... )Size:M3-M76 3)Finish:Tin,Nickel,Chrome stainless steel lock washer1) Standard: DIN, BS, IFI, JIS, ISO,GB,ANSI,ASME ... : remove all burs and sharp edges.7) Packing: Carton, Box, Bag, Pallet or according to your request.8) For non-standard ... .9) Working Process Include: cold punching, and machining, also CNC machine, can do OEM order.