... black oxide 4. Material: stainless steel, carbon steel, copper, brass, aluminum. we will provide you the follows products, 1. DIN 660 ... set screws, hex socket head cap screws, wood screws.Rivet: solid rivet, blind rivet, pop rivet.Nails: roofing nails, twist nails ... sell fasteners, hardware and automotive spare parts to America/Europe with our excellent reputation, over 20 years export experience and ...