Designation:D204−02(Reapproved2021)StandardTestMethodsforSewingThreads1ThisstandardisissuedunderthefixeddesignationD204;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.ThisstandardhasbeenapprovedforusebyagenciesoftheU.S.DepartmentofDefense.1.Scope1.1Thesetestmethodscanbeusedtoevaluatesewingthreadsofanyfiber.1.1.1Thetestmethodsinthisstandardareintendedtoevaluateonlysewingthreadtakenfromthreadholders.1.2Thesetestmethodsonlyprovideforthemeasurementofsewingthreadphysicalproperties.Thesetestmethodsdonotaddressanyotherpropertiesthatmaybeimportantforthesatisfactoryperformanceofsewingthreadsunderparticularenduseconditions.1.3Thesetestmethodscanbeusedtomeasurethefollow-ingproperties:SectionsColorfastnesstoDrycleaning73–83ColorfastnesstoLaundering62–72ColorfastnesstoWaterMigration84–94Diameter43–50LengthperThreadHolder34–42Shrinkage,SingleStrand51–61DryHeat58.1BoilingWater58.2StrengthandElongation15–21SingleStrand—Conditioned19.1.1SingleStrand—Wet19.1.2LoopStrength19.2KnotStrength19.3Twist22–27TwistBalance28–33YarnNumber7–14NOTE1—Formethodscoveringtestsonpreparedseams,refertoTestMethodsD1683/D1683MandD3940.1.4ThevaluesstatedinSIunitsaretoberegardedasstandard.ThevaluesgiveninparenthesesafterSIunitsareprovidedforinformationonlyandarenotconsideredstandard.1.5Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafety,health,andenvironmentalpracticesanddeter-minetheapplicabilityofregulatorylimitationspriortouse.1.6Thisinternationalstandardwasdevelopedinaccor-dancewithinternationallyrecognizedprinciplesonstandard-izationestablishedintheDecisiononPrinciplesfortheDevelopmentofInternationalStandards,GuidesandRecom-mendationsissuedbytheWorldTradeOrganizationTechnica...
