... phosphate5.packing:bulk , box packing , bulk in carton.Our main products are bolts, screws, nuts, machine screws, plain washers, spring lock washers ... , rivets, anchors and many other hardware products made of carbon steel, alloy & stainless steel, aluminum, brass or other special materials. For finishing, we ... information about our company, you are welcomed to visit us. HEX BOLTS ZINC PLATED