SIZE .190 .250 .375 .500 THREADS PER INCH UNF - 3A 32 28 24 20 I 6 D - BODY DIAtKTER MAX .1900 MT N .1840 .2500 -2435 .3750 -3678 .4919 dA - HEAD DIAM
UNF螺纹Tag内容描述：
1、SIZE .190 .250 .375 .500 THREADS PER INCH UNF - 3A 32 28 24 20 I 6 D - BODY DIAtKTER MAX .1900 MT N .1840 .2500 -2435 .3750 -3678 .4919 dA - HEAD DIAMETER MAX .3125 .3750 PUN .5625 .3030 .3650 .5500 .750 ,7350 H - HEAD HEIGHT MAX ta N .1900 .1850 .2500 .2440 -3750 .3680 .5000 .4920 .5000 I S - HEAD SIZE HEIGHT MIN .1710 .2250 .3370 .I500 J - SOCKET WIDTH ACROSS EATS MIN .I562 .1875 .3125 .3750 -3790 T - KEY ENGAG3ENT t.u N .o900 .1200 .1820 .2450 G - WALL TICKNESS MIN .O650 .O950 .1430 .190。
2、 .14 .27.22 .14 .127 14* .250 STEEL *8 UNV- n ,0 ,97 ,5, ,3 so ,.45 22 ,7 ,39 ,26 .,8 ,!F 4. (1/4) BRASS29 15* .3125 STEEL10 6* (5/16) BRASS z4UN7-28 1.2s 1.12 .66 .53 .58 .51 .25 .20 .,9 .32 .21 .131 16* .3750 ST EEL *4”W-2B ,.44 ,3, .,9 ,65 .,012 8* (3/8) BRASS .64 .30 .26 .48.42 .24 .- 17* .4375 ST EEL.- 10* (7/16 ) Srwss 20 UNf-2B 1.94 1.81 1.00 .87 .93 .86 .39 .35 .65 .54 .33 .:15 18* Soo STEEL36 12* (1/2) BRASS Oum-2n .4 1.81 1.OO .87 .93 .86 .39 .35 .65.54 .33 .: *WINE Ts W1。
3、reserved. No 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: +1 724-776-4970 (outside USA) Fax: 724-776-0790 Email: CustomerServicesae.org SAE WEB ADDRESS: http:/www.sae.org ISSUED 1999-12REVISED 2004-12 STABILIZED 2014-01THIRD ANGLE PROJECTION。
4、ept forreplacement purposes.Custodians: Preparing activity:Army - AR DLA-ISAir Force 99(Project 5310-2546-056)AMSC N/A FSC 5310DISTRIBUTION STATEMENT A. Approved for public release; distribution isunlimited.INCH-POUNDNOTICE OF INACTIVATIONFOR NEW DESIGNProvided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-。
5、STITUTION 2 PARK STREET, LONDON WlA 2BS BRITISH STANDARD : AEROSPACE SERIES SPECIFICATION FOR PLAIN HEXAGONAL THIN NUT (OF CLASS 3B UNJ THREAD) , SEP 19a9 - -.- Index form of title: Nut, thin, plain hexagonal, Class 3B UN3 thread. This British Standard, having been approved by the Aerospace Industry Standards Committee, was published under the authority of the Executive Board of the Institution on 31 March, 1971. O British Standards Institution, 1971. The institution desires to call attention 。
6、9-2:1966 This British Standard, having been approved by the MechanicalEngineering IndustryStandards Committee and endorsed by the Chairman ofthe Engineering Divisional Council, was published under theauthority of the General Councilon 31 January1966 BSI 03-2000 The following BSI references relate to the work on this standard: Committee reference MEE/148 Draft for comment D65/1299 ISBN 0 580 35793 7 Co-operating organizations The Mechanical Engineering Industry Standards Committee, under w。
7、rBS3409-1:1961 This British Standard, having been approved by the MechanicalEngineering IndustryStandards Committeeand endorsed by theChairman ofthe EngineeringDivisional Council, was published under the authorityof the General Councilon 16August1961 BSI 05-2000 The following BSI references relate to the work on this standard: Committee reference MEE/148 Draft for comment A (MEE) 8221 ISBN 0 580 35252 8 Co-operating organizations The Mechanical Engineering Industry Standards Committee, un。
8、ing. Bolts, screws and nuts can also be produced by machining from hexagon bars. Bolts and screws produced by cold forging shall, except in the case of bolts and screws bright finished to Grade A (see Table 4, Appendix A) be heat-treated after forging. Bolts, screws and nuts produced by hot forging or by turning from bars, and cold formed nuts shall be heat-treated when this is necessary to give the requisite mechanical properties specified in Clauses4 and 6 and Appendix A. b. Cold forged bolts 。
9、es were preparing a revisionof the American Standard which represented a considerable simplification of previous practice. 5 - BSI BS*ir2769 51 Lb24bb9 0033b3L 4 B.S. 1769 : 1951 Finally, at a conference held at the British Standards Institution, London, in April, 1951, attended by delegates from the United Kingdom, the United States and Canada, agreement was reached on the basic dimensions, for the normal and heavy series and overall limits were established with the provision that individual co。
