... .Length:8-300mm 3.zinc-plated,black,HDG Round head bolt DIN6031.Features of Round head bolt DIN603: ItemRound head bolt DIN603Material Carbon steel(,Q235,C1010,C1020,C1040 ... or ShanghaiPackagementPoly bags+chipboard carton(20x20x15cm)*Advantages of us for Round head bolt DIN603:*Leading time:within 7-15days based on the normal ...