1、BSI Standards PublicationBS 3SP 1:2013Specification Shackles,carbon steel, cadmiumplated for aircraftBS 3SP 1:2013Incorporating Corrigendum No. 1BS 3SP 1:2013 BRITISH STANDARDPublishing and copyright informationThe BSI copyright notice displayed in this document indicates when the document was last
2、issued. The British Standards Institution 2015Published by BSI Standards Limited 2015ISBN 978 0 580 88982 0ICS 49.030.99The following BSI references relate to the work on this document: Committee reference ACE/12 Draft for comment 11/30254199 DCPublication historyFirst edition, September 1927Second
3、(present) edition, August 2013Amendments issued since publicationDate Text affected April 2015 C1 See forewordContentsForeword ii1 Scope 12 Normative references 13 Material 14 Dimensions 15 Manufacture 46 Freedom from defects 47 Heat treatment 48 Protective finish 49 Selection and preparation of mec
4、hanical test samples 410 Tests on sample bars 411 Tests on sample shackles 512 Marking 6List of figuresFigure 1 Dimensions of shackles (inches) 2Figure 2 British Standard test piece 5List of tablesTable 1 Dimensions of shackles shown in Figure 1 (inches) 3Summary of pagesThis document comprises a fr
5、ont cover, an inside front cover, pages i to ii,pages 1 to 6, an inside back cover and a back cover.BRITISH STANDARD BS 3SP 1:2013 The British Standards Institution 2013 iBS 3SP 1:2013BRITISH STANDARD The British Standards Institution 2015 iForewordPublishing informationThis British Standard is publ
6、ished by BSI Standards Limited, under licence fromThe British Standards Institution, and came into effect on 31 August 2013. It wasprepared by Technical Committee ACE/12, Aerospace fasteners and fasteningsystems. A list of organizations represented on this committee can be obtainedon request to its
7、secretary.SupersessionThis British Standard supersedes BS 2SP 1:1927, which is withdrawn.Information about this documentThis new edition of British Standard incorporates technical changes only. It doesnot represent a full review or revision of the standard, which will be undertakenin due course.Pres
8、entational conventionsThe provisions of this standard are presented in roman (i.e. upright) type. Itsrequirements are expressed in sentences in which the principal auxiliary verb is“shall”.Commentary, explanation and general informative material is presented insmaller italic type, and does not const
9、itute a normative element.Contractual and legal considerationsThis publication does not purport to include all the necessary provisions of acontract. Users are responsible for its correct application.Compliance with a British Standard cannot confer immunity from legalobligations.BRITISH STANDARDBS 3
10、SP 1:2013ii The British Standards Institution 2013ForewordPublishing informationThis British Standard is published by BSI Standards Limited, under licence fromThe British Standards Institution, and came into effect on 31 August 2013. It wasprepared by Technical Committee ACE/12, Aerospace fasteners
11、and fasteningsystems. A list of organizations represented on this committee can be obtainedon request to its secretary.SupersessionThis British Standard supersedes BS 2SP 1:1927, which is withdrawn.Information about this documentThis new edition of British Standard incorporates technical changes onl
12、y. It doesnot represent a full review or revision of the standard, which will be undertakenin due course.Presentational conventionsThe provisions of this standard are presented in roman (i.e. upright) type. Itsrequirements are expressed in sentences in which the principal auxiliary verb is“shall”.Co
13、mmentary, explanation and general informative material is presented insmaller italic type, and does not constitute a normative element.Contractual and legal considerationsThis publication does not purport to include all the necessary provisions of acontract. Users are responsible for its correct app
14、lication.Compliance with a British Standard cannot confer immunity from legalobligations.BRITISH STANDARDBS 3SP 1:2013ii The British Standards Institution 2013BS 3SP 1:2013 BRITISH STANDARDii The British Standards Institution 2015Text introduced or altered by Corrigendum No. 1 is indicated in the te
15、xt by tags . Minor editorial corrections are not tagged.1 ScopeThis British Standard specifies requirements for carbon steel shackles, cadmiumplated for aircraft use.2 Normative referencesThe following documents, in whole or in part, are normatively referenced in thisdocument and are indispensable f
16、or its application. For dated references, onlythe edition cited applies. For undated references, the latest edition of thereferenced document (including any amendments) applies.BS EN 2133, Aerospace series Cadmium plating of steels with specified tensilestrength 1450 MPa, copper, copper alloys and n
17、ickel alloysBS EN ISO 6506-1, Metallic materials Brinell hardness test Part 1: TestmethodBS S 93, Specification for aircraft material 40 carbon steel (normalized)(35/45 tonf/sq in: limiting ruling section 6 in)Def Stan 03-19, Electro-deposition of cadmium3 MaterialAll shackles shall be stamped from
18、steel conforming to BS S 93. Shackles shall bemachined where marked.4 DimensionsThe shackles shall be manufactured to the dimensions and limits shown in Figure1 and Table 1.BRITISH STANDARD BS 3SP 1:2013 The British Standards Institution 2013 1BS 3SP 1:2013BRITISH STANDARD The British Standards Inst
19、itution 2015 1BS 3SP 1:2013 BRITISH STANDARD2 The British Standards Institution 2015Figure 1 Dimensions of shackles (inches)PRIVATE CIRCULATION Draft BS 3SP 1, 2015-03-24 The British Standards Institution 2015 1 BS 3SP 1 PROPOSED CORRIGENDUM Figure 1 Dimensions of shackles (inches) Replace Figure 1
20、with the new Figure 1 below Figure 1 Dimensions of shackles (inches) Detail View showing permitted deviation of hole A to centreline of outer Boss Dimension C refers to the elongation of the outer Bosss profile (B), not the round hole A. Shackles shall be machined where shown thus Position of holes
21、dimension A shall be 0.010 in. off the shackles outside profile centreline. Table1DimensionsofshacklesshowninFigure1(inches)123456789101112131415161718A)Part No.SizeofshackleABCDEGRad. HRad. JKLMNRad.PRad.QMin.tensilebreakingstrengthApprox.weight+0.005+0.020+0.010+0.040+0.0200Nom.Nom.+0.020+0.015+0.
22、015+0.015+0.015lboz+0.00100000.020000+0.005+0.005690/A5/320.156250.3200.0400.5500.1200.2500.2000.8000.0400.2300.1000.0800.16011200.17690/B3/160.18750.4000.0400.7000.1500.2700.2200.8000.0600.3400.1500.1200.20022400.37690/C1/40.2500.5200.0400.8000.2000.3500.2600.8000.0800.4500.2000.1500.28039200.77690
23、/D9/320.281250.5800.0400.9000.2200.3500.2600.9000.0900.4800.2000.1600.32050400.82690/E11/320.343750.7100.0401.0500.3000.4000.2201.0000.1100.5500.2500.0200.2000.37067201.45690/F13/320.406250.8300.0401.2000.3500.4000.2501.2000.1200.6400.3000.0200.2400.45089601.87A)Thefiguresincolumn18aregivenfortheinf
24、ormationofdesignersandnotforpurposesofinspection.BRITISH STANDARD BS 3SP 1:2013 The British Standards Institution 2013 3BS 3SP 1:2013BRITISH STANDARD The British Standards Institution 2015 35 ManufactureThe holes in the shackles shall be drilled and the inside and outside faces of thebosses shall be
25、 machined. The rest of the surface shall be left blank but theshackles shall be cleaned so as to be free of all die marks.6 Freedom from defectsThe stampings shall be free from visible defects such as laps, cracks or seams.Machined areas shall be free of black scale.7 Heat treatmentThe stampings sha
26、ll be heat treated to comply with the tests specified inClause 10.The test samples, prepared as specified in Clause 9, shall be heat treated with,and in the same manner as, the stampings they represent.8 Protective finishAll parts shall be uniformly coated with cadmium in accordance withDef-Stan 03-
27、19 or BS EN 2133.CAUTION BS SP 1 shackles have cadmium as a plating material which hasbeen restricted and/or banned for use in many countries owing toenvironmental and health concerns; they should not be used in new productdesigns. Local officials should be consulted about any concerns on usingcadmi
28、um plated parts.9 Selection and preparation of mechanical testsamplesOne test sample shall be provided with each batch of 50 or fewer stampingswhich are heat treated together. The test sample shall be cut from the materialfrom which the stampings were made, and shall be of sufficient length to allow
29、one BS tensile test piece (Figure 2) to be prepared. The test sample shall be heattreated in accordance with Clause 7 and tested as specified in Clause 10.Two stampings shall be selected by the inspector from each of the abovementioned parcels of 50 stampings after heat treatment for testing as spec
30、ifiedin Clause 11.10 Tests on sample barsSample bars, representing the stampings that are to be provided shall, afterheat treatment in accordance with Clause 7, conform to the followingmechanical tests, which shall be carried out to the satisfaction of the inspectorpresent.Test pieces from the sampl
31、e bars selected and treated as specified in Clause 9shall be machined to the dimensions shown in Figure 2 and shall show thefollowing results:Ultimate tensile strength Between 35 and 45 tonf/ sq inElongation Not less than 20 per centBRITISH STANDARDBS 3SP 1:20134 The British Standards Institution 20
32、13BS 3SP 1:2013 BRITISH STANDARD4 The British Standards Institution 2015Reduction of area Not less than 40 per centBrinell hardness number Between 146 and 201 HBW10/3000/20The Brinell test shall be performed in accordance with BS EN ISO 6506-1. Theload of 3000 kg shall not be exceeded even momentari
33、ly, and shall bemaintained for not less than 15 sec. Prior to testing, the skin of the sample shallbe removed by filing, grinding or machining the areas to be tested. Thediameter of the impression shall be measured to the nearest 0.05 mm.NOTE The Brinell Hardness determination for small bars should
34、be made with asuitably reduced load and/or ball in accordance with BS EN ISO 6506-1.Figure 2 British Standard test pieceSection area = 1/16 sq inchDimensions in inchesThe14 inch neckdown radius shall not be undercut.The ends shall be machined down to ensure that they are concentric with thespecimen,
35、 but D should be kept as large as possible.Key1 1.000 gauge points11 Tests on sample shacklesFinished shackles selected as specified in Clause 9 shall be subjected to thefollowing tests, which shall be carried out in the presence of the inspector andto their satisfaction.a) Tensile strength. One of
36、the shackles shall be tested in tension todestruction and shall have an ultimate tensile strength not less than thatspecified in Table 1. The load shall be applied through a pin in the bossesand a cable at the loop end.b) Bend test. The bosses of the remaining shackle shall be bent away fromeach oth
37、er, through 90, so that the inner faces of the bosses are in-linewith each other in the same plane. The shackle shall withstand this testwithout showing any sign of fracture.BRITISH STANDARD BS 3SP 1:2013 The British Standards Institution 2013 5BS 3SP 1:2013BRITISH STANDARD The British Standards Ins
38、titution 2015 512 MarkingPrior to the application of the protective finish, each shackle shall be marked onthe external machined face with the British Standard identifier and part number(in accordance with Table 1). For example, SP1-690A is a 5/32 shackle. Allaccepted shackles shall be marked in clo
39、se proximity to the British Standardidentifier and part number with the identification mark of the inspector. Toavoid damage to shackles, all markings shall be applied by rolling, dot peeningor other approved method.BRITISH STANDARDBS 3SP 1:20136 The British Standards Institution 2013BS 3SP 1:2013 B
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