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
17、hna-z7min)forthenon-metallicinsertisidenticalforregular,highandthinnutsforagivendiameter.NutswithsizesDM5anddesignprinciplesinaccordancewithstyle0arespecifiedinAmleXA.WARNINGThinnuts(style0)haveareducedloadabilitycomparedtoregularorhighnuts,theyarenotdesignedtoprovideresistancetothreadstripping(see
18、ISO898-2).Ifincertaincasesotherspecificationsarerequested,stainlesssteelgradesandpropertyclassescanbeselectedfromISO3506-2.2 NormativereferencesThefollowingdocumentsarereferredtointhetextinsuchawaythatsomeoralloftheircontentconstitutesrequirementsofthisdocument.Fordatedreferences,onlytheeditioncited
19、applies.Forundatedreferences,thelatesteditionofthereferenceddocument(includinganyamendments)applies.ISO225,FastenersBolts,screws,studsandnutsSymbolsanddescriptionsOfdimensionsISO898-2,FastenersMechanicalpropertiesOffastenersmadeofcarbonsteelandalloysteelPart2:NutswithspecifiedpropertyclassesISO965-1
20、ISOgeneralpurposemetricscrewthreadsTolerancesPart1:PrinciplesandbasicdataISO1891-4,FastenersVocabularyPart4:Control,inspection,delivery,acceptanceandqualityISO2320,FastenersPrevailingtorquesteelnutsFunctionalpropertiesISO3269,FastenersAcceptanceinspectionISO3506-2lFastenersMechanicalpropertiesofcor
21、rosion-resistantstainlesssteelfastenersPart2:NutswithspecifiedgradesandpropertyclassesISO4042,FastenersElectroplatedcoatingsystemsISO4759-llTolerancesforfastenersPart1:Bolts,screws,studsandnutsProductgradesA,BandCISO6157-2lFastenersSurfacediscontinuitiesPart2:NutsISO8991,Designationsystemforfastener
22、sISO8992,FastenersGeneralrequirementsforbolts,screws,studsandnutsISO10683lFastenersNon-electrolyticallyappliedzincflakecoatingsystems3 TermsanddefinitionsNotermsanddefinitionsarelistedinthisdocument.ISOandIECmaintainterminologydatabasesforuseinstandardizationatthefollowingaddresses:一ISOOnlinebrowsin
23、gplatform:availableathttps:/www.iso.org/ObPIECElectropedia:availableathttps:WWW.electropedia.org/4DimensionsDimensionsfornutswithsizesM5toM39shallbeinaccordancewithFigUre1andwithTableS1and2.DimensionsfornutswithsizesQVM5shallbeinaccordancewithAnneXA.SymbolsanddescriptionsOfdimensionsarespecifiedinIS
24、O225.aPrevailingtorquefeature:shapeatthediscretionofthemanufacturerwithamaximumdiameters.bThesenutsaremanufacturedwithoutwasher-face,unlessspecificallyagreedatthetimeoftheorder.Figure1Prevailingtorquethinnuts(withnon-metallicinsert)Table 1 DimensionsfornutsM5toM16(productgradeA)Dimensionsinmillimetr
25、esThread,DM5M6(M7)M8MlOM12(M14)M16Pa0,8111,251,51,7522max.5,756,757t758,7510,8012,9615,1217,28min.5l006,007,008,0010,0012,0014,0016l00dwmin.7,208,889,6311,6314,6316,6319,6422,49emin.8,7911,0512,1214,3817,7720,0323,3626,75,nom.=max.jh5,006,006,466,768,5610,23lll3212,42rlmin.4,525,525,886,187,989,5310
26、2211,32mmin.2,452,903,403,704,705l706,427,42mwmin.1,962,322,722,963,764,565,145,94nom.=max.8,0010,0011,0013,0016,0018,0021l0024,00Smin.7,789,7810,7312,7315,7317,7320,6723,67Sizesshowninbracketsarenon-preferred.aPiSthepitchofthethread.bThefollowingtolerancesapply:hl5forDM12andhl6forM12DM18.Table 2 D
27、imensionsfornutsM18toM39(productgradeB)DimensionsinmillimetresThread,D(M18)M20(M22)M24(M27)M30(M33)M36(M39)Pa2,52,52,5333,53,544max.19,4421,6023,7625,9229,1632,4035,6438,8842,124amin.18,0020,0022,0024,0027,0030,0033,0036,0039,00dwmin.24,8527f7031,3533,2538,0042,7546,5551,1155,86emin.29,5632,9537,293
28、9,5545,2050,8555,3760,7966,44nom.=max.14,5215,2016,8017,8019,8022,2023,7026,4028,30numin.13,4213,4015,0016,0017,7020l1021,6024,3026,20mmin.8,429,109,9010,9012,4013,9015,4016,9018,20AnWmin.6,747,287,928,729,92lll1212,3213,5214,56nom.=max.27,0030,0034,0036,0041,0046,0050,0055,0060,00Smin.26,1629,1633,
29、0035,0040,0045,0049,0053,8058,80Sizesshowninbracketsarenon-preferred.aPiSthepitchofthethread.bThefollowingtolerancesapply:hl6forM12DM18andhl7forM18DM39.5 RequirementsandreferenceInternationalStandardsFornutswithsizesM5toM39,therequirementsspecifiedintheInternationalStandardsreferencedinTabIe3shallap
30、ply.FornutswithsizesDM5,AnneXAshallapply.Table3RequirementsandreferenceInternationalStandardsMaterialNutbodySteelStainlesssteelInserte.g.polyamideGeneralre-,11.InternationalStandardqurementsISO8992ThreadToleranceclass6HaInternationalStandardISO965-1MechanicalpropertiesStyle0PropertyclassM5DM3904b,05
31、cGradedandpropertyclassM5DM241111a44,D4-040,D6-040M24DM16:BInternationalStandardISO4759-1SurfaceconditionAsprocessed(nocoating)ElectroplatedcoatingsasspecifiedinISO4042Non-electrolyticallyappliedzincflakecoatingsasspecifiedinISO10683Otherfinishes,coatirshallbeagreedbetwCleanandbrightand/orPassivated
32、fand/orLubricated(Lu)gsand/oradditionalrequirementseenthepurchaserandthesupplierSurfaceintegrityLimitsforsurfacediscontinuitiesasspecifiedinISO6157-2AsagreedgAcceptabilityAcceptanceinspectionasspecifiedinISO3269aThethreadtoleranceclass6Gmaybespecifiedforthenutstobecoatedinaccordancewiththerelevantco
33、atingstandard(tolerancesotherthan6Hor6Garenotapplicableduetothespecifiedfunctionalpropertiestobeachieved).bShallnotbequenchedandtemperedinaccordancewithISO898-2(NQTnuts).cShallbequenchedandtemperedinaccordancewithISO898-2(QTnuts).dThemostcommonstainlesssteelgradesareA2andA4;however,dependingontheapp
34、lication,itcanbenecessarytoselecothergradesinISO3506-2suitablefortheseivicecorrosiveenvironment.SeealsoISO3506-6fortheselectionOfsuitablestainles：steelgrades.eToday,noInternationalStandardexistsforprevailingtorquetestmethodandfunctionalpropertiesofstainlesssteelnutsnationalstandardsorothertechnicals
35、pecifications,e.g.NFE25-035-2,shouldbeconsultedandagreementshouldbereachecbetweenthepurchaserandthesupplierbeforetheorder.fSeee.g.ISO16048.gSeee.g.ISO6157-2.6 Markingandlabelling6.1 MarkingonproductMarkingshallbe:一forsteelnutslasspecifiedinISO898-2,andforstainlesssteelnuts,asspecifiedinISO3506-2.6.2
36、 LabellingonpackageLabellingonthepackageshallbeinaccordancewithISO898-2orISO3506-2landshallincludeatleast: thereferencetothisdocument,i.e.ISO10511,一thethreadsizeD, thepropertyclassforsteelnuts, thegradeandpropertyclassforstainlesssteelnutsl thetypeofsurfacecondition(finishand/orcoating), themanufact
37、urersand/ordistributorsidentificationand/orname, themanufacturinglotnumberasspecifiedinISO1891-4,and thequantityofpiecesinthepackage.7 DesignationThedesignationrequirementsasspecifiedinISO8991shallapplywith thepropertyclassforsteelnutslasspecifiedinISO898-2,and thegradeandpropertyclassforstainlessst
38、eelnuts,asspecifiedinISO3506-2.Whennospecificsurfacecondition(finishand/orcoating)isspecifiedinthedesignation,steelnutsaredeliveredintheasprocessedconditionandstainlesssteelnutsinthecleanandbrightcondition.EXAMPLE 1 Aprevailingtorquehexagonthinnut(withnon-metallicinsert)inaccordancewiththisdocument,
39、withthreadsizeM12(productgradeA,insteelandpropertyclass05,asprocessed,isdesignatedasfollows:PrevailingtorquehexagonthinnutISO10511-M12-05EXAMPLE 2 Aprevailingtorquehexagonthinnut(withnon-metallicinsert)inaccordancewiththisdocument,withthreadsizeM20(productgradeB),instainlesssteelofgradeA2andproperty
40、class040,lubricated(Lu),isdesignatedasfollows:PrevailingtorquehexagonthinnutISO10511-M20-A2-040-LuAnnexA(normative)ThinnutsinsteelandstainlesssteelwithDM5notincludedinISO898-2andISO3506-2A.lDesignofhexagonthinnuts(style0)Hexagonthinnuts(style0)havebeendesignedinaccordancewiththefollowing: thinnutswi
41、thsizesOVM5haveaminimumheightmnin0,45。，inaccordancewithISO898-2andISO3506-2; mechanicalpropertiesarenotincludedinISO898-2andISO3506-2forthinnutswithsizesDM5,theyarespecifiedinthisAnneXA.A.2DimensionsDimensionsshallbeinaccordancewithFigUre1andTableA.l.TableA.lNutsM3andM4(productgradeA)Dimensionsinmil
42、limetresThread,DM3M4Pa0,50,7max.3,454,60min.3,004,00wmin.4,846,20emin.6,017z66anom.=max.3,905,00min.3,424,52mmin.1,551,95min.1,241,56nom.=max.5,507,00Smin.5,326l78aPiSthepitchofthethread.bThefollowingtoleranceapplies:hl5forDM12.A.3RequirementsandreferenceInternationalStandardsForthinnutswithsizesDM5
43、therequirementsspecifiedintheInternationalStandardsreferencedinTabIeA.2shallapply.TableA.2RequirementsandreferenceInternationalStandardsNutbodySteelStainlesssteelMaterialInserte.g.polyamideGeneralre-t,1.4InternationalStandardqurementsISO8992Toleranceclass6HanreaInternationalStandardISO965-1Style0Pr
44、opertyclass.1SymbolDM504b,05CpropertiesGradecandpropertyclassSymbolA2-035,A4-035,A4-040,“MnD4.040,D6-040InternationalStandardTableA.3andISO898-2TableA.3andISO3506-2Functional4,.InternationalStandardpropertiesTestmethod:ISO2320Performances:asagreedAsagreedeProductgradeDM5:A(exceptforcwmin=smin-IT15)O
45、ierancesInternationalStandardISO4759-1SurfaceconditionAsprocessed(nocoating)ElectroplatedcoatingsasspecifiedinISO4042Non-electrolyticallyappliedzincflakecoatingsasspecifiedinISO10683Otherfinishes,coatingsanshallbeagreedbetweentCleanandbrightand/orPassivatedfand/orLubricated(Lu)d/oradditionalrequirementsIepurchaserandth
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