Grade 10.9 Dacromet Finish Hex Head Bolt

Large hex head high strength bolt for steel structures  Product nameHigh strength hexagon head boltStandardGB/T 1228-1231Gradegrade 10.9 /8.8Dia.M12-M30Length40-300mmMaterials:Carbon steel--ML20MnTiB         Alloy steel---40Cr / 35VBAvailable finishDacromet, black oxide, phosphating, electronic galvanized,ect.Bolt Setset= 1 bolt + 1 Nut + 2 washersHead markingHYZ+ 10.9s /8.8s or customer brand + 10.9s or 8.8sPackingCarton and wooden pallet or wooden case; barrel+wooden palletCertification:FPC BC1, SGS,BV,ISO, factory testing report.Class of bolt, nut and washerComponentsBoltNutWasherClass10.9s10H35HRC~45HRC8.8S8H35HRC~45HRCMechanical properties of Bolt:Properties   Yield strength        N/mm2       (kgf/mm2)Tensile strength      N/mm2    (kgf/mm2)    Elongation            %Reduction of area             %10.9S        940            1040~1240         ≥  10        ≥  428.8S                  660 830~1030         ≥  12       ≥  45Hardness of bolt set   BoltNutWasher10.9SHRC33~39HRB98~HRC32HRC35~458.8SHRC24~31HRB95~HRC30HRC35~45WorkshopPacking                                                                    Our lab                                                                                   Core productsWe are professional in manufacturing high strength tension control bolts and heavy hex head bolts, shear studs for steel structures. All products can be manufacture as per international standard or customer drawing. for details, welcome for negotiation. Per Batch goods will be together with 3.1 certificate or the 3rd party inspection report.  /* March 10, 2023 17:59:20 */!function(){function s(e,r){var a,o={};try{e&&e.split(",").forEach(function(e,t){e&&(a=e.match(/(.*?):(.*)$/))&&1