Specification:IFI,DIN,BS,JIS,ISO etc. Material:Carbon steel Price:Competitive price DIN9021/DIN1251.Size:M3-M762.Standards:DIN ,ANSI/ASME,BS,GB ... ,JIS,Non-standard3.Surface:plain,zinc plated,black oxide,hot dip galv.etc.4.Packing:in ... to customers` drawings and/or samples or designed by ourse din 9021 washer