... Oxide, Zinc etc Material:Carbon Steel, SS Tab washers with long tab and wing DIN463Size:M3-M48Grade:A2, A4Finish:Black Oxide, Zinc ... , zinc plated, black4) Can be made with different standards, sch as ISO, DIN, ANSI, BS and special standard according to the drawingsPacking:bulk packing ... or as your requirements MOQ:1. If you want to test the quality and we can accept small quantity but no 1 or 2 ...