Hexagon Socket Countersunk Head Bolt

Hexagon socket countersunk head bolt   StandardDIN7991Grade8.8/10.9Dia.M12-M36Length35-400MMMaterials:Alloy steel---40Cr / 35CrMo, 42CrMo; Carbon steel:35K, 45KAvailable finishDacromet, black oxide, phosphating, electronic galvanized,ect.Head markingHYZ+8.8 or  customers' brand + 8.8PackingCarton and wooden pallet or wooden case; barrel+wooden palletCertification:FPC BC1, SGS,BV,ISO9001,  factory products 3.1 cert.Mechanical propertiesProperties Yield strength   N/mm2   Tensile strength   N/mm2    Elongation     %     Reduction of area         %8.8≥ 660≥ 830 ≥  12≥  5210.9≥ 940≥ 1040 ≥  9 ≥  48  Hardness of bolt ClassBolt8.8HRC23~34F10THRC32~39Packaging & ShippingCompany Profile1.CORE PRODUCTS:2.CERTIFICATION AND HONORS:3. FACTORY WORKSHOPS:  4.Our Related projects:  5. Brand business Partner:FAQ  /* 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