1、BRITISH STANDARD AEROSPACE SERIESBS 2SP 81 and 2SP 82:1973(Superseding BS SP 81-82) Incorporating Amendment Nos. 1 and 2Specification forSnap head high nickel-copper alloy rivets*UDC 629.7.02:621.884.2:669.2453 *Index of form title: Rivets, snaphead, in DTD 204 material.Licensed Copy: Miss Judi Crim
2、mins, British Standards Institution, 04/12/2012 16:27, Uncontrolled Copy, (c) The British Standards Institution 2012+A3:2015ICS 49.030.60BS 2SP 81 and 2SP 82:1973+A3:2015ISBN 978 0 580 81033 6Amendments issued since publicationAmd. No. Date Comments2390 November 19773265 June 1980A3 January 2015 See
3、 Foreword.This 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 following BSI references relate to the wo
4、rk on this standard: Committee reference ACE/14 Drafts for approval 72/35866 DC 13/30273382ForewordPublishing informationBS 2SP 81 and 2SP 82:1973+A3:2015 is published by BSI Standards Limited, under licence from The British Standards Institution, and came into effect on 31 January 2015. It was prep
5、ared 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 81 and 2SP 82:1973+A3:2015 supersedes BS 2SP 81 and 2SP 82:1973 (incorporating Amendments No.1 and No.2), which
6、is withdrawn.Information about this documentThese standards form part of a series of British Standards for rivets prepared at the request of the aerospace industry.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 high nickel-copper alloy rivets with head proportions and shank diameters basically t
7、he same as those used hitherto. The proportions of the rivet heads are those endorsed by ISO/TC 20 Aircraft and space vehicles, as are the identification markings contained in this revision of the standard. In general, the dimensions of the rivets were more closely defined than previously, but the s
8、hank tolerances, in common with those for steel snap head rivets in BS SP 76, are wider than those specified for snap head aluminium and aluminium alloy rivets in BS SP 77 to SP 80. The tolerances are so arranged, however, that the maximum diameters are the same.This document makes reference to the
9、following standards:British Standards: BS 350, Conversion factors for units BS EN 2133, Aerospace series Cadmium plating of steels with specified tensile strength 1 450 MPa, copper, copper alloys and nickel alloysMoD Defence Equipment and Support Standards: DTD 204, Nickel-Copper Alloy Cold Drawn Wi
10、re for Rivets Def Stan 03-19, Electro-Deposition of CadmiumThe start and finish of text introduced or altered by Amendment No.3 is indicated in the text by tags . Minor editorial changes are not tagged. Previous amendments are not indicated.Presentational conventionsThe provisions of this standard a
11、re 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 type, and does not constitute a normative element.Contractual and legal cons
12、iderationsThis 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 obligations.BS 2SP 81 and 2SP 82:1973 BSI 02-2000 iContentsPageForeword Inside fro
13、nt cover1 Scope 12 Material 13 Dimensions 14 Finish 15 Identification and marking 16 Freedom from defects 17 Packaging 2Appendix A Rivets for use in auto-riveting machines 4Appendix B Table for conversion of inches to approximate millimetre equivalents 5Figure 1 Dimensions of identification marks 2F
14、igure 2 Rivet dimensions 2Figure 2a Enlarged view of head 2Figure 3 Snap head rivet 3Figure 4 Detail of radiused tail 4Table 1 British Standard numbers, finish and marking of snap head high nickel-copper alloy rivets for aircraft 2Table 2 Dimensions of snap head nickel-copper alloy rivets 2Table 3 S
15、tandard lengths and part numbers of snap head high nickel-copper alloy rivets 3Table 4 Dimensions of radiused tails 4Licensed Copy: Miss Judi Crimmins, British Standards Institution, 04/12/2012 16:27, Uncontrolled Copy, (c) The British Standards Institution 2012BS 2SP 81 and 2SP 82:1973 BSI 02-2000
16、iContentsPageForeword Inside front cover1 Scope 12 Material 13 Dimensions 14 Finish 15 Identification and marking 16 Freedom from defects 17 Packaging 2Appendix A Rivets for use in auto-riveting machines 4Appendix B Table for conversion of inches to approximate millimetre equivalents 5Figure 1 Dimen
17、sions of identification marks 2Figure 2 Rivet dimensions 2Figure 2a Enlarged view of head 2Figure 3 Snap head rivet 3Figure 4 Detail of radiused tail 4Table 1 British Standard numbers, finish and marking of snap head high nickel-copper alloy rivets for aircraft 2Table 2 Dimensions of snap head nicke
18、l-copper alloy rivets 2Table 3 Standard lengths and part numbers of snap head high nickel-copper alloy rivets 3Table 4 Dimensions of radiused tails 4Licensed Copy: Miss Judi Crimmins, British Standards Institution, 04/12/2012 16:27, Uncontrolled Copy, (c) The British Standards Institution 2012BS 2SP
19、 81 and 2SP 82:1973+A3:2015i The British Standards Institution 2015Summary 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 in
20、dicated in the amendment table on the inside front cover.Protective finishiiblankLicensed Copy: Miss Judi Crimmins, British Standards Institution, 04/12/2012 16:27, Uncontrolled Copy, (c) The British Standards Institution 2012BS 2SP 81 and 2SP 82:1973 BSI 02-2000 11 ScopeThese British Standards spec
21、ify the material, dimensions, finish, marking and part numbers of snap head high nickel-copper alloy rivets for 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 o
22、f the imperial dimensions. More accurate conversions should be based on the tables in BS 350.2 MaterialThe rivets shall be manufactured from material complying with the requirements of the latest issue of Procurement Executive M.O.D., aircraft material specification DTD 204.3 DimensionsThe rivets, u
23、nplated or before plating, shall conform to the dimensions specified in Table 2 and Table 3. When required to be plated, the dimensions of the rivets after plating may exceed the maximum dimensions given in Table 2 and Table 3 by not more than 0.0005in.4 Finish4.1 The finish of the rivets shall be i
24、n accordance with the relevant requirements of Table 1.4.2 Cadmium plating shall be in accordance with the requirements of the latest issue of Procurement Executive M.O.D., aircraft process specification DTD 904.5 Identification and marking5.1 The marking of the rivets shall be as specified in Table
25、 1, and shall be applied as follows.1) Rivets over 3/32in diameter which do not exceed 8 diameters in length shall be marked on the shank end with the exception of the 1/8in diameter which may be marked on the head.2) Rivets 1/16in and 3/32in diameter in all lengths, and rivets over 3/32in diameter
26、which exceed 8 diameters in length may be marked on either the head or the shank end.The marking shall be clearly visible and the depth shall not exceed the following dimensions.0.006 in on sizes up to and including 1/8in diameter;0.008 in on sizes 5/32in and 3/16in diameter;0.010 in on sizes 7/32in
27、 diameter and over.5.2 Rivets identified by old-style markings may be supplied until existing stocks are consumed. The obsolescent marking is as follows.5.3 Example of call-up:A cadmium-plated rivet 1/8in diameter 5/8in length shall be specified for ordering purposes as follows:6 Freedom from defect
28、sThe rivets shall be free from harmful defects.Rivets may be rejected at any time for faults in, or revealed by, manufacture, although they have been made from material passed previously for chemical composition and mechanical properties.Material MarkingDTD 204 “M”Licensed Copy: Miss Judi Crimmins,
29、British Standards Institution, 04/12/2012 16:27, Uncontrolled Copy, (c) The British Standards Institution 2012Licensed Copy: Miss Judi Crimmins, British Standards Institution, 04/12/2012 16:27, Uncontrolled Copy, (c) The British Standards Institution 2012BS 2SP 81 and 2SP 82:1973 BSI 02-2000 11 Scop
30、eThese British Standards specify the material, dimensions, finish, marking and part numbers of snap head high nickel-copper alloy rivets for 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 app
31、roximate metric equivalents of the imperial dimensions. More accurate conversions should be based on the tables in BS 350.2 MaterialThe rivets shall be manufactured from material complying with the requirements of the latest issue of Procurement Executive M.O.D., aircraft material specification DTD
32、204.3 DimensionsThe rivets, unplated or before plating, shall conform to the dimensions specified in Table 2 and Table 3. When required to be plated, the dimensions of the rivets after plating may exceed the maximum dimensions given in Table 2 and Table 3 by not more than 0.0005in.4 Finish4.1 The fi
33、nish of the rivets shall be in accordance with the relevant requirements of Table 1.4.2 Cadmium plating shall be in accordance with the requirements of the latest issue of Procurement Executive M.O.D., aircraft process specification DTD 904.5 Identification and marking5.1 The marking of the rivets s
34、hall be as specified in Table 1, and shall be applied as follows.1) Rivets over 3/32in diameter which do not exceed 8 diameters in length shall be marked on the shank end with the exception of the 1/8in diameter which may be marked on the head.2) Rivets 1/16in and 3/32in diameter in all lengths, and
35、 rivets over 3/32in diameter which exceed 8 diameters in length may be marked on either the head or the shank end.The marking shall be clearly visible and the depth shall not exceed the following dimensions.0.006 in on sizes up to and including 1/8in diameter;0.008 in on sizes 5/32in and 3/16in diam
36、eter;0.010 in on sizes 7/32in diameter and over.5.2 Rivets identified by old-style markings may be supplied until existing stocks are consumed. The obsolescent marking is as follows.5.3 Example of call-up:A cadmium-plated rivet 1/8in diameter 5/8in length shall be specified for ordering purposes as
37、follows:6 Freedom from defectsThe rivets shall be free from harmful defects.Rivets may be rejected at any time for faults in, or revealed by, manufacture, although they have been made from material passed previously for chemical composition and mechanical properties.Material MarkingDTD 204 “M”Licens
38、ed Copy: Miss Judi Crimmins, British Standards Institution, 04/12/2012 16:27, Uncontrolled Copy, (c) The British Standards Institution 2012Licensed Copy: Miss Judi Crimmins, British Standards Institution, 04/12/2012 16:27, Uncontrolled Copy, (c) The British Standards Institution 2012BS 2SP 81 and 2S
39、P 82:1973 BSI 02-2000 11 ScopeThese British Standards specify the material, dimensions, finish, marking and part numbers of snap head high nickel-copper alloy rivets for 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
40、 means of calculating the approximate metric equivalents of the imperial dimensions. More accurate conversions should be based on the tables in BS 350.2 MaterialThe rivets shall be manufactured from material complying with the requirements of the latest issue of Procurement Executive M.O.D., aircraf
41、t material specification DTD 204.3 DimensionsThe rivets, unplated or before plating, shall conform to the dimensions specified in Table 2 and Table 3. When required to be plated, the dimensions of the rivets after plating may exceed the maximum dimensions given in Table 2 and Table 3 by not more tha
42、n 0.0005in.4 Finish4.1 The finish of the rivets shall be in accordance with the relevant requirements of Table 1.4.2 Cadmium plating shall be in accordance with the requirements of the latest issue of Procurement Executive M.O.D., aircraft process specification DTD 904.5 Identification and marking5.
43、1 The marking of the rivets shall be as specified in Table 1, and shall be applied as follows.1) Rivets over 3/32in diameter which do not exceed 8 diameters in length shall be marked on the shank end with the exception of the 1/8in diameter which may be marked on the head.2) Rivets 1/16in and 3/32in
44、 diameter in all lengths, and rivets over 3/32in diameter which exceed 8 diameters in length may be marked on either the head or the shank end.The marking shall be clearly visible and the depth shall not exceed the following dimensions.0.006 in on sizes up to and including 1/8in diameter;0.008 in on
45、 sizes 5/32in and 3/16in diameter;0.010 in on sizes 7/32in diameter and over.5.2 Rivets identified by old-style markings may be supplied until existing stocks are consumed. The obsolescent marking is as follows.5.3 Example of call-up:A cadmium-plated rivet 1/8in diameter 5/8in length shall be specif
46、ied for ordering purposes as follows:6 Freedom from defectsThe rivets shall be free from harmful defects.Rivets may be rejected at any time for faults in, or revealed by, manufacture, although they have been made from material passed previously for chemical composition and mechanical properties.Mate
47、rial MarkingDTD 204 “M”Licensed Copy: Miss Judi Crimmins, British Standards Institution, 04/12/2012 16:27, Uncontrolled Copy, (c) The British Standards Institution 2012Licensed Copy: Miss Judi Crimmins, British Standards Institution, 04/12/2012 16:27, Uncontrolled Copy, (c) The British Standards Ins
48、titution 2012Licensed Copy: Miss Judi Crimmins, British Standards Institution, 04/12/2012 16:27, Uncontrolled Copy, (c) The British Standards Institution 2012BS 2SP 81 and 2SP 82:1973+A3:2015 The British Standards Institution 2015NOTE The figures in inch units are to be regarded as the standard. Acc
49、urate metric conversions should be based on the tables in BS 350.CAUTION. BS SP 82 rivets have cadmium as a plating material, which has been restricted and/or banned for use in many countries owing to environmental and health concerns; they should not be used in new product designs. Local officials should be consulted about any concerns on using cadmium-plated parts.4 Protective finish4.2 Cadmium plating shall be in accordance with the requirements of the latest issue of MoD Defence Equipment and Support Standard Def Stan 03-19 or
