BS SP 126 & 127-1959+A3-2011 8750 Washers for unified hexagons for aircraft (primarily for facing purposes)《航空器统一六角钢用垫圈(主要用于饰面)》.pdf

1、BRITISH STANDARDBS SP 126 they should not be used in new product designs. Local officials should be consulted about any concerns on using cadmium plated parts. Spring steel strip; or Steel BS S 514 BS S 513 BS EN 2209 BS SP 127 Softened 18/10 chromium -nickel corrosion-resisting steel sheet and stri

2、p (titanium stabilized: 540 MPa); or Softened 18/10 chromium -nickel corrosion-resisting steel sheet and strip (niobium stabilized: 540 MPa) BS S 526 BS S 527 A)Latest issue. &BS SP 126 & 127:1959+A3:2011Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 21/06/2011 04:11, Uncontrolled Copy, (c)

3、BSI2 BSI 2011Table 2 DimensionsFigure 1 To suit bolts or nuts Code letterDiameter A Diameter B Oversizes (Y)max. min. max. min. max. min.in. in. in. in. in inNo. 4 40 UNC A 0.125 0.120 0.220 0.215 0.156 0.151No. 6 32 UNC B 0.151 0.146 0.295 0.290 0.182 0.177No. 8 32 UNC C 0.179 0.174 0.365 0.360 0.2

4、10 0.205No. 10 32 UNF D 0.205 0.200 0.400 0.395 0.236 0.231!in. UNF E 0.270 0.265 0.515 0.505 0.301 0.2965/16in. UNF G 0.333 0.328 0.585 0.575 0.364 0.359) in. UNF J 0.395 0.390 0.660 0.650 0.426 0.4217/16in. UNF L 0.458 0.453 0.805 0.795 0.489 0.484“in. UNF N 0.520 0.515 0.875 0.865 0.551 0.5469/16

5、in. UNF P 0.583 0.578 1.020 1.010 0.614 0.6095/8in. UNF Q 0.645 0.640 1.095 1.085 0.676 0.671#in. UNF S 0.770 0.765 1.235 1.225 0.801 0.7967/8 in. UNF U 0.895 0.890 1.455 1.445 0.926 0.9211in. UNF W 1.020 1.015 1.670 1.660 1.051 1.046* The tolerance on thickness is to be as defined for steel sheets

6、in the material specification.BS SP 126 & 127:1959+A3:2011Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 21/06/2011 04:11, Uncontrolled Copy, (c) BSI BSI 2011Appendix Conversion of inches to millimetresApproximate metric equivalents of the dimensions in this British Standard may be obtained

7、from the following table. More accurate conversions should be based on the tables in BS 350.Examples of use of table:0.018 in. = 0.254 + 0.2032 = 0.46 mm.1.670 in. = 25.4 + 15.24 + 1.778 = 42.42 mm.in. mm123425.450.876.2101.65678127.0152.4177.8203.2910228.6254.0BS SP 126 & 127:1959+A3:2011Licensed C

8、opy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 21/06/2011 04:11, Uncontrolled Copy, (c) BSIBSI GroupHeadquarters 389 Chiswick High Road, London, W4 4AL, UK Tel +44 (0)20 8996 9001 Fax +44 (0)20 8996 7001 standardsBSI - British Standards InstitutionBSI is the independent national body responsible for

9、preparing British Standards. It presents the UK view on standards in Europe and at the international level. It is incorporated by Royal Charter.RevisionsBritish Standards are updated by amendment or revision. Users of British Standards should make sure that they possess the latest amendments or edit

10、ions.It is the constant aim of BSI to improve the quality of our products and services. We would be grateful if anyone finding an inaccuracy or ambiguity while using this British Standard would inform the Secretary of the technical committee responsible, the identity of which can be found on the ins

11、ide front cover. Tel: +44 (0)20 8996 9000. Fax: +44 (0)20 8996 7400.BSI offers members an individual updating service called PLUS which ensures that subscribers automatically receive the latest editions of standards.Buying standardsOrders for all BSI, international and foreign standards publications

12、 should be addressed to Customer Services. Tel: +44 (0)20 8996 9001. Fax: +44 (0)20 8996 7001 Email: You may also buy directly using a debit/credit card from the BSI Shop on the Website http:/ response to orders for international standards, it is BSI policy to supply the BSI implementation of those

13、 that have been published as British Standards, unless otherwise requested.Information on standardsBSI provides a wide range of information on national, European and international standards through its Library and its Technical Help to Exporters Service. Various BSI electronic information services a

14、re also available which give details on all its products and services. Contact Information Centre. Tel: +44 (0)20 8996 7111 Fax: +44 (0)20 8996 7048 Email: Subscribing members of BSI are kept up to date with standards developments and receive substantial discounts on the purchase price of standards.

15、 For details of these and other benefits contact Membership Administration. Tel: +44 (0)20 8996 7002 Fax: +44 (0)20 8996 7001 Email: Information regarding online access to British Standards via British Standards Online can be found at http:/ information about BSI is available on the BSI website at h

16、ttp:/ CopyrightCopyright subsists in all BSI publications. BSI also holds the copyright, in the UK, of the publications of the international standardization bodies. Except as permitted under the Copyright, Designs and Patents Act 1988 no extract may be reproduced, stored in a retrieval system or tra

17、nsmitted in any form or by any means electronic, photocopying, recording or otherwise without prior written permission from BSI.This does not preclude the free use, in the course of implementing the standard, of necessary details such as symbols, and size, type or grade designations. If these detail

18、s are to be used for any other purpose than implementation then the prior written permission of BSI must be obtained.Details and advice can be obtained from the Copyright and Licensing Manager. Tel: +44 (0)20 8996 7070 Email: BS SP 126 & 127:1959+A3:2011Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 21/06/2011 04:11, Uncontrolled Copy, (c) BSI