... , Surface,Zinc plated ,Hot dip galvanized,Black,Plain Size,M3-M48 Name of trade,Hex black Nuts Standard,DIN ANSI BSSize,M3 ... -M48Material,Carbon steelSurface,Zinc plated ,Hot dip galvanized,Black,PlainProduct Origin, Haiyan County Zhejiang Province China. Payment Terms,T ... ,260X260X140. 20FT FCL:17-24MT. Certification(s), ISO9001:2000. Hex black nuts