... -60MaterialA-2 Stainless Steel alloy with 17- 19% Chromium and 8-13% Nickel,4.8,6.8,8.8,12 ... else kinds of bolt we can supply? Name of this kindsCountersunk bolt, square bolt, J-bolts, T-bolts, foundation bolt, U-bolt, double end stud ... , round head bolts, hexagon bolt, carriage bolt.Carbon steelMild/ ...