Designation:D3474−90(Reapproved2012)StandardPracticeforCalibrationandUseofTorqueMetersUsedinPackagingApplications1ThisstandardisissuedunderthefixeddesignationD3474;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thispracticecoversthecalibrationanduseoftorquemetersofthetypenormallyusedinpackagingapplications.1.2Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.2.ReferencedDocuments2.1ASTMStandards:2D3198TestMethodforApplicationandRemovalTorqueofThreadedorLug-StyleClosures3.Terminology3.1Definitions—Fordefinitionsofapplicationtorqueandremovaltorque,seeTestMethodD3198.3.1.1strippingtorque—aforceorsystemofforcesactinginatighteningdirectionthatcausesoverrunningofthethreadsorrotationofanovershellwithrespecttoitssupportingmember.4.SummaryofPractice4.1Calibration—Referencetorquevaluesareobtainedbymeansofverticallysuspendeddeadweightsactingatspecificdistancesfromtheaxisofthemountingplatformofthetester.4.2Use—Torquevaluestoapplyorremoveclosuresareobtainedbymountingcontainersontheplatformandeitherapplyingorremovingtheclosures.Insomeapplications,theclosureismountedontheplatformandthecontainerisrotated.5.SignificanceandUse5.1Thispracticecanbeusedtocheckdevicesusedtomeasuretheapplicationandremovaltorquesofcontinuousorintermittentthreadandlugclosures.5.2Thispracticecanbeusedtodeterminetheamountoftorquetoeitherapplyorremoveaclosure.6.Apparatus6.1Adapter—Acircularplatethatcanbemountedconcen-tricallyontheplatformofthetester.Iftheplatformitselfissuitable,anadapterisnotnecessary.Theadaptershouldbeofsuchdiameterthatitsradiusmultipliedbyappropriateweightswillgivetorquevaluesequa...
