... 2)Size:M3-M76 3)Material:Steel,Stainless steel The Flat Washer 1) Standard: DIN, BS, IFI, JIS, ISO,GB,ANSI ... , Chrome- plating, Dacromet,Mechanical Galvanizing, Hot-dip Galvanizing.etc.5) Shape: round , square , curved , taper, cup, bowl or according to your ... washers, 80% of our products are exported to oversea. DIN435 flat washer