re p r e s e n ta tio n in Bin a r y F o r ma t , R e q u i r e me n t s f o r .

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MI L - S - 7 7 4 2 , S c r e w T h r e a d s , S T D , O p timu m S e le c te d Series, General Specification for.

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MI L - S - 8 8 7 9 , S c r e w T h r e a d s , Co n tr o lle d Ra d iu s Ro o t w ith Increased Minor.

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MI L - S T D - 0 0 4 5 3 , Ra d io g r a p h ic I n s p e c tio n .

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MI L - S T D - 1 2 , A b b r e v ia tio n s .

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MI L - S T D - 1 0 0 E , E n g in e e r in g D r a w in g P r a c tic e s . MIL-STD-171, Finishes of Metal and Wood Surfaces.

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MI L - S T D - 2 1 5 4 , U ltr a s o n ic I n s p e c tio n .

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MIL-STD-2219, Fusion Welding for Aerospace A p p lic a tio n s .

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MI L - S T D - 2 9 , D r a w in g Re q u ir e me n ts f o r Me c h a n ic a l S p r in g s .

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MI L - S T D - 4 0 3 , P r e p a r a tio n f o r a n d I n s ta lla tio n o f Riv e ts a n d Screws, Rocket and Missile Structures.

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Specification MI L - T - 7 1 3 , T w in e , F ib r o u s ; I mp r e g n a te d , L a c in g a n d T yin g .

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MI L - W - 4 6 1 3 2 , E le c tr o n ic Be a m W e ld in g .

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MS 3 3 5 3 7 , I n s e r t, S c r e w T h r e a d , H e lic a l Co il, Co a r s e a n d F in e T h r e a d , S ta n d a r d D ime n s io n s f o r .

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MS 5 1 8 3 5 , I n s e r ts a n d S tu d s , L o c k e d I n - K e y L o c k e d , H o le D ime n s io n s f o r a n d A s s e mb ly o f .

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N - 8 8 - 1 0 1 1 7 , N a tio n a l T e c h n ic a l I n f o r ma tio n S e r v ic e — O u t g a s s i n g D a t a C o mp i l a t i o n o f S p a c e c r a f t M a t e r i a l s .

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N A S 1 0 0 0 0 , N A D o c u me n ts P r e p a r a tio n a n d Ma in te n a n c e in S I ( Me t r i c ) U n i t s .

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N A S A Re f e r e n c e P u b lic a tio n , RP - 1 1 2 4 , N o v e mb e r 1 9 9 0 , O u t g a s s i n g D a t a f o r S e l e c t in g S p a c e c r a f t M a t e r i a l s . NBS IR81-229, A Technical Briefing on the Initial Graphics Exchange.

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N H B 5 3 0 0 . 4 ( 3 A - 1 ) 1 9 7 6 , Re q u ir e me n ts f o r S o ld e r e d E le c tr ic a l Co n n e c tio n s .

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N MI 8 0 1 0 . 2 A , U s e o f th e Me tr ic S ys te m o f Me a s u r e me n t in N A S A P r o g r a ms .

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N S T S 0 7 7 0 0 , S ys te m D e s c r ip tio n a n d D e s ig n D a ta , Intervehicular Activities.

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Q Q - B- 6 5 4 , Br a z in g A llo ys , S ilv e r .

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Q Q - C- 3 2 0 , Ch r o miu m P la tin g ( E le c tr o d e p o s ite d ) .

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Q Q - P - 3 5 , P a s s iv a tio n T r e a tme n ts f o r Co r r o s io n - Re s is ta n t Steel.

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Q Q - P - 4 1 6 , P la tin g , Ca d miu m ( E le c tr o d e p o s ite d ) .

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Q Q - S - 3 6 5 , S ilv e r P la tin g ( E le c tr o d e p o s ite d ) , G e n e r a l Re q u ir e me n ts f o r .

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Q Q - S - 5 7 1 , S o ld e r , T in A llo y, T in - L e a d A llo y, a n d L e a d Alloy.

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S a f e ty Re g u la tio n s 4 9 - CF R7 1 - 7 8 , Co mme r c e Co mmis s io n S a f e ty Re g u la tio n s .

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APPENDIX A. DESIGN REVIEW DOs AND DON'Ts A ll d r a w in g s s h o u ld a d h e r e to th e f o llo w in g g u id e lin e s : a.

D i m e n s i o n p a r t s c o r r e c t l y . D ime n s io n in g s h a ll b e to p r ima r y o r ma tin g s u r f a c e s . U n w a n t e d b u i l d u p o f t o l e r a nc e s b e t w e e n ma t i n g s u r f a c e s s h o u l d b e a v o id e d . D i me n s i o n s t o i n s i g n if i c a n t t h e o r e t i c a l c e n t e r l i n e s c a n r e s u l t i n mis t a k e s b y t h e ma c h i n i s t , a s w e l l a s t h e i n s p e c t o r s , b e c a u s e o f t h e mu l t i p l e a d d itio n s a n d s u b tr a c tio n s r e q u ir e d to lo c a te th e f e a tu r e in r e la tio n to o th e r f e a tu r e s . W h e n e v e r p o s s ib le , d ime n s io n s s h o u ld b e le f t to r ig h t a n d b o tto m to t o p ( Q u a d r a n t I , a l l p o s i t i v e n u mb e r s ) o r f r o m d a t u ms e s t a b l i s h e d b y d e s i g n r e q u ir e me n ts .

b . D o n o t d e t a i l w e l d m e n t p a r t s s e p a r a t e l y . S i n c e e a c h p a r t ma y b e f a b r i c a t e d b y a d if f e r e n t ma n u f a c tu r e r , th e r e q u ir e d to le r a n c in g typ ic a lly c a n n o t b e me t, r e s u ltin g in d e la ys a n d a d d itio n a l c o s t. D if f e r e n t p a r ts o f a w e ld me n t s h o u ld b e d r a w n o n a n I n s e p a r a b le A s s e mb ly D r a w in g ( F ig u r e 2 0 o n p a g e 4 4 ) s o th a t t h e o v e r a l l a s s e mb l y t o l e r a n c i n g i s t h e r e s p o n s i b i l i t y o f a s i n g l e ma n u f a c t u r e r . c.

I m p l i e d d a t u m s a r e n o l o n g e r a l l o w e d . W h e n e v e r p o s s i b l e , s e l e c t d a t u ms th a t a r e f u n c tio n a l to th e p a r t. A d a tu m s h o u ld a lw a ys b e a s s ig n e d to a p h y s i c a l s u r f a c e o r a f e a t u r e o f s i z e . W h e n u s i n g t r u e p o s i t i o n d i me n s i o n i n g ( b a s ic d ime n s io n s ) , th e d ime n s io n s f r o m th e f e a tu r e to o th e r e d g e s a n d its p e r p e n d i c u l a r i t y r e l a t i o n s h i p t o a s ur f a c e mu s t b e i d e n t i f i e d w i t h d a t u m le tte r s . T h e c o mb in e d u s a g e o f p o s itio n a l to le r a n c in g w ith p lu s a n d min u s me t h o d s a s r e l a t e d t o b a s i c d i me n s i o n ed p a t t e r n s i s d i s c o n t i n u e d a n d r e p l a c e d w ith th e c o mp o s ite to le r a n c in g me th o d . Re f e r to A N S I Y 1 4 . 5 M- 1 9 8 2 , “ D ime n s io n in g a n d T o le r a n c in g . ” Note: A l t h o u g h t h e r e i s n o r e q u i r e me n t t h a t a l l h o l e s b e t r u e p o s i t i o n e d , i t i s p r e f e r r e d th a t h o le p a tte r n s b e tr u e p o s itio n e d , r e g a r d le s s o f u s e , s in c e to le r a n c in g s p e c if ie d in th e tr u e p o s itio n b lo c k is th e c o n tr o llin g f a c to r .

d. Drawings for parts produced using templates must be properly d i m e n s i o n e d a n d t o l e r a n c e d . L a c k o f d ime n s io n in g ma y r e s u lt in in a d e q u a te s tr e s s a n a lys is , f it c h e c k in g , a n d /o r in s p e c tio n . E n g in e e r in g a n d to o lin g d r a w in g s s h o u ld b e d ime n s io n e d a lik e a n d r e la te d to o n e a n o th e r . Re f e r to to o lin g r e q u ir e d n o te s in “ D ime n s io n N ote s , ” p a r a g r a p h 2 . 4 . 4 . 1 o n p a g e 1 6 . e.

U s e t h e l i s t o f m a t e r i a l f o r m a t c o r r e c t l y . T h e a s s e mb ly n u mb e r d o e s n o t g e t a n i t e m n u mb e r . W h i l e t h e ma t e r i a l i s p r o p e r l y a n i t e m o n t h e L i s t o f Ma te r ia l, o n e n d p r o d u c t d r a w in g s , th e r e is n o n e e d to s p e c if y e ith e r th e d r a w in g n u mb e r o r a n ite m n u mb e r in th e L is t o f Ma te r ia l if th e r e is o n ly o n e p a r t o r ma t e r i a l . A n i t e m w i t h t h e s a me ma t e r i a l a n d s p e c i f i c a t i o n r e q u ir e s o n ly o n e i t e m n u mb e r a n d “ A / R ” ( a s r e q u ir e d ) a s a q u a n t i t y . T h e v a r i o u s ma t e r i a l s i z e s r e q u i r e d a r e i n d i c a t e d o n t h e f i e l d o f t h e d r a w i n g , a s i s t h e c a s e o f in s e p a r a b le a s s e mb lie s ( w e ld me n ts , r iv e te d p a r ts , e tc . ) . D a s h n u mb e r s a r e r e q u ir e d o n ly w h e n th e r e is a “ s h o w n ” ( o d d n u mb e r ) a n d “ o p p o s ite ” ( e v e n n u mb e r ) , w h e n th e r e is mo r e th a n o n e a s s e mb ly v e r s io n , o r w h e n th e d r a w in g i s o f a t a b u la t e d t y p e ( r e f e r t o t y p e s o f d r a w i n g s ) . M u l t i d e t a i l d r a w i n g s a r e n o t a l l o w e d ( r e f e r t o “ D e t a i l D r a w in g , ” p a r a g r a p h 4 . 3 o n p a g e 4 1 f o r e x p la n a tio n ) .

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f.

D o n o t u s e “ S K ” ( s h o r t f o r s k e t c h ) o n a n y d r a win g t h a t is u s e d t o m a n u f a c t u r e a p a r t . U s e o n ly G S F C d r a w in g n u mb e r s w h e n u s in g th e G S F C d r a w in g f o r ma t; c o n tr a c to r d r a w in g n u mb e r s a r e u s e d o n th e c o n tr a c to r 's d r a w i n g f o r ma t . T h e M e c h a n ic a l E n g in e e r in g Br a n c h d o e s n o t c h e c k o r g iv e a p p r o v a l f o r d r a w in g s p r o d u c e d o n c o n tr a c to r f o r ma t. Co n tr a c ts s h o u ld s p e c if y th a t th e c o n tr a c to r s h a ll s u p p ly c o p ie s o f c o mp a n y s p e c if ic a tio n s w h e n u s in g c o n tr a c to r f o r ma ts .

g . S p e c i f y l o w - o u t g a s s i n g m a t e r i a l s . U s e lo w - o u tg a s s in g f ilm lu b r ic a n ts f o r s p a c e f l i g h t h a r d w a r e w h e r e d i s a s s e mb l y i s l i k e l y a n d / o r g a l l i n g o f l i k e ma te r ia ls is p o s s ib le . Re f e r to N A S A RP - 1 1 2 4 , N o v e mb e r 1 9 9 0 ( o r la te r ) , O u t g a s s i n g D a t a f o r S e l e c t i n g S p a c e c r a f t M a t e r i a l s , o r to S e c tio n 1 0 , p a r a g r a p h 1 0 . 6 . 1 , p a g e 9 5 o f t h i s ma n u a l , “ O u t g a s s i n g o f S p a c e c r a f t Materials.” h . S p e c i f y t h e i d e n t i f i c a t i o n o f p a r t s . T o ma i n t a i n t r a c e a b i l i t y , a l l p a r t s s h o u l d b e id e n tif ie d b y in k s ta mp in g w ith th e G S F C d r a w in g n u mb e r , r a th e r th a n b y b a g g in g a n d ta g g in g . U s e o n ly lo w - o u tg a s s in g in k ( s p e c if y o r ig in a l s o u r c e ) a n d d o n o t o v e r c o a t. D o n o t s te e l s ta mp e n g r a v e , o r e tc h o n f lig h t h a r d w a r e t o p r e v e n t ma t e r i a l s t r e s s c o n c e n t r a t i o n s. I d e n t i c a l p a r t s w i t h d i f f e r e n t u s e s s h o u ld b e s e r ia liz e d . i.

Specify the original manufacturer source of supply and complete address. L i s t t h e o r i g i n a l s o u r c e a n d c o mp l e t e a d d r e s s i n t h e G e n e r a l N o t e s , a n d f l a g them to the List of Material or Parts List.

j.

S p e c if y r e g a r d le s s o f f e a t u r e s ize wh e n a p p ly in g t o f ix e d lo c a t io n s . Positional tolerance should be specified as “Regardless of Feature Size” when a p p lyin g to th r e a d in s e r ts , ta p p e d h o le lo c a tio n s , a n d s lip f it d e s ig n s .

k . S p e c i f y l o o s e t o l e r a n c e s w h e r e p o s s i b l e . T h e u s e o f th e tr u e p o s itio n me th o d o f d ime n s io n in g s h o u ld n o t b e mis ta k e n f o r a tig h te r to le r a n c in g c o n tr o l s ys te m. T r u e p o s itio n to le r a n c in g c a n b e a s lo o s e a s th e a p p lic a tio n s h a ll a l l o w . L o o s e t o l e r a n c e s ma k e i n s pe c t i o n e a s i e r a n d a l l o w f e w e r r e j e c t e d p a r ts . l.

S p e c i f y r a d i i a n d c h a m f e r s . E d g e r a d ii, in - p la n e c o r n e r r a d ii, a n d p r o tr u s io n c h a mf e r s mu s t b e s p e c i f i e d t o s p a c e f l ig h t s t a n d a r d s i z e r eq u i r e me n t s . R e f e r t o J o h n s o n S p a c e C e n t e r d o c u me n t N S T S 0 7 7 0 0 , V o l u me X I V , A p p e n d i x 9 , “ S y s t e m D e s c r i p t i o n a n d D e s i g n D a t a I n t e r v e h i c u la r A c t i v i t i e s , ” S e c t i o n 5 . 5 , “ C r e w E q u i p me n t S a f e t y, ” f o r s i z e r e q u i r eme n ts . S p e c i f y r a d i i a t t h e b o t t o m o f c o u n te r b o r e s to p r e v e n t s h a r p c o r n e r s , w h ic h c o u ld d e v e lo p in to s tr e s s c r a c k s , p a r tic u la r ly o n f lig h t p a r ts .

m. S p e c i f y i n t e r f e r e n c e r a n g e o n l y f o r p r e s s f i t s . O n ly th e a mo u n t “ . 0 0 0 X to . 0 0 0 X i n t e r f e r e n c e ” s h o u l d b e s t a te d n e x t t o t h e i t e m c a l l o u t . n . S p e c i f y a s f e w r e f e r e n c e d i m e n s i o n s a s p o s s i b l e . T o o ma n y r e f e r e n c e d ime n s io n s ma k e c h e c k in g , in s p e c tio n , a n d c o s t e s tima tin g mo r e d if f ic u lt. o . S p e c i f y p r o j e c t e d t o l e r a n c e zo n e d i m e n s i o n s w h e r e a p p l i c a b l e . A d d a p r o j e c te d to le r a n c e z o n e d ime n s io n to th e tr u e p o s itio n to le r a n c e w h e n s p e c if yin g th r e a d e d in s e r ts , ta p p e d h o le s , o r d o w e l p in s . Re f e r to A N S I Y 1 4 . 5 M- 1 9 8 2 .

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p . S p e c i f y f a s t e n e r t o r q u e r e q u i r e m e n t s . T h e s e r e q u i r e me n t s ma y r e f e r t o a p r o j e c t- d e v e lo p e d s p e c if ic a tio n n u mb e r , o r f a s te n e r s iz e a n d to r q u e r e q u ir e me n ts c a n b e ta b u la te d in th e G e n e r a l N o te s a n d f la g g e d to ite m c a llo u ts in th e f ie ld o f th e d r a w in g . q . A v o i d d o u b l e f i x a t i o n s . A p a tte r n o f c o u n te r s u n k h o le s in o n e p a r t a n d ta p p e d h o le s in th e ma tin g p a r t le a v e s n o to le r a n c in g f o r e ith e r p a r t, r e s u ltin g in b e n d in g s tr e s s e s in th e s c r e w . I f th e s itu a tio n s h a ll a llo w , c o u n te r b o r e o n e of the parts and use a pan head screw. If not, drill out the second part and use a n u t i n p l a c e o f t a p p e d h o l e s . M a t c h ed d r i l l i n g s h o u l d b e a v o i d e d b e c a u s e o f loss of interchangeability. r.

A v o i d s e v e r e g a l l i n g b e t w e e n l i k e m a t e r i a l s . T o a v o id s e v e r e g a llin g in CRES-to-CRES fastener applications, consider the following possibilities: U s e o f p h o s p h o r b r o n z e in s e r ts . U s e o f d r y f ilm lu b r ic a n t p e r MI L - G - 4 6 0 1 0 , L u b r ic a n t, S o lid F ilm, H e a t Cu r e d , Co r r o s io n I n h ib itin g ( f o r CRE S in s e r ts a n d n u ts ) . U s e o f b la c k o x id e c o a tin g p e r MI L - C- 1 3 9 2 4 ( f o r b o lts a n d s c r e w s ) .

s.

Avoid the use of internal, external, or split-ring lock washers. These types of washers are not used on aerospace flight projects for several reasons; the w o r s t is p o s s ib le p a r tic u la te c o n ta min a tio n .

t.

Avoid using silver-plated hardware around electronic applications. This c a n c a u s e c o n t a mi n a t i o n p a r t i c l e s . H o w e v e r , i t i s a c c e p t a b l e f o r a l l o t h e r a p p lic a tio n s .

u. Design a part so it can be made with the least amount of machine setups possible.

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INDEX F o r a n a lp h a b e tic a l ( n u me r ic a l) lis tin g o f th e S ta n d a r d s a n d S p e c if ic a tio n s lis te d in th is ma n u a l, s e e S e c tio n 1 0 . 9 , p a g e 1 0 1 .

A

D

Abbreviations ............................... 11, 12 AFBMA ............................................. 12 AGMA .............................................. 12 AGMA standard quality....................... 16 A l t e r e d p a r t s . . . . . . . . . . . . . . . . s e e P a r ts — V e n d o r Altered vendor part drawings ................... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . s e e D r a w in g s ANSI ................................................ 12 Archiving .......................................... 80 ASME ............................................... 12 A s s e mb l y d r a w i n g s . . . . . . . . . . . . . . s e e D r a w in g s Associated lists .................................. 80 ASTM ............................................... 13 AWS ............................................ 13, 92 B B a s i c d i me n s i o n s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . s e e D ime n s io n in g — T r u e p o s itio n Brazing ............................................. 18 C C A D . . . . . . . . . . . . . . . s e e Co mp u te r - a id e d d e s ig n C A D - p r o d u c e d d r a w i n g s . . . . . . s e e D r a w in g s Certification logs ............................... 80 C h a mf e r s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 0 5 Coating Notes .......................... see Notes C o mp o s i t e ma t e r i a l d r a w i n g . . . . . . . . . . . . . . . . 5 6 C o mp u t e r - a i d e d d e s i g n . . . . . . . . . . . . . . . . . . . 3 3 , 8 0 . . . . s e e a l s o Drawings—Computer-aided design Data files Media .......................................... 81 Presentation of data ......................... 80 Specification data ............................ 81 C o mp u t e r - g e n e r a t e d d a t a Presentation of ................................ 80 C o n f i g u r a t i o n ma n ag e me n t o f f i c e r . . . . . . . . 5 8 C o n f i g u r a t i o n ma n a g e r . . . . . . . . . . . . . . . . . . . 5 8 , 8 0 C o n t r a c t o r d e s i g n a ct i v i t y d r a w i n g s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . s e e D r a w in g s C o n v e r s i o n o f d i me n s i o n s . . . . . . . . . . . . . . . . . . . 8 6 C r o s s - h a t c h i n g s y mb o l . . . . . . . . . . . . . . . . . . . . . . . . 3 5

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Datum ..................................... 30, 45, 82 I mp l i e d . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 0 4 Design references ................................ 82 D e s i g n r e v i e w D o s a n d D o n 't s . . . . . . . . . . . . 1 0 4 Design Selection Guide ........................ 14 D e t a i l d r a w i n g s . . . . . . . . . . . . . . . . . . . s e e D r a w in g s Details ............................................... 37 Identification ................................... 37 Locating .......................................... 38 D i a g r a ms Electrical and electronic ................... 43 D i me n s i o n n o t e s . . . . . . . . . . . . . . . . . . . . . . . . s e e N o t e s D i me n s i o n a l t o l e r a n c e n o t e s . . . . . . . s e e N o t e s D ime n s io n in g M e t r i c . . . . . . . . . . . . . s e e Me tr ic d ime n s io n in g S t a t e me n t s o n . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 2 True position .................... 82, 104, 105 D ime n s io n in g a n d to le r a n c in g . . 8 2 , 8 4 , 1 0 4 Metric ............................................. 83 Practices ......................................... 82 D i me n s i o n s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ... 15, 16, 24, 25, 28, 55, 82, 84, 88, 104 Conversion of .................................. 86 Projected tolerance zone ................. 106 Reference ...................................... 105 D o c u me n t a t i o n ma n a g e me n t . . . . . . . . . . . . . . . . . . 7 9 Double fixations ............................... 106 Drafting practices ............................... 25 D r a w i n g e l e me n t s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Drawing flow chart............ see Flow chart D r a w i n g f o r ma t . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 0 Drawing Interchange File ..................... 81 Drawing notes ...........................see Notes D r a w i n g n u mb e r . . . . . . . . . . 1 , 7 , 1 0 , 4 1 , 5 8 , 6 0 Source control ................................. 53 Specification control ........................ 54 D r a w i n g r e v i s i o n s . . . . . . . . . . . . . . . s e e Re v is io n s Drawing sizes ...................................... 3 Drawing title ...................................... 11 Drawing tree ....................................... 42 D r a w in g s Archiving ........................................ 80 A s s e mb l y . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 0 , 5 3 , 5 4 CAD-produced .................................. 8 C o mp u t e r - a i d e d d e s i g n . . . . . . . . . . . . . . . . . . . . . . 8 0

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Developing and using .................... 81 Revisions ..................................... 80 Contractor design activity .................. 1 Detail ............................................. 41 E l e c t r i c a l / E le c t r o n i c . . . . . . . . . . . . . . . . . . . . . . . . 4 3 Engineering .................... 1, 16, 58, 104 F o r ma t . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 0 G o v e r n me n t D e s i g n A c t i v i t y . . . . . . . . . . . . . . . 1 I n s e p a r a b l e a s s e mb l y . . . . . . . . . . . . . . . . . . . . . . . 4 4 I n s t a l l a t i o n a s s e mb l y . . . . . . . . . . . . . 4 5 , 5 3 , 5 4 Interface control ......................... 46, 47 Manufacturing ................................. 54 Matched-set .................................... 48 M e c h a n i c a l s c h e ma t i c . . . . . . . . . . . . . . . . . . . . . . 4 9 Modification ................................... 50 Mo n o d e t a i l . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 4 Multidetail ...................................... 41 Multisheet .................... 3, 4, 15, 38, 65 Notes ................................... see Notes N u mb e r i n g s y s t e m . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 8 One view ........................................ 25 Outline .................................50, 51, 54 Pencil............................................. 33 Positioning ..................................... 33 Redrawn or replaced ........................ 67 Scale .............................................. 32 Source control ............................ 52, 53 Specification control ..............52, 53, 54 Standard part .................................. 54 Tabulated ....................................... 54 Three view ...................................... 25 Tooling ................................8, 55, 104 Two view ........................................ 25 Types of ......................................... 39 Vendor part Altered ........................................ 39 Selected ....................................... 39 Zoned .......................................... 4, 38 D X F . . . . . . . . . . . . s e e D r a w in g I n te r c h a n g e F ile

111

EFFECTIVE SERIAL ........................ 63 EO NO. ........................................... 63 F o r ma t s a mp l e . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 2 G e n e r a l r e q u i r e me n t s . . . . . . . . . . . . . . . . . . . . . . . . 6 2 INITIATED ..................................... 63 ISSUED BY ..................................... 63 NEXT ASSEMBLY ........................... 62 N u mb e r . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 4 PARTS IN PROCESS ........................... . . . . s e e E n g in e e r in g o r d e r — D is p o s itio n PROGRAM ...................................... 62 REASON ......................................... 62 REV ................................................ 62 REVIEWED ..................................... 63 S H E E T ___O F ___ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 3 TITLE ............................................. 62 TYPE OF EO ................................... 63 USED ON ........................................ 62 Engineering parts list ........... see Parts list E O . . . . . . . . . . . . . . . . . . . . . . . . . s e e E n g in e e r in g o r d e r E P L . . . . . . . . . . . . . . . . s e e P a r ts lis t— E n g in e e r in g F Fastener torque ................................. 106 Federal Cataloging Program ................. 54 F e d e r a l I t e m I d e n t i f i c a t i o n N u mb e r . . . . . . . 5 4 Federal standards and specifications ...... 93 FIIN ..................................................... . s e e F e d e r a l I t e m I d e n t i f i c a t i o n N u mb e r F i n d n u mb e r . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 4 A p p l i c a t i o n a n d l i mi t a t i o n . . . . . . . . . . . . . . . . . 7 6 Definition ........................................ 76 D r a w i n g r e q u i r e me n t s . . . . . . . . . . . . . . . . . . . . . . . 7 7 System of identification .................... 76 F i n d o r I t e m n u mb e r . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . s e e e i t h e r F in d n u mb e r o r I te m n u mb e r F i n d o r i t e m n u mb e r i n g . . . . . . s e e N u mb e r in g Flow chart For drawings .................................... 79

E E l e c t r i c a l a n d e l e c tr o n i c d i a g r a ms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . s e e D i a g r a ms E l e c t r i c a l a n d e l e c tr o n i c s y mb o l s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . s e e S ymb o ls E l e c t r i c a l / e l e c t ro n i c d r a w i n g s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . s e e D r a w in g s E n g i n e e r i n g d r a w i n g s . . . . . . . . . . s e e D r a w in g s Engineering order .......................... 62, 64 APPROVED .................................... 63 Archiving ....................................... 80 DESCRIPTION ................................ 63 Disposition ..................................... 63 DRAWING...................................... 62

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G Galling ............................................ 106 G o v e r n me n t D e s i g n A c t i v i t y D r a w i n g s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . s e e D r a w in g s H Heat treating notes ....................see Notes I IEEE .................................................. 13 IGES.....................................................

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. . . . . . . . . . . . . . . . . . . . . . . . . . . . . s e e I n i t i a l G r a p h ic s ........................ Exchange Specification I L . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . s e e I n d e x lis t Index list ........................................... 68 Continuation sheet ........................... 75 Entries ........................................ 74 F o r ma t . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 4 Cover sheet ..................................... 69 Entries ................................... 69, 70 F o r ma t . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 9 Definitions ..................................... 68 Re q u ir e me n ts A d d i n g i t e ms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 9 D e l e t i n g i t e ms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 9 L i s t f o r ma t s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 9 List preparation ............................ 68 Revision identification .................. 69 I n d u s tr ia l s ta n d a r d s a n d s p e c if ic a tio n s . . 9 5 I n f o r ma t i o n M a n a g eme n t D i v i s i o n . . . . . . . . 5 8 I n f o r ma t i o n a l n o t e s . . . . . . . . . . . . . . . . . . s e e N o t e s I n i t i a l G r a p h ic s E x c h a n g e S p e c i f i c a t i o n 8 1 Ink lines ................................... see Lines I n s e p a r a b l e a s s e mb l y d r a w i n g s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . s e e D r a w in g s Inseparable parts ....................... see Parts Inside rounding ...................................... . . . . . . . . . . . . . . . . . . . s e e Me tr ic d ime n s io n in g — ........................... Rounding—Precision Inspection notes ....................... see Notes I n s t a l l a t i o n a s s e mb l y d r a w i n g s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . s e e D r a w in g s I n t e r f a c e c o n t r o l d r a w i n g s . . . . s e e D r a w in g s Interference range ............................. 105 International System of Units .................. ..................................................... 83 . . . . . . . . . . . . . . . . . . . . . . s e e a l s o 'S I ' a n d 'Me t r i c ' Introduction ......................................... 1 ISO ................................................... 13 I t e m n u mb e r . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 4 A p p l i c a t i o n a n d l i mi t a t i o n . . . . . . . . . . . . . . . . 7 6 Definition ....................................... 76 D r a w i n g r e q u i r e me n t s . . . . . . . . . . . . . . . . . . . . . . 7 7 System of identification ................... 76 I t e m n u mb e r i n g . . . . . . . . . . . . . . . . . s e e N u mb e r in g J J roll size ............................................ 3 J o i n i n g me t h o d n o t e s . . . . . . . . . . . . . . . . s e e N o t e s L Lay (of a surface) ............................... 90 L e t t e r i n g a n d N u me r a l s . . . . . . . . . . . . . . . . . . . . . . . 3 1 Heights........................................... 32

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Style ............................................... 31 Library Services Branch ....................... 58 Lines ................................................. 25 Conventions ............................... 26, 27 Ink ................................................. 25 Pencil ............................................. 27 Plotted ............................................ 25 Types ........................................ 26, 27 Break ........................................... 28 Center .......................................... 27 Cutting-plane ................................ 30 Datum .......................................... 30 D i me n s i o n . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 8 Extension ..................................... 30 Hidden ......................................... 30 Leaders ........................................ 28 Outlines ....................................... 30 Phantom ....................................... 29 Sectioning .................................... 29 Stitch ........................................... 30 Viewing-plane ............................... 30 Visible ......................................... 30 List of Material ......................... 8, 10, 14 Entries ............................................ 78 F o r ma t . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 8 , 1 0 4 R e q u i r e me n t s i n . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 4 LM ........................... see List of Material Local character notes .................see Notes Lock washers .................................... 106 L o w - o u t g a s s i n g ma t e r i a l s . . . . . . . . . . . . . . . . . . . 1 0 5 M M a t c h e d - s e t d r a w i n g s . . . . . . . . . . s e e D r a w in g s M a t e r ia l Conventions ..................................... 35 Low-outgassing .............................. 105 Outgassing....................................... 93 Mechanical Engineering Branch ............ 58 M e c h a n i c a l s c h e ma t i c d i a g r a m d r a w i n g s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . s e e D r a w in g s Metric .................................... see also SI Me tr ic d ime n s io n in g Ro u n d in g B a s i c d i me n s i o n s . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 7 General rules ................................ 86 Precision ................................ 88, 89 T o l e r a n c e d d i me n s i o n s . . . . . . . . . . . . . . . . . . . 8 8 Unit conversions .............................. 86 Metric system ..................................... 83 M i l i t a r y s t a n d a r d s an d s p e c i f i c a t i o n s . . . . . 9 6 M o d i f i c a t i o n d r a w i n g s . . . . . . . . . s e e D r a w in g s M u l t i s h e e t d r a w i n g s . . . . . . . . . . . . s e e D r a w in g s

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N NAS .................................................. 13 NASA standards and specifications ...... 98 National Bureau of Standards index ...... 93 NEMA ............................................... 13 N o me n c l a t u r e . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 1 Notes ................................................ 25 Coating .......................................... 18 D i me n s i o n . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 6 D i me n s i o n a l t o l e r a n c e . . . . . . . . . . . . . . . . . . . . . . 2 4 E x a mp l e s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 6 General .......................................... 15 Heat treating ................................... 17 I n f o r ma t i o n a l . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 3 Inspection ....................................... 20 J o i n i n g me t h o d . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 8 Local character .......................... 15, 23 Location ......................................... 15 Miscellaneous ................................. 21 N u mb e r i n g o f . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 6 Plating ........................................... 18 Surface preparation.......................... 19 Testing ........................................... 20 Threaded inserts Cleaning and installation ............... 21 Warning note .................................. 15 NSA .................................................. 13 NTIS ................................................. 93 N u mb e r i n g . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 8 Find ............................................... 60 Item ............................................... 60 Parts .............................................. 59 N u mb e r i n g o f n o t e s . . . . . . . . . . . . . . . . . . s e e N o t e s

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N u mb e r i n g . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 9 Separable ........................................ 40 Vendor ................................. 52, 53, 59 Altered ................................... 39, 59 Selected ................................. 39, 59 W e l d me n t . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 0 4 Parts list ...................................... 14, 68 Continuation sheet ............................ 73 Entries ......................................... 72 F o r ma t . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 2 S u p p l e me n t a r y h e a d i n g l i s t . . . . . . . . . . . . . 7 3 Co v e r s h e e t Entries ................................... 69, 70 F o r ma t . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 9 Definitions ...................................... 68 Engineering .......................... 59, 60, 80 Preferred ......................................... 14 Re q u ir e me n ts A d d i n g i t e ms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 9 D e l e t i n g i t e ms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 9 L i s t f o r ma t s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 9 List preparation ............................. 68 Revision identification ................... 69 P e n c i l d r a w i n g s . . . . . . . . . . . . . . . . . . s e e D r a w in g s Pencil lines .............................. see Lines Picturization ....................................... 33 PL ...................................... see Parts list Plating notes.............................see Notes Plotted lines ............................. see Lines Positioning ................................... 33, 35 Precision rounding ................................. . . . . . . s e e Me tr ic d ime n s io n in g — Ro u n d in g Press fits .......................................... 105 Projected tolerance zone .................... 106 Projected views ........................ see Views

O Order of precedence...... see Specifications Orthographic projection ...................... 25 Outgassing L o w - o u t g a s s i n g ma t e r i a l s . . . . . . . . . . . . . . . . 1 0 5 O f s p a c e c r a f t ma t e r i a l s . . . . . . . . . . . . . . . . . . . . 9 3 O u t l i n e d r a w i n g s . . . . . . . . . . . . . . . . . s e e D r a w in g s Outlines Invisible ......................................... 34 Visible ........................................... 34 P P a r t n u mb e r . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 2 , 5 9 P a r t P o s i t i o n i n g . . . . . . . . . . . . . . . s e e P o s itio n in g Parts D i me n s i o n s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 0 4 Identification of ............................. 105 Inseparable ..................................... 41

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R Radii ............................................... 105 Regardless of Feature Size ................. 105 Revision block ............................ 4, 9, 65 APPROVAL ...................................... 9 DATE .............................................. 9 DESCRIPTION.................................. 9 S a mp l e s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 , 6 6 SYM ................................................ 9 ZONE .............................................. 9 Revisions ........................................... 65 Identification ................................... 65 Me t h o d s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 5 Multisheet drawings ......................... 65 Recording ........................................ 65 Redrawn or replaced drawings ........... 67 Rotated views .......................... see Views Rounding ........................................... 86

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R o u n d i n g : . . . . s e e a l s o Me tr ic d ime n s io n in g S SAE .................................................. 13 Scale ................................................. 32 Sections ............................................ 34 Identification .................................. 37 Locating ......................................... 38 Security classification ................... 10, 15 S e l e c t e d p a r t s . . . . . . . . . . . . . . s e e P a r ts — V e n d o r S e l e c t e d v e n d o r p ar t d r a w i n g s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . s e e D r a w in g s Separable parts ......................... see Parts S h e e t n u mb e r i n g . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 S I . . . s e e a ls o I n t e r n a t i o n a l S y s t e m o f U n i t s U n i t s a n d s y mb o l s . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 3 Silver-plated hardware ....................... 106 Soldering...................................... 18, 89 S o u r c e c o n t r o l d r a w i n g s . . . . . . . s e e D r a w in g s Space Transportation System ............... 20 Specification callouts ......................... 24 S p e c i f i c a t i o n c o n tr o l d r a w i n g s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . s e e D r a w in g s Specifications .................................... 82 Order of precedence ......................... 60 Subsequent changes ......................... 24 Thread....................................... 91, 92 Specifications index ............................... . . s e e S ta n d a r d s a n d s p e c if ic a tio n s in d e x S t a n d a r d p a r t d r a w i n g . . . . . . . . . . s e e D r a w in g s Standards .......................................... 82 Order of precedence ......................... 60 S t a n d a r d s a n d s p e c i f ic a t i o n s i n d e x . . . . . . . 9 3 Federal ........................................... 93 Industrial........................................ 95 Military .......................................... 96 NASA ............................................ 98 National Bureau of Standards ............ 93 S ta n d a r d s a n d s p e c if ic a tio n s n u me r ic a l index .............................................. 98 STS ....... see Space Transportation System S u p p o r tin g d o c u me n ta tio n N u mb e r i n g . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 8 Surface preparation notes .......... see Notes Surface roughness Control of ....................................... 90 Surface texture ................................... 90 Standards........................................ 90 S y mb o l s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 0 S ymb o ls Cross-hatching ................................ 35 E l e c t r i c a l / E le c t r o n i c . . . . . . . . . . . . . . . . . . . . . . . . 4 3 Welding.......................................... 92 W ir i n g . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 3

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T T a b u l a t e d d r a w i n g s . . . . . . . . . . . . . s e e D r a w in g s T e mp l a t e s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 5 , 8 2 , 1 0 4 Testing notes ............................see Notes Third-angle orthographic projection ...... 25 Thread specifications ..................... 91, 92 Threaded inserts—Cleaning and installation notes ....................see Notes Title block ............................ 4, 9, 32, 33 APPROVED ...................................... 7 CHECKED ........................................ 7 CODE .............................................. 7 DATE .............................................. 7 DESCRIPTION.................................. 9 DESIGNER ....................................... 7 Drawing No. ..................................... 7 DRAWN ........................................... 7 EXAMINATION ................................ 8 FLIGHT HARDWARE ........................ 8 HARDNESS TESTING ....................... 8 ITEM NO. ........................................ 8 MATERIAL ...................................... 9 MATERIAL SPEC. ............................ 9 METRIC ........................................... 8 NEXT ASSY ..................................... 8 PART NO. ........................................ 8 REQD .............................................. 8 S a mp l e . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 SCALE ............................................. 7 S H ___O F ___ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Software used ................................... 8 TITLE .............................................. 7 USED ON ......................................... 7 WT .................................................. 7 T o le r a n c e Blo c k Metric ............................................. 86 Tolerances .................. 24, 82, 84, 88, 104 Loose ............................................ 105 Metric ............................................. 86 T o le r a n c in g True position ................................. 105 T o o l i n g d r a w i n g s . . . . . . . . . . . . . . . . s e e D r a w in g s Tooling fixtures .................................. 55 Transported views .................... see Views T r u e p o s i t i o n d i me n s i o n i n g . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . s e e D ime n s io n in g U U n i t n u mb e r p r i n c i p l e . . . . . . . . . . . . . . . . . . . . . . . . . . 5 8 U n i t r o u n d i n g . . . . . . . . . . . . . . . . . . . . . s e e Ro u n d in g

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V Vapor degreasing ............................... 20 Vendor part .............................. see Parts V e n d o r p a r t d r a w i n g s . . . . . . . . . . . s e e D r a w in g s Views .......................................... 25, 36 Identification .................................. 37 Locating ......................................... 38 Projected ........................................ 36 Rotated........................................... 36 Sectional ........................................ 34 Designation .................................. 35 Positioning .................................. 35 Transported .................................... 36 W Waviness (of a surface) ....................... 90 Welding ............................................ 18 General .......................................... 92 Notes ............................................. 18 Specification callouts....................... 92 S y mb o l s . . . . . . . . . . . . . . . . . . . . . s e e a l s o S ymb o ls Location significance .................... 92 W e l d me n t s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 4 , 1 0 4 W ir i n g s y mb o l s . . . . . . . . . . . . . . . . . . . . s e e S ymb o ls Z Zoning ........................................... 4, 10

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