240pcs of 12point head screws Description: 1/2" - 13UNCx1 1/2" Material: ASTM A453-660B Attachment code: ITN32223 240pcs of 12point head nut Description: 1/2" - 13UNC TYPE 2 Material: ASTM A453-660B Attachment code: ITN34255 32pcs of HexHead screw Description: 1/2" - 13UNCx1 1/2" Material:X12CR13 Attachment code: ITN32222 Please contact directly the company for detailed tecnical data