Designation:F844−07a(Reapproved2013)StandardSpecificationforWashers,Steel,Plain(Flat),UnhardenedforGeneralUse1ThisstandardisissuedunderthefixeddesignationF844;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thisspecificationcoversroundandmiscellaneousshapesteelplain(flat)washersfurnishedinanunhardenedcondition.1.2Thewashersareintendedforgeneralusebolt,nut,andstudapplicationstoprovideincreasedbearingsurface,spacing,andtopreventgalling.1.3Unlessotherwisespecified,thewashersarefurnishedwithdimensionsconformingtoB18.22.1,TypeA,Tables1AandTables1B.1.4Hardenedwashersforusewithheat-treatedstructuralboltsarecoveredbySpecificationsF436andF436M.1.5Thevaluesstatedininch-poundunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.2.ReferencedDocuments2.1ASTMStandards:2A29/A29MSpecificationforGeneralRequirementsforSteelBars,CarbonandAlloy,Hot-WroughtA568/A568MSpecificationforSteel,Sheet,Carbon,Structural,andHigh-Strength,Low-Alloy,Hot-RolledandCold-Rolled,GeneralRequirementsforA751TestMethods,Practices,andTerminologyforChemi-calAnalysisofSteelProductsB633SpecificationforElectrodepositedCoatingsofZinconIronandSteelB695SpecificationforCoatingsofZincMechanicallyDe-positedonIronandSteelD3951PracticeforCommercialPackagingF436SpecificationforHardenedSteelWashersF436MSpecificationforHardenedSteelWashers(Metric)F606TestMethodsforDeterminingtheMechanicalProper-tiesofExternallyandInternallyThreadedFasteners,Washers,DirectTensionIndicators,andRivetsF1470PracticeforFastenerSamplingforSpecifiedMe-chanicalPropertiesandPerformanceInspectionF2329SpecificationforZincCoating,Hot-Dip,Require-mentsforApplicationtoCarbonandAlloySteelBolts,Screws,Washers,Nuts,andSpecialThreadedFasteners2.2ASMEStandards:3B18.22.1PlainWashersB18.24PartIdentifyingNumber(PIN)...
