Designation:A740−98(Reapproved2014)StandardSpecificationforHardwareCloth(WovenorWeldedGalvanizedSteelWireFabric)1ThisstandardisissuedunderthefixeddesignationA740;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.ThisstandardhasbeenapprovedforusebyagenciesoftheU.S.DepartmentofDefense.1.Scope1.1Thisspecificationcoverswovenorweldedgalvanizedsteelwirefabriccommerciallyknownashardwarecloth.Itiscustomarilyusedforwindowandscreendoorguards,treeguards,industrialmachineguards,sandscreens,andgrainbins.Itservesasaprotectivescreenagainstrodentsandisusedformanyotherhome,farm,andindustrialpurposes.1.2Thevaluesstatedininch-poundunitsaretoberegardedasthestandard.2.ReferencedDocuments2.1ASTMStandards:2A90/A90MTestMethodforWeight[Mass]ofCoatingonIronandSteelArticleswithZincorZinc-AlloyCoatingsB6SpecificationforZincE29PracticeforUsingSignificantDigitsinTestDatatoDetermineConformancewithSpecifications2.2MilitaryStandards:3MIL-STD-129MarkingforShipmentandStorageMIL-STD-147PalletizedandContainerizedUnitLoads40Inch×48InchPallets,Skids,Runners,orPalletTypeBaseMIL-STD-1188CommercialPackagingofSuppliesandEquipment3.Terminology3.1DefinitionsofTermsSpecifictoThisStandard:3.1.1hardwarecloth—asusedinthisspecification,desig-natesamaterialcomposedofcold-drawnsteelwireswhichhavebeenfabricatedintofabric(orso-called“mesh”),formedbytheprocessofweavingorelectricalwelding,andsubse-quentlygalvanized(zinccoated)bythehot-dipprocess.Thefinishedmaterialconsistsessentiallyofaseriesoflongitudinal(warp)andtransverse(filler)wiresarrangedsubstantiallyatrightanglestoeachother.3.1.2meshsize—asitpertainstocloth,isthedimensionalcenter-to-centerdistancebetweenwarpwiresandfillerwiresinthatorder.Measurementsincludethewidthofoneopeningplusthethicknessofoneparallelzinc-coatedwire.Examplesare1by2in.,1⁄2by1in.,e...
