... , self drilling screw, wood and machine screws hex bolts, nuts and other screws fastenersClass 4.8/5.8 ... Zinc Plated, H.D.P , Blackfastener and screw BOLTS ITEMNAMEDIN STANDARDPHOTO1HEXAGON HEAD BOLTSDIN931,DIN601 2HEXAGON HEAD SCREWSDIN933,DIN558 3MUSHROOM ... COUNTERSUNK HEAD SCREWSDIN7991 5HEXAGON SOCKET HEAD CAP SCREWSDIN912 6HEXAGON BOLTS WITH HEX NUTS FOR STEEL STRUCTURESDIN7990 7HEAVY HEXAGON ...