hex head bolt STANDARD:DIN933,931,DIN601,DIN558,IFI C-6,IFI C-10,ASTM BOLT,BSW BOLT hex head bolt2)standard:DIN933,931,DIN601,DIN558,DIN603,IFI C-6,IFI C-10,ASTM BOLT,BSW BOLT3)size:m6-m50,length:15mm-300mm4)class: 4.8,8.8,10.85)surface:plain, black,H.D.G,ZINC,DACROMET6)material: stainless steel ,alloy steel,carbon steel7)package:bulk packing,small boxes,pocket. hex head bolt