Size:M10-M42 Grade:A2,A4 Finish:Black Oxide,Zinc,Dacromet Tab washers for round nut DIN70952Material:Carbon Steel,stainless steel1) Various kinds of washers are available2) Can be made with different tensile strength, such as A2,A43) Can be supplied with different finish, such as bright, zinc plated, black4) Can be made with different standards, sch as ISO, DIN, ANSI, BS and special standard ...