Designation:F2215−08StandardSpecificationforBalls,Bearings,FerrousandNonferrousforUseinBearings,Valves,andBearingApplications1ThisstandardisissuedunderthefixeddesignationF2215;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.ThisstandardhasbeenapprovedforusebyagenciesoftheU.S.DepartmentofDefense.1.Scope1.1Thisspecificationcoversrequirementsforferrousandnonferrousinchballs.Theballscoveredinthisspecificationareintendedforuseinbearings,bearingapplications,checkvalves,andothercomponentsusingballs.1.2Thisisageneralspecification.TheindividualitemrequirementsshallbeasspecifiedhereininaccordancewiththeAnnexA2throughAnnexA9MSsheetstandards.IntheeventofanyconflictbetweenrequirementsofthisspecificationandtheAnnexA2throughAnnexA9MSsheetstandards,thelattershallgovern.1.3Thevaluesstatedininch-poundunitsaretoberegardedasstandard.ThevaluesgiveninparenthesesaremathematicalconversionstoSIunitsthatareprovidedforinformationonlyandarenotconsideredstandard.1.4ThisspecificationcontainsmanyoftherequirementsofMIL-B-1083,whichwasoriginallydevelopedbytheDepart-mentofDefenseandmaintainedbytheDefenseSupplyCenterRichmond.ThefollowinggovernmentactivitycodesmaybefoundintheDepartmentofDefense,StandardizationDirectorySD-1.2PreparingActivityCustodiansReviewActivitiesDLA-GSArmy-ATArmy-AV,EA,AR,MINavy-OSNavy-SHAirForce-99AirForce-11,841.5Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatoryrequirementspriortouse.2.ReferencedDocuments2.1ASTMStandards:3A108SpecificationforSteelBar,CarbonandAlloy,Cold-FinishedA276SpecificationforStainlessSteelBarsandShapesA295SpecificationforHigh-CarbonAnti-FrictionBearingSteelB21/B21MSpecificationforNa...
