Novel flange bolt

The utility model discloses a novel flange bolt, including screw rod, bolt head, screw thread section and nut, the one end of screw thread section is opened there is the locating hole, be equipped with the screw thread on the inner wall of locating hole, the tip of locating hole is equipped with the draw -in groove, the positioning area of nut is corresponding with the position of locating hole. The utility model discloses simple structure, through the locating hole structure redesign to the screw thread section, the screw hole combines together with the draw -in groove structure that the key was described, to fixed nut position, adopts the mode of screw screw in locating hole to strengthen its fastness, and to the nut position of the single position of non -, through passing the draw -in groove that the key was described with iron wire and bolt, the reinforcing is firm, and such design when satisfying specific technology demand, has still enlarged field own, is worth the popularization. 本实用新型公开了种新型的法兰螺栓，包括螺杆