1)Standard: DIN, IFI, JIS, ISO,GB,ANSI 2)Washers type:flat ,spring ,lock,star 3)Accept customization Specifications of Washers: ... - plating 7) Dacromet 8) Mechanical Galvanizing 9) Hot-dip Galvanizing5 Type 1) Spring washers 2) Flat washers(plain washer,IFI,ASTM ... )flat Washersunit:mm d11.71.82.22.52.72.83.23.74.35.36.47.48.410.5131517192123d244.556677891012141620242830343739s0.30.30 ...