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MECHANICALPROPERTIESOFFASTENERSMADEOFCARBONSTEELANDALLOYSTEELPART3WASHERS1SCOPETHISPARTOFISO898SPECIFIESMECHANICALANDPHYSICALPROPERTIESOFFLATWASHERS,DESIGNEDTOBEUSEDINBOLTEDJOINTSINCOMBINATIONWITHBOLTS,SCREWS,STUDSANDNUTSWITHASPECIFIEDPROPERTYCLASSINACCORDANCEWITHISO8981ANDISO8982NOTE1THESETYPESOFWASHERSMAYALSOBEUSEDWITHOTHERFASTENERSSUCHASSCREWSFORMINGTHEIROWNMATINGTHREADWASHERSTHATCONFORMTOTHEREQUIREMENTSOFTHISPARTOFISO898AREEVALUATEDATANAMBIENTTEMPERATURERANGEOF10CTO35CTHESEWASHERSAREUSEDINAPPLICATIONSATLOWORELEVATEDTEMPERATURESUPTOAMAXIMUMTEMPERATUREOF300C,HOWEVERSEENOTE2NOTE2WHENDETERMININGAPPROPRIATECHOICESFORAGIVENAPPLICATION,USERSAREADVISEDTOCONSULTANEXPERIENCEDFASTENEREXPERTFORSEVEREENVIRONMENTALAPPLICATIONSINCLUDINGTEMPERATURESOUTSIDETHERANGEOF50CTO150CTHISPARTOFISO898ISAPPLICABLETOTHEFOLLOWINGFLATCAPTIVEANDNONCAPTIVEWASHERSMADEOFCARBONSTEELORALLOYSTEEL,WITHTHICKNESSFROM0,2MMTO12MMPLAINWASHERSWITHORWITHOUTKNURLS,RIBBEDORCHAMFERSSQUAREWASHERSSQUAREHOLEWASHERSSHAPEDPLATESITDOESNOTSPECIFYREQUIREMENTSFORSUCHPROPERTIESASCORROSIONRESISTANCEWELDABILITYNOTE3WHENDESIGNINGCRITICALAPPLICATIONS,USERSAREADVISEDTOCONSULTAFASTENEREXPERT2NORMATIVEREFERENCESTHEFOLLOWINGDOCUMENTS,INWHOLEORINPART,ARENORMATIVELYREFERENCEDINTHISDOCUMENTANDAREINDISPENSABLEFORITSAPPLICATIONFORDATEDREFERENCES,ONLYTHEEDITIONCITEDAPPLIESFORUNDATEDREFERENCES,THELATESTEDITIONOFTHEREFERENCEDDOCUMENTINCLUDINGANYAMENDMENTSAPPLIESISO8981,MECHANICALPROPERTIESOFFASTENERSMADEOFCARBONSTEELANDALLOYSTEELPART1BOLTS,SCREWSANDSTUDSWITHSPECIFIEDPROPERTYCLASSESCOARSETHREADANDFINEPITCHTHREADISO8982,MECHANICALPROPERTIESOFFASTENERSMADEOFCARBONSTEELANDALLOYSTEELPART2NUTSWITHSPECIFIEDPROPERTYCLASSESCOARSETHREADANDFINEPITCHTHREADISO65071,METALLICMATERIALSVICKERSHARDNESSTESTPART1TESTMETHODDRAFTINTERNATIONALSTANDARDISO/DIS89832017EISO2017ALLRIGHTSRESERVED1EDINENISO8983201703ENTWURFISO/DIS89832017EISO65081,METALLICMATERIALSROCKWELLHARDNESSTESTPART1TESTMETHODISO10644,SCREWANDWASHERASSEMBLIESMADEOFSTEELWITHPLAINWASHERSWASHERHARDNESSCLASSES200HVAND300HVISO10669,PLAINWASHERSFORTAPPINGSCREWANDWASHERASSEMBLIESNORMALANDLARGESERIESPRODUCTGRADEAISO10673,PLAINWASHERSFORSCREWANDWASHERASSEMBLIESSMALL,NORMALANDLARGESERIESPRODUCTGRADEAISO10684,FASTENERSHOTDIPGALVANIZEDCOATINGSISO16426,FASTENERSQUALITYASSURANCESYSTEMISO18265,METALLICMATERIALSCONVERSIONOFHARDNESSVALUES3SYMBOLSTNOMINALTHICKNESSOFFLATWASHER,INMILLIMETRETEFFEFFECTIVETHICKNESSOFTHEMATERIALMEASUREDONTHEWASHER,INMILLIMETRE4DESIGNATIONSYSTEMFORPROPERTYCLASSESOFWASHERSANDCOMBINATIONWITHPROPERTYCLASSESOFBOLTS,SCREWS,STUDSANDNUTSTHESYMBOLFORPROPERTYCLASSESOFWASHERSISCOMPOSEDOFTWOPARTSTHENUMBERTOTHELEFTISTHEMINIMUMVICKERSHARDNESSVALUEACCORDINGTOTABLE3THELETTERSHVTOTHERIGHTISTHEABBREVIATIONOFVICKERSHARDNESSEXAMPLEASTEELFLATWASHERWITHAMINIMUMVICKERSHARDNESSOF200ACCORDINGTOTABLE3HASTHEPROPERTYCLASSDESIGNATION200HVTHEDESIGNATIONSYSTEMOFTHISPARTOFISO898MAYBEAPPLIEDFORSIZESOUTSIDETHESCOPEOFTHISPARTOFISO898EGFORWASHERWITHTHICKNESST12MMPROVIDEDALLAPPLICABLEREQUIREMENTSINACCORDANCEWITHTABLES2AND3AREMETALTHOUGHAGREATNUMBEROFPROPERTYCLASSESARESPECIFIEDINTHISPARTOFISO898,THISDOESNOTMEANTHATALLPROPERTYCLASSESAREAPPROPRIATEFORALLWASHERSAND/ORFORALLBOLTS/NUTS/WASHERSASSEMBLIESTHECOMBINATIONOFPROPERTYCLASSESFORFLATWASHERSWITHBOLTS,SCREWS,STUDSANDNUTSISSPECIFIEDINTABLE1TABLE1COMBINATIONOFPROPERTYCLASSESOFFLATWASHERSEGPLAINWASHERSWITHPROPERTYCLASSESOFBOLTS,SCREWS,STUDSANDNUTSTHREADEDFASTENERSINACCORDANCEWITHISO8981ANDISO8982MATINGPROPERTYCLASSESFORFLATWASHERSPROPERTYCLASSES100HV200HVA300HVA420HVBCBOLTS,SCREWSANDSTUDSREGULARANDHIGHNUTSHV13010ISO2017ALLRIGHTSRESERVEDEDINENISO8983201703ENTWURFISO/DIS89832017EKEY1MEASUREMENTPOINTOFHARDNESSLOCATEDATTHECENTREOFTHECROSSSECTIONTHROUGHTHEWASHER2MEASUREMENTHARDNESSPOINTAT0,1MMFROMTHEBEARINGSURFACE3BEARINGSURFACEFRACTURESSURFACESARENOTINCLUDEDFIGURE3HARDNESSDETERMINATIONFORDECARBURIZATIONANDCARBURIZATIONTEST7233REQUIREMENTSTHEVICKERSHARDNESSVALUEATPOINT2,HV2INFIGURE3,SHALLBEGREATERTHANOREQUALTOTHEVICKERSHARDNESSATPOINT1,HV1INFIGURE3,MINUS30VICKERSUNITSNOTECOMPLETEDECARBURIZATIONUPTOTHEMAXIMUMSPECIFIEDINTABLE3CANNOTBEDETECTEDBYTHEHARDNESSMEASUREMENTMETHOD73CARBURIZATIONTEST731GENERALTHEPURPOSEOFTHECARBURIZATIONTESTISTODETECTIFTHEBEARINGSURFACESOFTHEWASHERSISCARBURIZEDDURINGTHEHEATTREATMENTCARBURIZATIONSHALLBEDETECTEDBYHARDNESSTESTONARADIALSECTIONTHROUGHTHEHOLEAXISTHISTESTAPPLIESTOKNURLEDORRIBBEDWASHERSWITHPROPERTYCLASS300HV,TOALLWASHERSOFPROPERTYCLASS420HV,ANDFORWASHERSWITHAMINIMUMTHICKNESSOF0,4MMINCLUDED732TESTPROCEDURETHETESTSPECIMENSHALLBEPREPAREDINACCORDANCEWITH7222,BUTETCHINGISNOTNECESSARYTHEVICKERSHARDNESSSHALLBEDETERMINEDATPOINTS1AND2INACCORDANCEWITHFIGURE3THETESTFORCESHALLBE2,942NVICKERSHARDNESSTESTHV0,3733REQUIREMENTSTHEVICKERSHARDNESSVALUEATPOINT2,HV2INFIGURE3,SHALLBELESSTHANOREQUALTOTHEVALUEATPOINT1,HV1INFIGURE3,PLUS30VICKERSUNITSANINCREASEOFMORETHAN30VICKERSUNITSINDICATESCARBURIZATIONISO2017ALLRIGHTSRESERVED11EDINENISO8983201703ENTWURFISO/DIS89832017EINADDITIONTOTHISREQUIREMENT,THEHARDNESSONTHEWASHERBEARINGSURFACESHALLNOTEXCEED370HV0,3FORPROPERTYCLASS300HV,AND490HV0,3FORPROPERTYCLASS420HVASSPECIFIEDINTABLE374RETEMPERINGTEST741GENERALTHEPURPOSEOFTHISTESTISTOCHECKTHATTHEMINIMUMTEMPERINGTEMPERATUREHASBEENACHIEVEDDURINGTHEHEATTREATMENTPROCESSTHISTESTAPPLIESTOWASHERSWITHPROPERTYCLASSES300HVAND420HVTHISTESTSHALLBEPERFORMEDONLYINCASEOFDISPUTE742TESTPROCEDURETHEVICKERSHARDNESSSHALLBEDETERMINEDINACCORDANCEWITH7121BYTAKING3READINGSINPOINT1OFFIGURE3THEWASHERSHALLBERETEMPEREDBYHOLDINGITFOR30MINUTESATAPARTTEMPERATUREOF10CLESSTHANTHEMINIMUMTEMPERINGTEMPERATURESPECIFIEDINTABLE2AFTERRETEMPERING,THEVICKERSHARDNESSSHALLBEDETERMINEDBYTAKING3NEWREADINGSONTHESAMEWASHERANDINTHESAMEAREAASFORTHEFIRSTDETERMINATION743REQUIREMENTSTHEAVERAGEOFTHE3HARDNESSREADINGSTAKENBEFOREANDAFTERRETEMPERINGSHALLBECOMPAREDTHEREDUCTIONOFHARDNESSAFTERRETEMPERING,IFANY,SHALLBELESSTHAN20VICKERSUNITS8MARKING81GENERALWASHERSMANUFACTUREDTOTHEREQUIREMENTSOFTHISPARTOFISO898SHALLBEDESIGNATEDINACCORDANCEWITHTHEPROPERTYCLASSASSPECIFIEDINCLAUSE4,ONLYIFALLRELEVANTREQUIREMENTSOFTHISPARTOFISO898AREMET82MARKINGOFWASHERSWASHERSCANBEMARKEDATTHEDISCRETIONOFTHEMANUFACTURER,ORIFAGREEDBETWEENTHEPURCHASERANDTHESUPPLIERATTHETIMEOFTHEORDEREMBOSSEDMARKINGSHALLNOTBEUSEDFORWASHERSINDENTEDMARKINGISUSUALLYNOTRECOMMENDED,BECAUSEITCOULDALTERTHETORQUE/CLAMPFORCERELATIONSHIPOFTHEBOLT/NUTASSEMBLY,ORCOULDCREATEASTRESSCONCENTRATIONPOINTWHICHMAYINITIATECRACKINGHOWEVER,MARKINGCOULDBEMADEBYOTHERPROCESSESRESULTINGINDURABLEIDENTIFICATION,SUCHASLASERMARKINGMARKINGSHOULDINCLUDETHEMANUFACTURERSIDENTIFICATIONMARKAND/ORTHEPROPERTYCLASSADISTRIBUTORWHODISTRIBUTESWASHERSTHATAREMARKEDWITHHISOWNIDENTIFICATIONMARKSHALLBECONSIDEREDTOBETHEMANUFACTURERWHENPROPERTYCLASSMARKINGISPRESENT,ITSHALLBEINACCORDANCEWITHTABLE6ANDCONSISTSEITHERINTHEPROPERTYCLASSITSELF,THEPROPERTYCLASSSYMBOLORTHECLOCKFACESYSTEM12ISO2017ALLRIGHTSRESERVEDEDINENISO8983201703ENTWURFISO/DIS89832017ETABLE6CLOCKFACESYSTEMFORMARKINGWASHERSPROPERTYCLASS100HV200HV300HV420HVPROPERTYCLASSSYMBOL100200300420CLOCKFACESYSTEMNOTETHEDASHISPOSITIONEDINORDERTOINDICATETHERECOMMENDEDCOMBINATIONRCSPECIFIEDINTABLE1FORTHERELEVANTMATINGPROPERTYCLASSOFBOLTSANDNUTSEGWASHERSOFPROPERTYCLASS300HVAREDESIGNEDTOBEMATEDWITHBOLTSOFPROPERTYCLASS109ANDNUTSOFPROPERTYCLASS10,THEREFORETHEDASHFOR300HVISPLACEDATTHE10OCLOCKPOSITIONATHETWELVEOCLOCKPOSITIONSHALLBEMARKEDWITHEITHERTHEMANUFACTURERSIDENTIFICATIONMARKORBYAPOINTBTHEPROPERTYCLASSSHALLBEMARKEDWITHADASHTHELENGTHANDDEPTHAREATTHEMANUFACTURERSDISCRETION83MARKINGOFPACKAGESALLPACKAGESFORWASHERS,ASDESCRIBEDINTHESCOPEANDWITHALLPROPERTYCLASSESSHALLBEMARKEDEGTHROUGHLABELLINGTHEMARKINGSHALLINCLUDETHEMANUFACTURERSAND/ORDISTRIBUTORSIDENTIFICATIONANDTHEPROPERTYCLASSASSPECIFIEDINCLAUSE5,ASWELLASTHEMANUFACTURINGLOTNUMBERASDEFINEDINISO16426ISO2017ALLRIGHTSRESERVED13EDINENISO8983201703ENTWURFISO/DIS89832017EANNEXANORMATIVEDUCTILITYTESTFORWASHERSOFPROPERTYCLASS420HVA1GENERALTHEPURPOSEOFTHEDUCTILITYTESTISTODETERMINETHATWASHERSHAVENOTBECOMEBRITTLEDURINGTHEMANUFACTURINGPROCESSTHISTESTAPPLIESTOWASHERSAFTERCOATING,INANY,WHENSPECIFICALLYREQUIREDBYTHECUSTOMERATTHETIMEOFTHEORDERA2TESTPROCEDURETHETESTISCARRIEDOUTUSINGASUPPORTINGPARTANDAPRESSUREPARTWITHANANGLEDEPENDINGOFTHETHICKNESSOFWASHERSTHESUPPORTINGANDPRESSUREPARTSSHALLHAVEAHARDNESSOF60HRCMINIMUMANDTHEIRSURFACESSHALLBEGROUNDFORROUNDCONCENTRICWASHERS,THECONTACTSURFACEOFTHESUPPORTINGANDPRESSUREPARTSSHALLHAVEACONICALSHAPEASPERFIGUREA1FORALLOTHERWASHERSEGSQUARE,RECTANGULARTHESURFACESSHALLHAVEAVSHAPEASPERFIGUREA2THEWASHERTOBETESTEDSHALLBEPLACEDINTHETESTDEVICEASSHOWNINFIGUREA1ANDFIGUREA2FORCAPTIVEWASHER,ITSHALLBEDISASSEMBLEDFROMTHEBOLTORNUTBEFORETESTINGTHEAXISOFTHESUPPORTINGANDPRESSUREPARTSANDTHEAXISOFTHEWASHERSHALLREMAINALIGNEDBEFOREANDDURINGTHETEST14ISO2017ALLRIGHTSRESERVEDEDINENISO8983201703ENTWURFISO/DIS89832017EKEY120FORWASHERSTHICKNESSLESSTHAN4MM160FORWASHERSTHICKNESSMORETHAN4MMINCLUDED1FORCEFIGUREA1EXAMPLEOFCONICALSHAPETESTINGDEVICEFORROUNDCONCENTRICWASHERSISO2017ALLRIGHTSRESERVED15EDINENISO8983201703ENTWURFISO/DIS89832017EKEY120FORWASHERSTHICKNESSLESSTHAN4MMRADIUSR4MM160FORWASHERSTHICKNESSMORETHAN4MMINCLUDEDRADIUSR8MM1FORCEFIGUREA2EXAMPLEOFVSHAPETESTINGDEVICEFORNOTROUNDCONCENTRICWASHERSANAXIALTESTFORCESHALLBESTEADILYAPPLIEDUNTILTHESURFACESOFTHESUPPORTINGANDPRESSUREPARTSAREINFULLCONTACTWITHTHEBEARINGSURFACESOFTHEWASHERAFTE
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