Flat washer: 1) Materials: steel and stainless steel 2) Finish: plain, zinc 3) Specifications: DIN125A, DIN9021, BS4320A/B/ ... ,ANSI,ASME,Non-Standard2) Size: M3–M763) Material: Carbon Steel, Alloy Steel, Stainless Steel, Brass, Aluminum, etc.4) Finish: Zinc Clear, Zinc Yellow ... ) Packing: Carton, Box, Bag, Pallet or according to your request Washers