... , IFI, JIS, AS, GB,Non-standardSizeM6~M24SurfacePlain, Zinc(Yellow Zinc, White Blue Zinc), Black, DakeluoGrade of Strength4,6,8,10,12MaterialCarbon ... Hex Thin NutDIN934 Hex NutDIN6923 Flange NutDIN982 Nylon Lock Nut White Zinc Plated Hexagon Nuts