Designation:D1761−12StandardTestMethodsforMechanicalFastenersinWood1ThisstandardisissuedunderthefixeddesignationD1761;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.ThisstandardhasbeenapprovedforusebyagenciesoftheU.S.DepartmentofDefense.INTRODUCTIONTheuseofwoodandwood-basematerialsinmanystructuralandotherapplicationsofteninvolvestheuseofmechanicalfasteners,suchasnails,screws,bolts,lagscrews,andconnectors.Dataonthestrengthandperformanceofsuchfastenersarefrequentlyneededfordesignandforcomparativepurposes.Testsofmechanicalfasteners(exceptnailwithdrawal)havebeengenerallyregardedasspecialtestsandhavenotbeenincludedinthestandardmethodsalreadyestablishedforevaluatingthepropertiesofwood.Manysuchspecialtestshavebeenextensivelyusedoveraconsiderableperiodbuthavenotpreviouslybeenestablishedasstandards.Presentedherewitharemethodsofconductingtestsfornail,staple,andscrew(exceptmachinescrews)withdrawalresistance;lateralloadtransmissionbynail,staple,screw,bolt,andtimberconnector;andloadtransmissionbynailplates.Theuseofstandardmethodsforthesetestsisrecommendedasameansofobtainingcomparabledataandofeliminatingvariablesintestresultsbecauseofvariationsintestingmethods.Thetestsappearinthefollowingorder:SectionsNail,Staple,orScrewWithdrawalTest1to12LateralNail,Staple,orScrewResistanceTest13to20TestingBoltedandTimberConnectorJoints21to30Keywords31NAIL,STAPLE,ORSCREWWITHDRAWALTEST1.Scope1.1Thesetestmethodsprovideabasicprocedureforevaluatingtheresistanceofwoodandwood-basematerialstodirectwithdrawalofnails,staples,andscrews.Spikesareincludedasnailsinthisstandard.1.2Thetestsalsoprovideabasisfordeterminingcompa-rableperformanceofdifferenttypesandsizesofnails,staples,andscrewsindirectwithdrawalfromwoodandwood-basematerials.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyproblems,ifa...
