... requirement! We supply the bolts, screws, nuts, rods, studs, washers and many other hardware products, made of carbon steel, alloy and stainless steel, aluminum ... , AS, BS, JIS, GB, ISO or nonstandard specifications or against customers' requirements, in grades of 4.8, 6.8, 8.8, 10 ... .9, 12.9, A2-50, A2-70 and A4-70etc standard and non standard nut