Designation:A66−07(Reapproved2013)StandardSpecificationforSteelScrewSpikes1ThisstandardisissuedunderthefixeddesignationA66;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.ThisstandardhasbeenapprovedforusebyagenciesoftheDepartmentofDefense.1.Scope1.1Thisspecificationcoverssteelscrewspikesusedasfasteningsbetweenrailroadrails,tieplates,andties.1.2Thevaluesstatedininch-poundunitsaretoberegardedasstandard.ThevaluesgiveninparenthesesaremathematicalconversionstoSIunitsthatareprovidedforinformationonlyandarenotconsideredstandard.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.2.ReferencedDocuments2.1ASTMStandards:2A370TestMethodsandDefinitionsforMechanicalTestingofSteelProductsA700PracticesforPackaging,Marking,andLoadingMeth-odsforSteelProductsforShipment3.OrderingInformation3.1Ordersforscrewspikesunderthisspecificationshallincludethefollowinginformationasappropriate:3.1.1Quantity(weight),3.1.2StyleofHead—A,B,orC3orother,includingdraw-ingsifnecessary,3.1.3TypeofPoint—pilotpointornotpointed,3.1.4Dimensions—diameterandlength,underhead,3.1.5SupplementaryRequirementiftoapply(seeS1)3.1.6CertificationandTestReport(see11.1).4.Manufacture4.1Thesteelshallbemadebyanyofthefollowingprocesses:electric-furnaceorbasic-oxygen.4.2Thesteelmaybecastbyacontinuousprocess,oriningots.4.3Theheadsandthreadsofthespikesmaybeformedbyhot-orcold-formingmethods.5.MechanicalRequirements5.1TensileRequirements:5.1.1Thematerialasrepresentedbyatensiontestofafull-sizefinishedspike,oraspecimenmachinedfromafinishedspike,shallconformtotherequirementsprescribedinTable1.5.1.2Tensiontestsoffull-sizespikesshallbepe...
