Designation:D5648−01(Reapproved2014)StandardTestMethodforTorque-TensionRelationshipofAdhesivesUsedonThreadedFasteners(Lubricity)1ThisstandardisissuedunderthefixeddesignationD5648;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thistestmethodcoversthedeterminationofthetorque-tensionrelationship(lubricity)ofadhesivesusedforlockingandsealingthreadedfasteners.1.2Thevaluesstatedininch-poundunitsaretoberegardedasstandard.ThevaluesgiveninparenthesesaremathematicalconversionstoSIunitsthatareprovidedforinformationonlyandarenotconsideredstandard.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.2.ReferencedDocuments2.1ASTMStandards:2D907TerminologyofAdhesives2.2SocietyofAutomotiveEngineersStandards:SAEJ174TorqueTensionTestProcedureforSteelThreadedFasteners3SAEJ429MechanicalandMaterialRequirementsforExter-nallyThreadedFasteners32.3FederalSpecification:FF-N-836Nut:Square,Hexagon,Cap,Slotted,Castle,Knurled,WeldingandSingleBallSeat43.Terminology3.1Definitions—ManyofthetermsinthistestmethodaredefinedinTerminologyD907.4.SummaryofTestMethod4.1Thistestmethodconsistsofapplyingadhesivetoathreadedfastenerandmeasuringthedevelopedtensionappliedtothefasteneratspecifiedtorques.Alternatively,thetorquerequiredtoreachspecifiedlevelsofbolttensionmaybemeasured.5.SignificanceandUse5.1Onsomeapplicationsofthreadedfasteners,itisdesir-abletocontroleithertheamountofdevelopedtensionwhenaspecifiedrangeoftorquehasbeenappliedorthetorquerequiredtodevelopaspecifiedrangeoftension.Thistestmethodisusedtodeterminetheeffectofusingadhesivesonthetorque-tensionrelationshipofthreadedfasteners.5.2Accuratetorq...
