... Washer 1)Standard:DIN,ANSI,BS,JIS,GB 2)Size:M3-M76 3)Material:Steel,Stainless steel 4)Finish:Zinc,Black ... , BS, IFI, JIS, ISO,GB,ANSI,ASME,Non-Standard2) Size: M3–M763) Material: Carbon Steel, Alloy Steel, Stainless Steel, Brass, Aluminum ... , and machining, also CNC machine, can do OEM order. Flat Washers