washer flat washer,plain washer,spring washer SIZE:M2---M24 STANDARD: DIN, ANSI, ISO, JIS ART OF SURFACE:Zn,Ni,Black,etc washerOur company mainly produce washer, rubber ring, pipe clamp,rubber hose , rubber ring and rubber seal and so on.flat washer,plain washer,spring washerSIZE:M2---M24STANDARD: DIN, ANSI, ISO, JISART OF SURFACE:Zn,Ni,Black,etc. washer