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1、InternationalStandardISO10511Thirdedition2025-06ISO2025FastenersPrevailingtorquehexagonnutsThinnuts(withnon-metallicinsert)FixationsEcroushexagonauxautofreinesEcrousbas(aanneaunonmetallique)ReferencenumberISO10511:2025(en)COPYRIGHTPROTECTEDDOCUMENTISO2025Allrightsreserved.Unlessotherwisespecified,or
2、requiredinthecontextofitsimplementation,nopartofthispublicationmaybereproducedorutilizedotherwiseinanyformorbyanymeans,electronicormechanical,includingphotocopying,orpostingontheinternetoranintranet,withoutpriorwrittenpermission.PermissioncanberequestedfromeitherISOattheaddressbeloworISO*smemberbody
3、inthecountryoftherequester.ISOcopyrightofficeCP401Ch.deBlandonnet8CH-1214Vernier,GenevaPhone:+41227490111Email:copyrightiso.orgWebsite:www.iso.orgPublishedinSwitzerlandContentsPageForewordiv1 Scope12 Normativereferences13 Termsanddefinitions24 Dimensions25 RequirementsandreferenceInternationalStanda
4、rds46 Markingandlabelling56.1 Markingonproduct56.2 Labellingonpackage57 Designation5AnnexA(normative)ThinnutsinsteelandstainlesssteelwithDM5notincludedinISO898-2andISO3506-26Bibliography9ForewordISO(theInternationalOrganizationforStandardization)isaworldwidefederationofnationalstandardsbodies(ISOmem
5、berbodies).TheworkofpreparingInternationalStandardsisnormallycarriedoutthroughISOtechnicalcommittees.Eachmemberbodyinterestedinasubjectforwhichatechnicalcommitteehasbeenestablishedhastherighttoberepresentedonthatcommittee.Internationalorganizations,governmentalandnon-governmental,inliaisonwithISO,al
6、sotakepartinthework.ISOcollaboratescloselywiththeInternationalElectrotechnicalCommission(IEC)onallmattersofelectrotechnicalstandardization.TheproceduresusedtodevelopthisdocumentandthoseintendedforitsfurthermaintenancearedescribedintheISO/IECDirectives,Part1.Inparticular,thedifferentapprovalcriterian
7、eededforthedifferenttypesofISOdocumentshouldbenoted.ThisdocumentwasdraftedinaccordancewiththeeditorialrulesoftheISO/IECDirectives,Part2(SeeWWW.iso.org/directives).ISOdrawsattentiontothepossibilitythattheimplementationofthisdocumentmayinvolvetheuseof（八）patent(三).ISOtakesnopositionconcerningtheevidenc
8、e,validityorapplicabilityofanyclaimedpatentrightsinrespectthereof.Asofthedateofpublicationofthisdocument,ISOhadnotreceivednoticeof（八）patent(三)whichmayberequiredtoimplementthisdocument.However,implementersarecautionedthatthismaynotrepresentthelatestinformation,whichmaybeobtainedfromthepatentdatabasea
9、vailableatwww.iso.org/patents.ISOshallnotbeheldresponsibleforidentifyinganyorallsuchpatentrights.Anytradenameusedinthisdocumentisinformationgivenfortheconvenienceofusersanddoesnotconstituteanendorsement.Foranexplanationofthevoluntarynatureofstandards,themeaningofISOspecifictermsandexpressionsrelated
10、toconformityassessment,aswellasinformationaboutISOsadherencetotheWorldTradeOrganization(WTO)principlesintheTechnicalBarrierstoTrade(TBT),SeeWWW.iso.org/iso/foreword.htmLThisdocumentwaspreparedbyTechnicalCommittee1SOTC2,Fasteners,SubcommitteeSC12,Fastenerswithmetricinternalthread,incollaborationwitht
11、heEuropeanCommitteeforStandardization(CEN)TechnicalCommitteeCEN/TC185,Fasteners,inaccordancewiththeAgreementontechnicalcooperationbetweenISOandCEN(ViennaAgreement).Thisthirdeditioncancelsandreplacesthesecondedition(ISO10511:2012)whichhasbeentechnicallyrevised.Themainchangesareasfollows: thedesignpri
12、nciplesofthesenutshavebeenclarifiedinScope(seeNote); theuseofthinnutsandawarninginrelationtolowerstrippingresistancehavebeenaddedinScope;nutswithDVM5(notincludedinISO898-2andISO3506-2)havebeendealtwithinAnnexA: forsteelnutslquenchingandtemperingconditionshavebeenspecifiedinCIaUSe5inaccordancewithISO
13、898-2fseeTable3); stainlesssteelnutshavebeenaddedinaccordancewithISO3506-2; M7,Ml8,M22,M27,M33andM39havebeenadded; thecountersinkanglehasbeenimprovedfrom90o-120otoIlOo-120o;一,maanddwminhavebeenspecifiedwithtwodecimalplaces;一wminfrsizesDM5hasbeenchangedfromsmin-IT16toSmin-inordertohavealargerbearings
14、urfaceareaandthuslesscontactpressure; hnxforM20andM36hasbeenincreasedsothatregular,highandthinnutshaveanidenticalroomfortheprevailingtorquefeaturehma-mmin)toaccommodatethenon-metallicinsert;hIninhasthereforebeenincreasedinaccordancewiththespecifiedtolerance(seeTable2): specificationsformarkingandlab
15、ellinghavebeenaddedasClaUSe6.Anyfeedbackorquestionsonthisdocumentshouldbedirectedtotheusersnationalstandardsbody.AcompletelistingofthesebodiescanbefoundatWWW.iso.org/members.htmLFastenersPrevailingtorquehexagonnutsThinnuts(withnon-metallicinsert)1 ScopeThisdocumentspecifiesthecharacteristicsofprevai
16、lingtorquehexagonthinnuts(withnon-metallicinsert),insteelandstainlesssteel,withmetriccoarsepitchthreadM3toM39landwithproductgradesAandB.NOTEThesenutsaredesignedwithanoverallheightequaltommin(asspecifiedinISO898-2andISO4035forstyle0)plustheprevailingtorquefeature.Theheightoftheprevailingtorquefeature(hna
