... as your requirement! We supply the bolts, screws, nuts, rods, studs, washers and many other hardware products, made of carbon steel, ... phosphate, mechanical galvanization, hot dip galvanization, Dacromet and other kinds. The products are produced in conformity with DIN, ANSI, AS, BS, JIS ... , GB, ISO or nonstandard specifications or against customers' requirements, in grades of 4.8, 6.8, 8.8, 10.9 ...