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1、SAE Technical Standards Board Rules provide that: “This report is published by SAE to advance the state of technical and engineering sciences. The use of this report is entirely voluntary, and its applicability and suitability for any particular use, including any patent infringement arising therefr
2、om, is the sole responsibility of the user.” SAE reviews each technical report at least every five years at which time it may be reaffirmed, revised, or cancelled. SAE invites your written comments and suggestions. SHEET 1 OF 3 AS9821 THIRD ANGLE PROJECTION AEROSPACE STANDARD AS9821 ISSUED 1998-05 R
3、EAFFIRMED 2007-06 BOLT, MACHINE - HEXAGON HEAD, DRILLED, 1 HOLE, PD SHANK, AMS 5643, .500-20 UNJF-3A PREPARED BY COMMITTEE E-25PROCUREMENT SPECIFICATION: NONE FEDERAL SUPPLY CLASS 5306 NOTICE THIS DOCUMENT HAS BEEN TAKEN DIRECTLY FROM U.S. MILITARY SPECIFICATION MS9821, NOTICE 1 AND CONTAINS ONLY MI
4、NOR EDITORIAL AND FORMAT CHANGES REQUIRED TO BRING IT INTO CONFORMANCE WITH THE PUBLISHING REQUIREMENTS OF SAE TECHNICAL STANDARDS. THE INITIAL RELEASE OF THIS DOCUMENT IS INTENDED TO REPLACE MS9821, NOTICE 1. ANY PART NUMBERS ESTABLISHED BY THE ORIGINAL SPECIFICATION REMAIN UNCHANGED. THE ORIGINAL
5、MILITARY SPECIFICATION WAS ADOPTED AS AN SAE STANDARD UNDER THE PROVISIONS OF THE SAE TECHNICAL STANDARDS BOARD (TSB) RULES AND REGULATIONS (TSB 001) PERTAINING TO ACCELERATED ADOPTION OF GOVERNMENT SPECIFICATIONS AND STANDARDS. TSB RULES PROVIDE FOR (A) THE PUBLICATION OF PORTIONS OF UNREVISED GOVE
6、RNMENT SPECIFICATIONS AND STANDARDS WITHOUT CONSENSUS VOTING AT THE SAE COMMITTEE LEVEL, AND (B) THE USE OF THE EXISTING GOVERNMENT SPECIFICATION OR STANDARD FORMAT. UNDER DEPARTMENT OF DEFENSE POLICIES AND PROCEDURES, ANY QUALIFICATION REQUIREMENTS AND ASSOCIATED QUALIFIED PRODUCTS LISTS ARE MANDAT
7、ORY FOR DOD CONTRACTS. ANY REQUIREMENTS RELATING TO QUALIFIED PRODUCTS LISTS (QPLS) HAS NOT BEEN ADOPTED BY SAE AND IS NOT PART OF THIS TECHNICAL REPORT. RATIONALE THIS DOCUMENT HAS BEEN REAFFIRMED TO COMPLY WITH THE SAE 5-YEAR REVIEW POLICY. Copyright 2007 SAE International All rights reserved. No
8、part of this publication may be reproduced, stored in a retrieval system or transmitted, in any form or by any means, electronic, mechanical, photocopying, recording, or otherwise, without the prior written permission of SAE. TO PLACE A DOCUMENT ORDER: Tel: 877-606-7323 (inside USA and Canada) Tel:
9、724-776-4970 (outside USA) Fax: 724-776-0790 Email: CustomerServicesae.org SAE WEB ADDRESS: http:/www.sae.org Copyright SAE International Provided by IHS under license with SAELicensee=Defense Supply Ctr/5913977001 Not for Resale, 12/04/2007 19:13:08 MSTNo reproduction or networking permitted withou
10、t license from IHS -,-,- BOLT, MACHINE - HEXAGON HEAD, DRILLED, 1 HOLE, PD SHANK, AMS 5643, .500-20 UNJF-3A AEROSPACE STANDARD AS9821 SHEET 2 OF 3 AS9821 Copyright SAE International Provided by IHS under license with SAELicensee=Defense Supply Ctr/5913977001 Not for Resale, 12/04/2007 19:13:08 MSTNo
11、 reproduction or networking permitted without license from IHS -,-,- BOLT, MACHINE - HEXAGON HEAD, DRILLED, 1 HOLE, PD SHANK, AMS 5643, .500-20 UNJF-3A AEROSPACE STANDARD AS9821 SHEET 3 OF 3 AS9821 NOTES: 1.SHANK SHALL BE STRAIGHT WITHIN .002 TOTAL PER INCH OF BOLT LENGTH. 2.THE CONCENTRICITY OF THR
12、EAD PD IN RELATION TO THE SHANK SHALL BE WITHIN .006 FIR. 3.THE CONCENTRICITY OF THE SHANK IN RELATION TO THE WASHER FACE DIAMETER AND HEXAGON SHALL BE WITHIN .023 FIR. 4.INCOMPLETE THREADS NOT TO ENTER FILLET. 5.MATERIAL: CORROSION RESISTANT STEEL AMS 5643. 6.HARDNESS: ROCKWELL C32-38. 7.MANUFACTUR
13、ING SPECIFICATION: AMS 7474. 8.FLUORESCENT PENETRANT INSPECTION PER AMS 2645. 9.SURFACE TEXTURE: USAS B46.1-1962. UNLESS OTHERWISE SPECIFIED, SURFACES TO BE 125 MICROINCHES EXCEPT UPSET HEAD. 10.BREAK SHARP EDGES .003-.015 UNLESS OTHERWISE SPECIFIED. 11.DIMENSIONS IN INCHES. UNLESS OTHERWISE SPECIFI
14、ED, TOLERANCES: LINEAR DIMENSIONS .010, ANGULAR DIMENSIONS 5. 12.DO NOT USE UNASSIGNED PART NUMBERS. AS AND AMS ARE SOCIETY OF AUTOMOTIVE ENGINEERS, INC. PUBLICATIONS. THIS STANDARD WAS DEVELOPED COOPERATIVELY WITH THE MILITARY SERVICES BY THE SAE AEROSPACE PART STANDARDS DIVISION. Copyright SAE International Provided by IHS under license with SAELicensee=Defense Supply Ctr/5913977001 Not for Resale, 12/04/2007 19:13:08 MSTNo reproduction or networking permitted without license from IHS -,-,-