1、AEROSPACE STANDARD BOLT, MACHINE - DOUBLE HEX EXTENDED WASHER HEAD, DRILLED, CLOSE TOL SHANK, AMS5643 (UNS S17400), 140 KSI, .4375-20 UNJF-3A AS3178Copyright 2014 SAE International All rights reserved. No part of this publication may be reproduced, stored in a retrieval system or transmitted, in any
2、 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: +1 724-776-4970 (outside USA) Fax: 724-776-0790 Email: CustomerServicesae.org SAE WEB ADDRESS:
3、http:/www.sae.org ISSUED 1976-03REAFFIRMED 2006-10 REVISED 2014-02THIRD ANGLE PROJECTION CUSTODIAN: E-25 REV.AFEDERAL SUPPLY CLASS AS3178SHEET 1 OF 3REV. APROCUREMENT SPECIFICATION: AS7474 /7/SAE Technical Standards Board Rules provide that: “This report ispublishedby SAE toadvance thestate of techn
4、icalandengineering sciences. Theuse ofthis report is entirely voluntary, andits applicability and suitability forany particular use,including any patent infringement arising therefrom, isthe soleresponsibilityofthe user.”SAE reviews eachtechnicalreport at least every five years at which time itmay b
5、erevised, reaffirmed, stabilized, orcancelled. SAE invites yourwrittencomments andsuggestions. SAE values your input. To provide feedbackon this Technical Report, please visit http:/www.sae.org/technical/standards/AS3178ARATIONALE REVISE THREAD SPECIFICATION TO AS8879. REVISE LIGHTENING HOLE CONFIGU
6、RATION (ADD SECTION VIEW) TO ALLOW OPTIONAL SHAPE AT BOTTOM OF HOLE, DELETE .015 MAX RADIUS AT BASE OF WRENCH PAD, UPDATE FPI REQUIREMENTS, ADD SURFACE FINISH REQUIREMENTS TO BOLT HEAD, ADD MIN. BEARING DIA, DELETE METRIC DIMENSIONS, UPDATE ANSI Y14.5-1973 TO ANSI Y14.5M- 1982, GENERAL EDITORIAL UPD
7、ATE, REFERENCES UDATED AND FIGURE 1 REDRAWN. FIGURE 1 - BOLT AEROSPACE STANDARD AS3178SHEET 2 OF 3REV. ABOLT, MACHINE - DOUBLE HEX EXTENDED WASHER HEAD, DRILLED, CLOSE TOL SHANK, AMS5643 (UNS S17400), 140 KSI, .4375-20 UNJF-3A TABLE 1 PART NUMBERS AND DIMENSIONS PART NO. L GMINKMAXAPPROX. MASSLB/100
8、 PART NO. L GMINKMAXAPPROX. MASSLB/100 AS3178-03 .875- .895 .088 .198 5.99 AS3178-45 3.499-3.519 2.712 2.822 16.97 AS3178-04 .937- .957 .150 .260 6.25 AS3178-46 3.562-3.582 2.775 2.885 17.23 AS3178-05 .999-1.019 .212 .322 6.51 AS3178-47 3.625-3.645 2.838 2.948 17.50 AS3178-06 1.062-1.082 .275 .385 6
9、77 AS3178-48 3.687-3.707 2.900 3.010 17.75 AS3178-07 1.125-1.145 .338 .448 7.04 AS3178-49 3.749-3.769 2.962 3.072 18.02 AS3178-08 1.187-1.207 .400 .510 7.29 AS3178-50 3.812-2.832 3.025 3.135 18.28 AS3178-09 1.249-1.269 .462 .572 7.56 AS3178-51 3.875-3.895 3.088 3.198 18.55 AS3178-10 1.312-1.332 .52
10、5 .635 7.82 AS3178-52 3.937-3.957 3.150 3.260 18.80 AS3178-11 1.375-1.395 .588 .698 8.06 AS3178-53 3.999-4.019 3.212 3.322 19.07 AS3178-12 1.437-1.457 .650 .760 8.34 AS3178-54 4.062-4.082 3.275 3.385 19.33 AS3178-13 1.499-1.519 .712 .822 8.61 AS3178-55 4.125-4.145 3.338 3.448 19.59 AS3178-14 1.562-1
11、582 .775 .885 8.86 AS3178-56 4.187-4.207 3.400 3.510 19.85 AS3178-15 1.625-1.645 .838 .948 9.13 AS3178-57 4.249-4.269 3.462 3.572 20.11 AS3178-16 1.687-1.707 .900 1.010 9.39 AS3178-58 4.312-4.332 3.525 3.635 20.37 AS3178-17 1.749-1.769 .962 1.072 9.65 AS3178-59 4.375-4.395 3.588 3.698 20.64 AS3178-
12、18 1.812-1.832 1.025 1.135 9.91 AS3178-60 4.437-4.457 3.650 3.760 20.90 AS3178-19 1.875-1.895 1.088 1.198 10.18 AS3178-61 4.499-4.519 3.712 3.822 21.16 AS3178-20 1.937-1.957 1.150 1.260 10.43 AS3178-62 4.562-4.582 3.775 3.885 21.42 AS3178-21 1.999-2.019 1.212 1.322 10.70 AS3178-63 4.625-4.645 3.838
13、3.948 21.69 AS3178-22 2.062-2.082 1.275 1.385 10.96 AS3178-64 4.687-4.707 3.900 4.010 21.94 AS3178-23 2.125-2.145 1.338 1.448 11.22 AS3178-65 4.749-4.769 3.962 4.072 22.21 AS3178-24 2.187-2.207 1.400 1.510 11.48 AS3178-66 4.812-4.832 4.025 4.135 22.47 AS3178-25 2.249-2.269 1.462 1.572 11.74 AS3178-6
14、7 4.875-4.895 4.088 4.198 22.73 AS3178-26 2.312-2.332 1.525 1.635 12.00 AS3178-68 4.937-4.957 4.150 4.260 22.99 AS3178-27 2.375-2.395 1.588 1.698 12.26 AS3178-69 4.999-5.019 4.212 4.322 23.24 AS3178-28 2.437-2.457 1.650 1.760 12.53 AS3178-70 5.062-5.082 4.275 4.385 23.51 AS3178-29 2.499-2.519 1.712
15、1.822 12.78 AS3178-71 5.125-5.145 4.338 4.448 23.77 AS3178-30 2.562-2.582 1.775 1.885 13.05 AS3178-72 5.187-5.207 4.400 4.510 24.04 AS3178-31 2.625-2.645 1.838 1.948 13.32 AS3178-73 5.249-5.269 4.462 4.572 24.29 AS3178-32 2.687-2.707 1.900 2.010 13.58 AS3178-74 5.312-5.332 4.525 4.635 24.56 AS3178-3
16、3 2.749-2.769 1.962 2.072 13.83 AS3178-75 5.375-5.395 4.588 4.698 24.82 AS3178-34 2.812-2.832 2.025 2.135 14.10 AS3178-76 5.437-5.457 4.650 4.760 25.08 AS3178-35 2.875-2.895 2.088 2.198 14.36 AS3178-77 5.499-5.519 4.712 4.822 25.34 AS3178-36 2.937-2.957 2.150 2.260 14.62 AS3178-78 5.562-5.582 4.775
17、4.885 25.61 AS3178-37 2.999-3.019 2.212 2.322 14.88 AS3178-38 3.062-3.082 2.275 2.385 15.15 AS3178-39 3.125-3.145 2.338 2.448 15.40 AS3178-40 3.187-3.207 2.400 2.510 15.67 AS3178-41 3.249-3.269 2.462 2.572 15.93 AS3178-42 3.312-3.332 2.525 2.635 16.19 AS3178-43 3.375-3.395 2.588 2.698 16.45 AS3178-4
18、4 3.437-3.457 2.650 2.760 16.71 AEROSPACE STANDARD AS3178SHEET 3 OF 3REV. ABOLT, MACHINE - DOUBLE HEX EXTENDED WASHER HEAD, DRILLED, CLOSE TOL SHANK, AMS5643 (UNS S17400), 140 KSI, .4375-20 UNJF-3A NOTES: /1/ FOR PART NUMBERS AS3178-03 THRU AS3178-11 THE DATUM A SHALL REPLACE DATUM B.2. MATERIAL: CO
19、RROSION AND HEAT RESISTANT ALLOY AMS5643 (SIMILAR TO UNS S17400). 3. FLUORESCENT PENETRANT INSPECTION PER ASTM E1417/E1417M, TYPE 1, SENSITIVITY LEVEL 2 MIN. 4. SURFACE TEXTURE: SYMBOLS PER ASME Y14.36M. REQUIREMENTS PER ASME B46.1. UNLESS OTHERWISE SPECIFIED, SURFACES TO BE 125 MICROINCHES Ra. 5. B
20、REAK SHARP EDGES .003 TO .015 UNLESS OTHERWISE SPECIFIED. 6. DIMENSIONS IN INCHES. /7/ HEAD TO SHANK FILLET SHALL BE COLD ROLLED PER AS7474 AFTER HEAT TREATMENT. THE COLD ROLLING SHALL BE SUFFICIENT TO REMOVE ALL VISUAL EVIDENCE OF GRINDING OR TOOL MARKS EXCEPT THAT DISTORTIONS AT “A” IN FIGURE 2 OF
21、 THE PROCUREMENT SPECIFICATION SHALL NOT BE PERMITTED ON THE HEAD BEARING AREA AND SHALL BE PERMITTED ON THE SHANK DIAMETER ONLY IF THE DISTORTION DOES NOT CAUSE THE SHANK DIAMETER TO EXCEED .4375 DIAMETER. 8. DIMENSIONING AND TOLERANCING: ANSI Y14.5M-1982 (ASME PUBLICATION). 9. DO NOT USE UNASSIGNE
22、D PART NUMBERS. 10. A CHANGE BAR (l) LOCATED IN THE LEFT MARGIN IS FOR THE CONVENIENCE OF THE USER IN LOCATING AREAS WHERE TECHNICAL REVISIONS, NOT EDITORIAL CHANGES, HAVE BEEN MADE TO THE PREVIOUS ISSUE OF THIS DOCUMENT. AN (R) SYMBOL TO THE LEFT OF THE DOCUMENT TITLE INDICATES A COMPLETE REVISION
23、OF THE DOCUMENT, INCLUDING TECHNICAL REVISIONS. CHANGE BARS AND (R) ARE NOT USED IN ORIGINAL PUBLICATIONS, NOR IN DOCUMENTS THAT CONTAIN EDITORIAL CHANGES ONLY. AS AND AMS ARE SAE INTERNATIONAL PUBLICATIONS. ASME IS AN AMERICAN SOCIETY OF MECHANICAL ENGINEERS PUBLICATION. ASTM IS AN ASTM INTERNATIONAL PUBLICATION.
