cup washer 1)Standard:DIN,ANSI,BS,JIS,GB ... 3)Material:Steel,Stainless steel 4)Finish:Plain,Zinc,Black Cup Washer1) Standard: DIN, BS, IFI, JIS, ISO, ... Galvanizing.etc.5) Shape: round , square , curved , taper, cup, bowl or according to your request.6) Surface Condition: remove ... are avaliable for us.9) Working Process Include: cold punching, and machining, also CNC machine, can do OEM order. cup washer