1、Z5XISOInternationalStandardISO10512Thirdedition2025-06ISO2025FastenersPrevailingtorquehexagonnutsRegularnuts(withnon-metallicinsert),withfinepitchthreadFixationsEcroushexagonauxautofreinesEcrousnormaux(aanneaunonmetallique),apasfinReferencenumberISO10512:2025(en)COPYRIGHTPROTECTEDDOCUMENTISO2025Allr
2、ightsreserved.Unlessotherwisespecified,orrequiredinthecontextofitsimplementation,nopartofthispublicationmaybereproducedorutilizedotherwiseinanyformorbyanymeans,electronicormechanical,includingphotocopying,orpostingontheinternetoranintranet,withoutpriorwrittenpermission.Permissioncanberequestedfromei
3、therISOattheaddressbeloworISO,smemberbodyinthecountryoftherequester.ISOcopyrightofficeCP401Ch.deBlandonnet8CH-1214Vernier,GenevaPhone:+41227490111Email:copyrightiso.orgWebsite:www.iso.orgPublishedinSwitzerlandContentsPageForewordiv1 Scope12 Normativereferences13 Termsanddefinitions14 Dimensions25 Re
4、quirementsandreferenceInternationalStandards46 Markingandlabelling56.1 Markingonproduct56.2 Labellingonpackage57 Designation5Bibliography6ForewordISO(theInternationalOrganizationforStandardization)isaworldwidefederationofnationalstandardsbodies(ISOmemberbodies).TheworkofpreparingInternationalStandar
5、dsisnormallycarriedoutthroughISOtechnicalcommittees.Eachmemberbodyinterestedinasubjectforwhichatechnicalcommitteehasbeenestablishedhastherighttoberepresentedonthatcommittee.Internationalorganizations,governmentalandnon-governmental,inliaisonwithISO,alsotakepartinthework.ISOcollaboratescloselywiththe
6、InternationalElectrotechnicalCommission(IEC)onallmattersofelectrotechnicalstandardization.TheproceduresusedtodevelopthisdocumentandthoseintendedforitsfurthermaintenancearedescribedintheISO/IECDirectives,Part1.Inparticular,thedifferentapprovalcriterianeededforthedifferenttypesofISOdocumentshouldbenot
7、ed.ThisdocumentwasdraftedinaccordancewiththeeditorialrulesoftheISO/IECDirectives,Part2(seeWWW.iso.org/directives).ISOdrawsattentiontothepossibilitythattheimplementationofthisdocumentmayinvolvetheuseof（八）patent(三).ISOtakesnopositionconcerningtheevidence,validityorapplicabilityofanyclaimedpatentrights
8、inrespectthereof.Asofthedateofpublicationofthisdocument,ISOhadnotreceivednoticeof（八）patent(三)whichmayberequiredtoimplementthisdocument.HoweverlImplementersarecautionedthatthismaynotrepresentthelatestinformation,whichmaybeobtainedfromthepatentdatabaseavailableatWWW.iso.org/patents.ISOshallnotbeheldre
9、sponsibleforidentifyinganyorallsuchpatentrights.Anytradenameusedinthisdocumentisinformationgivenfortheconvenienceofusersanddoesnotconstituteanendorsement.Foranexplanationofthevoluntarynatureofstandards,themeaningofISOspecifictermsandexpressionsrelatedtoconformityassessment,aswellasinformationaboutIS
10、OsadherencetotheWorldTradeOrganization(WTO)principlesintheTechnicalBarrierstoTrade(TBT工seeWWW.iso.org/iso/foreword.htmLThisdocumentwaspreparedbyTechnicalCommitteeISO/TC2,Fasteners,SubcommitteeSC12,Fastenerswithmetricinternalthread,incollaborationwiththeEuropeanCommitteeforStandardization(CEN)Technic
11、alCommitteeCEN/TC185,Fasteners,inaccordancewiththeAgreementontechnicalcooperationbetweenISOandCEN(ViennaAgreement).Thisthirdeditioncancelsandreplacesthesecondedition(ISO10512:2012)whichhasbeentechnicallyrevised.Themainchangesareasfollows: thedesignprinciplesofthesenutshavebeenclarifiedinScope(seeNot
12、e); style,relevantpropertyclassesandrelatedquenchingandtemperingconditionsforsteelnutshavebeenspecifiedinClaUSe5inaccordancewithISO898-2,andpropertyclass6hasbeendeleted(seeTable3; stainlesssteelnutshavebeenaddedinaccordancewithISO3506-2; M202hasbeenadded,aswellasnon-preferredsizes18mm,22mm,27mm,33mm
13、and39mm; da,maxhasbeenspecifiedwithtwodecimalplaces;一hmaxforsize20mmhasbeenincreasedsothatregular,highandthinnutshaveanidenticalroomfortheprevailingtorquefeature(TImw-血局”)toaccommodatethenon-metallicinsert;h-hasthereforebeeni*j，v-IIldXIIllIljIIllIlincreasedinaccordancewiththespecifiedtolerance(seeTa
14、ble2); specificationsformarkingandlabellinghavebeenaddedasClause6.Anyfeedbackorquestionsonthisdocumentshouldbedirectedtotheusersnationalstandardsbody.AcompletelistingofthesebodiescanbefoundatWWW.iso.org/membnrs.htmLFastenersPrevailingtorquehexagonnutsRegularnuts(withnon-metallicinsert),withfinepitch
15、thread1 ScopeThisdocumentspecifiesthecharacteristicsofprevailingtorquehexagonregularnuts(withnon-metallicinsert),insteelandstainlessSteeLwithmetricfinepitchthread8mmto39mm,andwithproductgradesAandB.NOTEThesenutsaredesignedwithanoverallheightequaltommin(asspecifiedinISO898-2andISO8673forstyle1)plusth
16、eprevailingtorquefeature.Theheightoftheprevailingtorquefeature(力ma-mminforthenon-metallicinsertisidenticalforregular,highandthinnutsforagivendiameter.Ifincertaincasesotherspecificationsarerequested,propertyclassesandstainlesssteelgradescanbeselectedfromISO898-2orISO3506-2.2 NormativereferencesThefol
17、lowingdocumentsarereferredtointhetextinsuchawaythatsomeoralloftheircontentconstitutesrequirementsofthisdocument.Fordatedreferences,onlytheeditioncitedapplies.Forundatedreferences,thelatesteditionofthereferenceddocument(includinganyamendments)applies.ISO225,FastenersBolts,screws,studsandnutsSymbolsan
18、ddescriptionsOfdimensionsISO898-2,FastenersMechanicalpropertiesOffastenersmadeofcarbonsteelandalloysteelPart2:NutswithspecifiedpropertyclassesISO965-llISOgeneralpurposemetricscrewthreadsTolerancesPart1:PrinciplesandbasicdataISO1891-4,FastenersVocabularyPart4:Control,inspection,delivery,acceptanceand
19、qualityISO2320,FastenersPrevailingtorquesteelnutsFunctionalpropertiesISO3269,FastenersAcceptanceinspectionISO3506-2,FastenersMechanicalpropertiesofcorrosion-resistantstainlesssteelfastenersPart2:NutswithspecifiedgradesandpropertyclassesISO4042,FastenersElectroplatedcoatingsystemsISO4759-LTolerancesf
20、orfastenersPart1:Bolts,screws,studsandnutsProductgradesA,BandCISO6157-2,FastenersSurfacediscontinuitiesPart2:NutsISO8991,DesignationsystemforfastenersISO8992,FastenersGeneralrequirementsforbolts,screws,studsandnutsISO10683,FastenersNon-electrolyticallyappliedzincflakecoatingsystems3 Termsanddefiniti
21、onsNotermsanddefinitionsarelistedinthisdocument.ISOandIECmaintainterminologydatabasesforuseinstandardizationatthefollowingaddresses: ISOOnlinebrowsingplatform:availableathttps:/www.iso.org/ObP IECElectropedia:availableathttps:WWW.electropedia.org/4DimensionsDimensionsshallbeinaccordancewithFigUre1an
22、dwithTableS1and2.SymbolsanddescriptionsofdimensionsarespecifiedinISO225.Prevailingtorquefeature:shapeatthediscretionofthemanufacturerwithamaximumdiameters.Thesenutsaremanufacturedwithoutwasher-face,unlessspecificallyagreedatthetimeoftheorder.Figure1Prevailingtorqueregularnuts(withnon-metallicinsert)
23、Table 1 Dimensionsfornuts8mmto16mm(productgradeA)DimensionsinmillimetresThread,DPaM8lM10l,25M12l,5(Ml4l,5)M16l,5(M10l)(Ml2l,25)max.8,7510,8012,9615,1217,28叁min.8,0010,0012,0014,0016,00dwmin.11,6314,6316,6319,6422,49emin.14,3817,7720,0323,3626,75,nom.=max.Rh9,5011,9014,9017,0019,10lumin.8,9211,2014,2
24、015,9017,80mmin.6,448,0410,3712,1014,10mwmin.5,156,438,309,6811,28nom.=max.13,0016,0018,0021,0024,00Smin.12,7315,7317,7320,6723,67Sizesshowninbracketsarenon-preferred.aPisthepitchofthethread.bThefollowingtolerancesapply:hl5forD12mmandhl6for12mmD18mm.Table 2 Dimensionsfornuts18mmto39mm(productgradeB)
25、DimensionsinmillimetresThread,DPa(M182)M202(M222)M242(M272)M302(M332)M363(M393)(MI8x1,5)(M205)(M22l,5)max.19,4421,6023,7625,9229,1632,4035,6438,8842,12min.18,0020,0022,0024,0027,0030,0033,0036,0039,00dwmin.24,8527,7031,3533,2538,0042,7546,5551,1155,86emin.29,5632,9537,2939,5545,2050,8555,3760,7966,4
26、41nom.=max.L,b21,2023,0025,0027,1029,9032,6035,7038,9041,907umin.19,9020,9022,9025,0027,8030,1033,5036,4039,40mmin.15,1016,9018,1020,2022,5024,3027,4029,4031,80mwmin.12,0813,5214,4816,1618,0019,4421,9223,5225,44nom.=max.27,0030,0034,0036,0041,0046,0050,0055,0060,00Smin.26,1629,1633,0035,0040,0045,00
27、49,0053,8058,80Sizesshowninbracketsarenon-preferred.aPisthepitchofthethread.bThefollowingtolerancesapply:hl6for12mmD18mmandhl7for18mmD39mm.5RequirementsandreferenceInternationalStandardsTherequirementsspecifiedintheInternationalStandardsreferencedinTable3shallapply.Table3RequirementsandreferenceInte
28、rnationalStandardsMaterialNutbodySteelStainlesssteelInserte.g.polyamideGeneralre-.，InternationalStandardqurementsISO8992ThreadToleranceclass6HaInternationalStandardISO965-1MechanicalpropertiesStylePropertyclassGradecandpropertyclass18mmP16mm8b,10b16mmD39mm8bQjn/MA2-70,A4-70,A4-80,8mm_D_24mm口4-80,D6-
29、80qnq11A2-50,A2-70,A4-50,24mm16mm:BInternationalStandardISO4759-1SurfaceconditionAsprocessed(nocoatingElectroplatedcoatingsasspecifiedinISO4042Non-electrolyticallyappliedzincflakecoatingsasspecifiedinISO10683Otherfinishes,coatinshallbeagreedbetw(Cleanandbrightand/orPassivatedeand/orLubricated(Lu)gsa
30、nd/oradditionalrequirements?enthepurchaserandthesupplierSurfaceintegrityLimitsforsurfacediscontinuitiesasspecifiedinISO6157-2AsagreedfAcceptabilityAcceptanceinspectionasspecifiedinISO3269aThethreadtoleranceclass6Gmaybespecifiedforthenutstobecoatedinaccordancewiththerelevantcoatingstandard(tolerances
31、otherthan6Hor6Garenotapplicableduetothespecifiedfunctionalpropertiestobeachieved).bShallbequenchedandtemperedinaccordancewithISO898-2(QTnuts).cThemostcommonstainlesssteelgradesareA2andA4;however,dependingontheapplication,itcanbenecessarytoselectothergradesinISO3506-2suitablefortheservicecorrosiveenv
32、ironment.SeealsoISO3506-6fortheselectionofsuitablestainlesssteelgrades.dToday,noInternationalStandardexistsforprevailingtorquetestmethodandfunctionalpropertiesofstainlesssteelnuts;nationalstandardsorothertechnicalspecifications,e.g.NFE25-035-2,shouldbeconsultedandagreementshouldbereachedbetweenthepu
33、rchaserandthemanufacturerbeforetheorder.eSeee.g.ISO16048.fSeee.g.ISO6157-2.6 Markingandlabelling6.1 MarkingonproductMarkingshallbe: forsteelnuts,asspecifiedinISO898-2,and forstainlesssteelnuts,asspecifiedinISO3506-2.6.2 LabellingonpackageLabellingonthepackageshallbeinaccordancewithISO898-2orISO3506-
34、2,andshallincludeatleast: thereferencetothisdocument,i.e.ISO10512, thethreadsizeandfinepitchDP, thepropertyclassforsteelnuts, thegradeandpropertyclassforstainlesssteelnutsl thetypeofsurfacecondition(finishand/orcoating), themanufacturersand/ordistributorsidentificationand/orname, themanufacturinglot
35、numberasspecifiedinISO1891-4,and thequantityofpiecesinthepackage.7 DesignationThedesignationrequirementsasspecifiedinISO8991shallapplywith thepropertyclassforsteelnuts,asspecifiedinISO898-2,and thegradeandpropertyclassforstainlesssteelnuts,asspecifiedinISO3506-2.Whennospecificsurfacecondition(finish
36、and/orcoating)isspecifiedinthedesignation,steelnutsaredeliveredintheasprocessedconditionandstainlesssteelnutsinthecleanandbrightcondition.EXAMPLE 1 Aprevailingtorquehexagonregularnut(withnon-metallicinsertinaccordancewiththisdocument,withthreadsize12mmandfinepitchP=1,5mm(productgradeA),insteelandpro
37、pertyclass10,asprocessed,isdesignatedasfollows:PrevailingtorquehexagonregularnutISO10512-M12l,5-10EXAMPLE 2 Aprevailingtorquehexagonregularnut(withnon-metallicinsert)inaccordancewiththisdocument,withthreadsize20mmandfinepitchP=2mm(productgradeB,instainlesssteelofgradeA2andpropertyclass70,lubricated(
38、Lu),isdesignatedasfollows:PrevailingtorquehexagonregularnutISO10512-M202-A2-70-LuBibliography1 ISO3506-6,FastenersMechanicalpropertiesofcorrosion-resistantstainlesssteelfastenersPart6:GeneralrulesfortheselectionOfstainIesssteelsandnickelalloysforfasteners2 ISO8673,FastenersHexagonregularnuts(style1),withfinepitchthread3 ISO16048,Passivationofcorrosion-resistantstainless-steelfasteners4 NFE25-035-2,BoltedjointsPart2:PrevailingtorquestainlesssteelnutsFunctionalproperties,testmethodsfortorque/clampforce,prevailingtorquesandproofloadICS21.060.20Pricebasedon6pagesiso.orgISO2025Allrightsreserved
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