WORLDWIDEFASTENERSTANDARD
WA900Date:2019-08-25
DIMENSIONALREQUIREMENTSOFHEXAGONBOLTS,FLANGEDHEXAGONBOLTSAND
HEXAGONBOLTWASHERASSEMBLIES
1.SCOPE
Thisstandardgivesdimensionalrequirementsforhexagonbolts,flangedhexagonboltsandboltwasher
assemblieswithISOmetricthreaddiametersM4toM24inclusiveforhexagonboltsandM5toM16inclusivefor
flangedhexagonbolts.
2.REFERENCES
ISO261Generalpurposemetricscrewthreads-Generalplan.
ISO965Generalpurposemetricscrewthreads-Tolerances.
ISO1502Generalpurposemetricscrewthreads-Gauging.
ISO4014ProductgradeAfortheheadofhexagonheadedproducts.
ISO4017ProductgradeAforthefullythreadedshankportionofhexagonandhexagonflangeheaded
bolts.
ISO4753Fasteners-EndsofpartswithexternalMetricISOthread.
ISO6157-3Fasteners–Surfacediscontinuities.
ISO15071Hexagonboltswithflange–Smallseries–ProductgradeA.
WA950MaterialRequirementsMechanicalPropertiesofBolts,Studs,andBoltWasher
Assemblies.
WA990SurfaceDiscontinuitiesofBoltsandScrews.
WF900Dimensional,Material,HeatTreatment,HardnessandPerformanceRequirementsforFlat,
Toothed,Conical,BowedandWavyWashersforgeneraluseandforuseinScreworNut
andWasherAssemblies.
3.GENERALREQUIREMENTS
3.1DIMENSIONSANDTOLERANCES