What is the difference between large hexagon head high strength bolt and torsion shear high strength bolt

1。 They have different shapes. The big hexagon head is hexagonal. The head of the torsion shear type is semicircular, and there is a plum blossom head at the end of the bolt.
2。 The installation method is different. The large hexagon is installed with a torque wrench. In the process of installation, the torsion shear type is controlled by the plum blossom head at the tail, and the bolt is screwed reversely by the reaction force of torque until the straight tooth end of the bolt is broken
The matching is different. Each set of large hexagon is equipped with one bolt, one nut and two flat pads. The twist shear type is a bolt, a nut and a flat pad.
The company's main business: high strength bolt, high strength nut, steel structure bolt, steel structure nut, grid sealing plate, grid bolt, etc.