WORLDWIDEFASTENERSTANDARD

2005-02-01

WA950MaterialRequirementsandMechanicalPropertiesofBolts,Studs,andBoltWasherAssemblies.

1.SCOPE.

Thisstandardspecifiesthedesigninformationrelatingtomaterialrequirementsandmechanicalpropertiesfor

bolts,studs,andboltwasherassemblieswhentestedatroomtemperature(ISO1).

NOTE:AllrequirementsofISO898/1applyunlessotherwisespecifiedinthisstandard.

2.REFERENCES.

ISO1Standardreferencetemperatureforindustriallengthmeasurements.

ISO898/1Mechanicalpropertiesoffasteners-Part1:Bolts,screwsandstuds.

SAE/USCAR-8GrainFlowPatternforBoltsandScrews.

WA990Surfacediscontinuitiesofboltsandstuds.

WF900Dimensional,material,heattreatment,hardnessandperformancerequirementsforflat,

toothed,conical,bowedandwavywashers.

3.MECHANICALPROPERTIES.

Bolts,studs,andboltwasherassembliesshallhavethemechanicalpropertiesasspecifiedinISO898Part

1.

Boltwasherassembliesshallbetestedintheassembledwasherformwhereverpossible.Wherethe

conditionsofagiventestsodictate,thewashercomponentmayrequireremoval.

4.MINIMUMULTIMATETENSILELOADSANDPROOFLOADS.

TheminimumtensileloadsandproofloadtablesinthestandardhavebeenprovidedtoassistDesign

Engineers.Thetablesshowpropertyclasses4.8,8.8and10.9,andaretheonlypropertyclassespermitted

forthroughhardenedFordworldwidefasteners.Property