nickel plating outer profile washers 1.Size: M3 ~ M64 2.ISO9001 & 14001 3. High ... Quality 4.Can to be Customized. nickel plating outer profile washers1) Standard: DIN, BS, IFI, JIS, ISO,GB,ANSI,ASME ... , Dacromet,Mechanical Galvanizing, Hot-dip Galvanizing.etc.5) Shape: round , square , curved , taper, cup, bowl or according to your request.6 ...