... , DIN508, DIN787, DIN7965 2) Material: carbon steel, alloyed steel, T-head boltFeatures:1) Material: carbon steel, alloyed steel2) Diameter: according to ... (300T-1000T), two aluminum alloy die-casting <280T-1350T>, three accurate casting, three auto trailers hitch ball production flowing. High stating point ... . Well keep improvine our company and developing our business. T-head Bolt