OEM Zinc Aluminum Alloy Die Casting GM Die Casting and Hardware Co., Ltd. Base Info Model NO.:GM-1121Standard:DIN, ANSI, GB, JIS, BSWMaterial:AluminiumConnection:WeldingSurface Treatment:Without TreatmentHead Type:RoundSpecification:20*20*20Origin:ChinaHS Code:0101101010 Description Pre:Dacromet DIN 6921 Hexagon Flange Bolt Made in China Next:DIN6921 Hex Flange 9.8 Dacromet Coating Bolt Made in China