BS ISO 8279-2008 Aerospace - Nuts hexagonal plain normal height normal across flats with MJ threads classifications 600 MPa (at ambient temperature) 120 °C 600 MPa (at am.pdf

《BS ISO 8279-2008 Aerospace - Nuts hexagonal plain normal height normal across flats with MJ threads classifications 600 MPa (at ambient temperature) 120 °C 600 MPa (at am.pdf》由会员分享，可在线阅读，更多相关《BS ISO 8279-2008 Aerospace - Nuts hexagonal plain normal height normal across flats with MJ threads classifications 600 MPa (at ambient temperature) 120 °C 600 MPa (at am.pdf（12页珍藏版）》请在麦多课文档分享上搜索。

1、BRITISH STANDARD BS ISO 8279:2008 Aerospace Nuts, hexagonal, plain, normal height, normal across flats, with MJ threads, classifications: 600 MPa (at ambient temperature)/120 C, 600 MPa (at ambient temperature)/235 C, 900 MPa (at ambient temperature)/ 425 C, 1 100 MPa (at ambient temperature)/235 C,

2、 1 100 MPa (at ambient temperature)/315 C, 1 100 MPa (at ambient temperature)/650 C, 1 210 MPa (at ambient temperature)/730 C, 1 250 MPa (at ambient temperature)/235 C and 1 550 MPa (at ambient temperature)/600 C Dimensions ICS 49.030.30 BS ISO 8279:2008 This British Standard was published under the

3、 authority of the Standards Policy and Strategy Committee on 30 September 2008 BSI 2008 ISBN 978 0 580 55022 5 National foreword This British Standard is the UK implementation of ISO 8279:2008. It supersedes BS A317:1997 which is withdrawn. The UK participation in its preparation was entrusted to Te

4、chnical Committee ACE/12, Aerospace fasteners and fastening systems. A list of organizations represented on this committee can be obtained on request to its secretary. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct appli

5、cation. Compliance with a British Standard cannot confer immunity from legal obligations. Amendments/corrigenda issued since publication Date Comments Reference number ISO 8279:2008(E)INTERNATIONAL STANDARD ISO 8279 Third edition 2008-08-01 Aerospace Nuts, hexagonal, plain, normal height, normal acr

6、oss flats, with MJ threads, classifications: 600 MPa (at ambient temperature)/120 C, 600 MPa (at ambient temperature)/235 C, 900 MPa (at ambient temperature)/425 C, 1 100 MPa (at ambient temperature)/235 C, 1 100 MPa (at ambient temperature)/315 C, 1 100 MPa (at ambient temperature)/650 C, 1 210 MPa

7、 (at ambient temperature)/730 C, 1 250 MPa (at ambient temperature)/235 C and 1 550 MPa (at ambient temperature)/600 C Dimensions Aronautique et espace crous hexagonaux ordinaires, hauteur normale, surplats normaux, filetages MJ, classifications: 600 MPa ( temprature ambiante)/120 C, 600 MPa ( tempr

8、ature ambiante)/235 C, 900 MPa ( temprature ambiante)/425 C, 1 100 MPa ( temprature ambiante)/235 C, 1 100 MPa ( temprature ambiante)/315 C, 1 100 MPa ( temprature ambiante)/650 C, 1 210 MPa ( temprature ambiante)/730 C, 1 250 MPa ( temprature ambiante)/235 C et 1 550 MPa ( temprature ambiante)/600

9、C Dimensions BS ISO 8279:2008 ii iii Foreword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Each member body

10、interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotech

11、nical Commission (IEC) on all matters of electrotechnical standardization. International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2. The main task of technical committees is to prepare International Standards. Draft International Standards adopted by t

12、he technical committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent right

13、s. ISO shall not be held responsible for identifying any or all such patent rights. ISO 8279 was prepared by Technical Committee ISO/TC 20, Aircraft and space vehicles, Subcommittee SC 4, Aerospace fastener systems. This third edition cancels and replaces the second edition (ISO 8279:1997), which ha

14、s been technically revised. BS ISO 8279:2008iv Introduction The dimensions specified in this International Standard have been determined to satisfy the requirements of the procurement specification ISO 9139. BS ISO 8279:20081Aerospace Nuts, hexagonal, plain, normal height, normal across flats, with

15、MJ threads, classifications: 600 MPa (at ambient temperature)/120 C, 600 MPa (at ambient temperature)/235 C, 900 MPa (at ambient temperature)/425 C, 1 100 MPa (at ambient temperature)/235 C, 1 100 MPa (at ambient temperature)/315 C, 1 100 MPa (at ambient temperature)/650 C, 1 210 MPa (at ambient tem

16、perature)/730 C, 1 250 MPa (at ambient temperature)/235 C and 1 550 MPa (at ambient temperature)/600 C Dimensions 1 Scope This International Standard specifies the dimensions of plain, hexagonal nuts, of normal height, normal across flats, with MJ threads, of classifications: 600 MPa 1) /120 C 2) ,

17、600 MPa 1) /235 C 2) , 900 MPa 1) /425 C 2) , 1 100 MPa 1) /235 C 2) , 1 100 MPa 1) /315 C 2) , 1 100 MPa 1) /650 C 2) , 1 210 MPa 1) /730 C 2) , 1 250 MPa 1) /235 C 2) and 1 550 MPa 1) /600 C 2) . Nuts provided with holes are intended to be used with lockwire in conformity with ISO 245. This Intern

18、ational Standard is only applicable for the compilation of aerospace product standards. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition o

19、f the referenced document (including any amendments) applies. ISO 245, Aerospace Lockwire Diameters ISO 5855-2, Aerospace MJ threads Part 2: Limit dimensions for bolts and nuts ISO 8788, Aerospace Nuts, metric Tolerances of form and position 1) Corresponds to the minimum tensile stress that the nut

20、is able to withstand at ambient temperature, without breaking or cracking, when tested with a bolt of a higher strength class. 2) Maximum temperature that the nut is able to withstand, without permanent alteration to its original characteristics, after ambient temperature has been restored. The maxi

21、mum temperature is conditioned by the material or by the surface treatment. BS ISO 8279:20082 3 Configuration and dimensions See Figure 1 and Table 1. Dimensions and tolerances are expressed in millimetres. They apply after any surface coating(s), but before the application of any lubricant. Dimensi

22、ons in millimetres Tolerances of form and position shall conform to those specified in ISO 8788. Details of form not stated are left to the manufacturers discretion. Key 1 two holes diameter U, optional 2 thread aThese values, in micrometres, apply before any surface coating(s) is(are) applied. The

23、values do not apply to threads whose surface texture will be as achieved by the usual manufacturing methods. bAll forms of entry (chamfer or radius) permissible within these limiting dimensions. cForm of contour, within limiting dimensions, is left to the manufacturers discretion. Diameter M may be

24、tangential to, but shall not intrude on, the flats. dTo both faces. eFrom one face. Figure 1 BS ISO 8279:20083 Table 1 L M U E F H N V W Dia- meter code Thread anom. tol. min. H13 min. nom. tol. h14 nom. tol. 0,2 min. Lockwire diameter b 020 MJ2 0,4-4H6H 2,2 3,4 4,2 4 1,6 025 MJ2,5 0,45-4H6H2,7 4,4

25、5,3 5 2 030 MJ3 0,5-4H6H 3,2 5,4 6,5 6 2,4 0,4 0 2 040 MJ4 0,7-4H6H 4,2 6,4 7,6 7 3,2 050 MJ5 0,8-4H6H 5,2 0,6 0 +7,4 8,7 8 h12 4 060 MJ6 1-4H5H 6,3 9,3 10,910 4,8 3,9 2 070 MJ7 1-4H5H 7,3 10,2 12 11 5,6 4,4 2,4 080 MJ8 1-4H5H 8,3 12,2 1 14,313 6,4 0,5 5 2,8 0,8 100 MJ10 1,25-4H5H 10,3 16 18,917 8 6

26、,9 3,6 120 MJ12 1,25-4H5H 12,3 18 21,119 9,6 8 4,4 140 MJ14 1,5-4H5H 14,4 21 24,522 11,2 9,6 5,1 160 MJ16 1,5-4H5H 16,4 23 26,824 12,8 10,7 5,9 180 MJ18 1,5-4H5H 18,4 26 30,227 14,4 12 6,7 200 MJ20 1,5-4H5H 20,4 29 33,630 16 13,4 7,5 220 MJ22 1,5-4H5H 22,4 30,9 35,832 17,6 14,4 8,3 240 MJ24 2-4H5H 2

27、4,5 0,8 0 +34,9 1,5 40,4 36 h13 19,2 0,6 0 3 16,1 9,1 1,25 aIn accordance with ISO 5855-2. bFor information, in conformity with ISO 245. BS ISO 8279:20084 Bibliography 1 ISO 9139, Aerospace Nuts, plain or slotted (castellated) Procurement specification 2 ISO 13715, Technical drawings Edges of undefi

28、ned shape Vocabulary and indications BS ISO 8279:2008 blankBS ISO 8279:2008 BSI Group Headquarters 389 Chiswick High Road, London W4 4AL, UK Tel +44 (0)20 8996 9001 Fax +44 (0)20 8996 7001 British Standards Institution (BSI) BSI is the independent national body responsible for preparing British Sta

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

30、stant 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 inside front cover. T

31、el: +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 standards Orders for all BSI, international and foreign standards publications should be addres

32、sed 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:/ In response to orders for international standards, it is BSI policy to supply the BSI implementation of those that have been

33、 published as British Standards, unless otherwise requested. Information on standards BSI 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 are also avail

34、able which give details on all its products and services. Contact the 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. For det

35、ails 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:/ Further information about BSI is available on the BSI website at

36、http:/. Copyright Copyright 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

37、transmitted 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 details 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 & Licensing Manager. Tel: +44 (0)20 8996 7070 Email: