... bolts of product grade c for use in structural steel bolting .Material: 1. For U.S. Market ... ASTM 1010, 1015 1035 for Nuts ASTM 10B18,10B22 2. For Japan Market SWRM8,SWM10, SWRM15, SWRM ... 20 for DIN grad 8 or SAE grade 2 nut SWRCH 30, SWRH35 for DIN grade10 or ... Black ,Zinc plated and DacrotizedPacking: Carton/Pallet Steel Hexagon head bolts for structural steel bolting, for supply with hexagon nuts