... 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 ... and sharp edges.7) Packing: Carton, Box, Bag, Pallet or according to your request.8) For non-standard parts ... machining, also CNC machine, can do OEM order. cup washer