Steel structure large hexagonal bolt

Product Details

Details: Ordinary bolts are generally 4.4 grade, 4.8 grade, 5.6 grade and 8.8 grade. High-strength bolts are generally 8.8 and 10.9 grades, of which 10.9 is the majority.

Level 8.8 is the same level as 8.8S. The force performance and calculation methods of ordinary bolts and bolts are different. The force on the bolt is first of all by applying a pre-tension force P,

Then frictional resistance is generated on the contact surface between the connected parts to bear the external load, while ordinary bolts directly bear the external load.　　More specifically: high-strength bolted connection has the advantages of simple construction, good force performance, removable and replaceable, fatigue resistance, and does not loosen under dynamic load, and is a promising connection method.

High-strength bolts are made by tightening the nut with a special wrench, so that the bolt produces a huge and controlled pre-tension, and through the nut and gasket, the same amount of pre-pressure is generated on the connected parts. Under the action of pre-pressure, a large friction will be generated along the surface of the connected part, obviously, as long as the axial force is less than this friction, the component will not slip, and the connection will not be damaged, which is the principle of degree bolt connection.

Materials: Procurement of materials according to customer needs