... requirement! and have some stock we can make the screw as your requirement!We supply the bolts, screws, nuts, ... rods, studs, washers and many other hardware products, made of ... , phosphate, mechanical galvanization, hot dip galvanization, Dacromet and other kinds. The products are produced in conformity with ... .9, 12.9, A2-50, A2-70 and A4-70etc SCREWS