... SS304.316.316L etc 2) types: hexagonal bolts and nuts, stud, screws etc 3) grade: 4.6 ... .8.10.12 Bolts and nuts1) material: SS304.316.316L etc 2) types ... made of carbon steel, alloy, stainless steel, aluminium, brass and other special materials. Specification:1) Made of 304 ... 316,316L etc materials2) Available varieties: hexagonal bolts and screws, hexagonal nuts, flat washers, spring lock ...