... 3)Standard:DIN,IFI,BS,ISO 4)Finish:zinc-plated flat round washer Standard: DIN125, DIN126, DIN9021, DIN433,DIN440 ... Steel / BrassDiameter: M2.5-M48 1/4"-2"Flat Round Washers 1)Size:M1.7~M50 2)Material:SUS304 ... 3)Standard:DIN,IFI,BS,ISO 4)Finish:zinc-plated flat washer 1. Standards1. ISO, DIN, AS/NZS, ... certification 5. Features5. Good anti-corrosion ability,kinds of coatings 6. Grade6. 4.8, 6.8, 8.8, ...