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The GSFC Engineering Drawing Standards Manual is the official source for the requirements and interpretations to be used in the development and presentation of engineering drawings and related documentation for the GSFC. The Mechanical Engineering Branch, Mechanical Systems Division, has been delegated the responsibility for interpretation, periodic updates, and distribution of the GSFC Engineering Drawing Standards Manual. All Engineering Directorate design organizations and their contractors shall adhere to the requirements of this manual when preparing GSFC engineering documentation for flight hardware and ground support systems. Comments or inquiries concerning this manual should be directed to the Mechanical Engineering Branch, Code 722.
ENGINEERING DRAWING STANDARDS MANUAL 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 - - - 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 iii iv 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 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 v vi ENGINEERING DRAWING STANDARDS MANUAL vii TABLE OF CONTENTS INTRODUCTION 1 DRAWING ELEMENTS 1.1 Drawing Sizes 1.2 Multisheet Drawings 1.3 Zoning 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 D r a w i n g F o r ma t NOMENCLATURE 11 2.1 Drawing Title 11 2.2 Abbreviations 12 2.3 List of Material 14 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 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 2.4 Notes on Drawings 15 S e c u r i t y C l a s s i f i c at i o n 2.4.2 Note Location 15 N u mb e r i n g o f N o t e s N o t e E x a mp l e s D i me n s i o n N o t e s 2.4.4.2 Heat Treating Notes 17 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 ) 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 I n f o r ma t i o n a l N o t e s 2.4.5 Local Character Notes 23 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 S p e c i f i c a t io n C a l l o u t s 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 D i me n s i o n L i n e s 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 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 L e t t e r i n g a n d N u me r a l s 3.3.1 Style 31 3.3.2 Heights 32 3.4 Scale 32 3.5 Positioning the Part on the Drawing 33 X-673-64-1F 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 ... d ENGINEERING DRAWING STANDARDS MANUAL 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 ENGINEERING DRAWING STANDARDS MANUAL DRAWING. .. a n d x X-673-64-1F ENGINEERING DRAWING STANDARDS MANUAL 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 ENGINEERING DRAWING STANDARDS MANUAL INTRODUCTION... 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