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1、DAIMLERCHRYSLERCORPORATIONNo:MS-3517MaterialStandardDatePublished:2003-09-23CategoryCode:X-1Change:AJEASLReq.:NoRESTRICTED:NoINCHSERIESEXTERNALLYTHREADEDSTEELFASTENERS英制外螺纹钢紧固件1.0GENERAL总则1.1Purpose目的Thisstandarddescribestherequirementsforinchseriesexternallythreadedsteelf
2、asteners.Tappingscrews,threadrollingscrews,selfdrillingtappingscrews,andsetscrewsarenotincluded.本标准描述了英制外螺纹钢紧固件的要求，不包括自攻螺钉，挤压螺钉，自钻自攻螺钉，和定位螺钉。1.2CoverageofthisStandard本标准覆盖的范围Thisstandardcoversthechemicalcomposition,processing(forming,heattreatment),mechanicalproperties(method
3、softesting),surfacecondition(decarburization),identification,andqualityrequirementsforGrade1,Grade2,Grade5,Grade5.1,Grade5.1BandGrade8fasteners.本标准包括等级为1，2，5，5.1，5.1B和8的紧固件的化学成分，过程（成形，热处理），机械性能（测试方法），表面条件（脱碳），标记和质量要求。1.4CorrelationtoOtherStandards与其它标准的关系Thisstandardissimilar
4、totheSAEJ429standardforexternallythreadedsteelfasteners.标准与SAEJ429对外螺纹钢制紧固件标准相似。1.5DesignationonDrawings图纸的指定ForspecificationpurposesonDaimlerChryslerEngineeringdrawings,theeightfastenergradesshallbedesignatedasfollowsinTable1.由于克莱斯勒工程图上的特殊规定，八个紧固件等级应按照表1来指定。TABLE1:DESIGNATIO
5、NONDRAWINGS表1：图纸上的指定MS-3517-1MS-3517-2MS-3517-5MS-3517-5.1MS-3517-5.1BMS-3517-81.6LocationofDefinitions/Abbreviations/Acronyms定义的位置/缩写/只取首个字母的缩写Definitions/Abbreviations/AcronymscanbefoundinSection9.0towardtheendofthisstandard.定义/缩写/只取首个字母的缩写可以在本标准的尾部的9.0节中找到。2.0MATERIALCHARA
6、CTERISTICS材料特性Thesteelusedtofabricatethesefastenersshallbemadefromsteelwire,inaccordancetoapprovedcommercialpractices.Itshallbeuniforminchemistryandquality;clean,soundandfreefromallsurfaceandinternaldefectsdetrimentaltothefabrication,performance,orappearanceofthepartsforwhich
7、itisintended.AdditionalinformationonsteelqualitycanbefoundinMS-BAR.用来制造这些紧固件的钢材应按照批准的商业运作选用圆钢。它们必须有一致的化学成分，干净，坚固，没有对零件的制造，性能，外观有害的所有表面和内部缺陷。有关钢材质量的附加说明可以在MS-BAR里找到。3.0CHEMICALCOMPOSITION化学成分ThesefastenersshallbemadeofsteelconformingtotheMaterialStandardorchemicalcomposi
8、tionanddescriptionspecifiedinTable2.Allchemicalcompositionvaluesaref
