BS 2SP 77 to 2SP 80-1973 Specification for snap head aluminium and aluminium alloy rivets《圆头形铝和铝合金铆钉规范》.pdf
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1、BRITISH STANDARD AEROSPACE SERIESBS 2SP 77 to2SP 80:1973(Superseding BS SP 77-80) Incorporating Amendment Nos. 1, 2 and 3 Specification forSnap head aluminium and aluminium alloy rivets*UDC 629.7.02:621.884.2:669.71*Index form of title: Rivets, snap head, in L36, L37, L58 and L86 materials.Licensed
2、Copy: Miss Judi Crimmins, British Standards Institution, 04/12/2012 15:24, Uncontrolled Copy, (c) The British Standards Institution 2012+A4:2015ICS 49.030.60BS 2SP 77 to 2SP 80:1973+A4:2015ISBN 978 0 580 81038 1Amendments issued since publicationAmd. No. Date Comments1884 January 19762389 November 1
3、9773264 June 1980A4 January 2015 See ForewordThis British Standard, having been approved by the Aerospace Industry Standards Committee, was published under the authority of the Executive Board on 31 October 1973 The British Standards Institution 2015 Published by BSI Standards Limited 2015The follow
4、ing BSI references relate to the work on this standard: Committee reference ACE/14 Drafts for approval 72/35865 DC 13/30273392ForewordPublishing informationBS 2SP 77 to BS 2SP 80:1973+A4:2015 is published by BSI Standards Limited, under licence from The British Standards Institution, and came into e
5、ffect on 31 January 2015. It was prepared by Technical Committee ACE/12, Aerospace Fasteners and Fastening. A list of organizations represented on this committee can be obtained on request to its secretary.SupersessionBS 2SP 77 to BS 2SP 80:1973+A4:2015 supersedes BS 2SP 77 to BS 2SP 80:1973 (incorp
6、orating Amendments No.1, No. 2 and No. 3) which is withdrawn.Information about this documentThese standards form part of a series of British Standards for rivets prepared at the request of the aerospace industry. The 1958 edition provided for ranges of snap head aluminium and aluminium alloy rivets
7、with head proportions and shank diameters basically the same as those used hitherto. In general, the dimensions of the rivets were more closely defined than previously, although the shank tolerances on sizes above in are wider than those adopted in BS SP 68 to BS SP 71, “100 countersunk precision he
8、ad aluminium and aluminium alloy rivets”.The distribution of the shank tolerances follows the American practice of allocating the greater part of the tolerance to the positive side, as compared with the practice in A.S. Standards for rivets of distributing the tolerances about the nominal diameter.
9、This principle, as well as the proportions of the rivet heads, has been endorsed by Technical Committee ISO/TC 20 Aircraft and space vehicles, of the International Organization for Standardization, as have the identification markings contained in this revision of the standards. A method for the iden
10、tification of undyed versions of the rivets is also given. Details of rivets with radiused tails for use in auto-riveting machines are given in Appendix A.Text introduced or altered by Amendment No. 4 is indicated in the text by tags . Minor editorial changes are not tagged. Previous amendments are
11、not indicated.Presentational conventionsThe provisions of this standard are presented in roman (i.e. upright) type. Its requirements are expressed in sentences in which the principal auxiliary verb is “shall”.Commentary, explanation and general informative material is presented in smaller italic typ
12、e, and does not constitute a normative element.Contractual and legal considerationsThis publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application.Compliance with a British Standard cannot confer immunity from legal obligatio
13、ns.Summary of pagesThis document comprises a front cover, an inside front cover, pages i and ii, pages 1 to 5 and a back cover.This standard has been updated (see copyright date) and may have had amendments incorporated. This will be indicated in the amendment table on the inside front cover.BS 2SP
14、77 to 2SP 80:1973 BSI 02-2000 iContentsPageForeword Inside front cover1 Scope 12 Materials 13 Condition of rivets 14 Dimensions 15 Finish 16 Identification and marking 17 Freedom from defects 28 Heat treatment of rivets 29 Packaging 2Appendix A Rivets for use in auto-riveting machines 5Appendix B Co
15、nversion of inches to approximate millimetreequivalents 5Figure 1 Dimensions of identification marks 3Figure 2 Rivet dimensions 3Figure 2a Enlarged view of head 3Figure 3 Snap head rivet 4Figure 4 Detail of radiused tail 5Table 1 British Standard numbers, materials, finish and marking of snap head a
16、luminium and aluminium alloy rivets 2Table 2 Dimensions of snap head aluminium and aluminium alloy rivets 3Table 3 Standard lengths and part numbers of snap headaluminium and aluminium alloy rivets 4Table 4 Dimensions of radiused tails 5Licensed Copy: Miss Judi Crimmins, British Standards Institutio
17、n, 04/12/2012 15:24, Uncontrolled Copy, (c) The British Standards Institution 2012BS 2SP 77 to 2SP 80:1973 BSI 02-2000 iContentsPageForeword Inside front cover1 Scope 12 Materials 13 Condition of rivets 14 Dimensions 15 Finish 16 Identification and marking 17 Freedom from defects 28 Heat treatment o
18、f rivets 29 Packaging 2Appendix A Rivets for use in auto-riveting machinesAppendix B Conversion of inches to approximate millimetreequivalents 5Figure 1 Dimensions of identification marks 3Figure 2 Rivet dimensions 3Figure 2a Enlarged view of head 3Figure 3 Snap head rivet 4Figure 4 Detail of radius
19、ed tail 5Table 1 British Standard numbers, materials, finish and marking of snap head aluminium and aluminium alloy rivets 2Table 2 Dimensions of snap head aluminium and aluminium alloy rivets 3Table 3 Standard lengths and part numbers of snap headaluminium and aluminium alloy rivets 4Table 4 Dimens
20、ions of radiused tails 5Licensed Copy: Miss Judi Crimmins, British Standards Institution, 04/12/2012 15:24, Uncontrolled Copy, (c) The British Standards Institution 2012BS 2SP 77 to 2SP 80:1973+A4:2015i The British Standards Institution 2015Protective finishiiblankLicensed Copy: Miss Judi Crimmins,
21、British Standards Institution, 04/12/2012 15:24, Uncontrolled Copy, (c) The British Standards Institution 2012BS 2SP 77 to 2SP 80:1973 BSI 02-2000 11 ScopeThese British Standards specify the material, dimensions, finish, marking and part numbers of snap head aluminium and aluminium alloy rivets for
22、aerospace use.NOTE The figures in inch units are to be regarded as the standard. A table is given in Appendix B to provide a ready means of calculating the approximate metric equivalents of the imperial dimensions. More accurate conversions should be based on the tables in BS 350.2 MaterialsThe rive
23、ts shall be manufactured from the appropriate material specified in Table 1 in the condition as supplied.3 Condition of rivets3.1 Rivets to BS SP 77 require no heat treatment.3.2 Rivets to BS SP 78 require heat treatment in accordance with 8.1 and 8.2 before use.3.3 Rivets to BS SP 79 require no hea
24、t treatment.3.4 Rivets to BS SP 80 shall be finally heat treated by the rivet manufacturer in accordance with 8.3.4 DimensionsThe rivets shall conform to the dimensions specified in Table 2 and Table 3.5 FinishThe finish of the rivets shall be in accordance with the relevant requirements of Table 1.
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