Uses Of High Strength Nuts

As a professional fastener supplier, Xinchi Fastener Company has rich experience in the fastener industry, especially in the category of furniture nuts. In simple terms, nuts can be divided into ordinary nuts and high-strength nuts. Maybe some people are not very familiar with high-strength nuts and want to know the difference between ordinary nuts and high-strength nuts. Xinchi Fastener Company is happy to explain this to you, and hopes to help you.

The mechanical properties and calculation methods of ordinary bolts and high-strength nuts are different. High-strength nuts are first stressed by applying a pretension P inside them and then generating friction resistance on the contact surface between the connected pieces to bear the external load, while ordinary bolts bear the external load directly.

High-strength nut connection has many advantages, such as simple construction, good mechanical performance, removable, fatigue resistance, and not being loose under the action of dynamic load, so it is a promising connection method.

The high-strength nut is tightened with a special wrench so that the bolt produces a huge and controlled pre-tension. And through the nut and the plate, it also produces the same amount of pre-pressure on the connected parts. Under the action of pre-pressure, there will be a large friction force along the surface of the connected parts. Obviously, as long as the axial force is less than this friction force, the components will not slip and the connection will not be damaged. This is the principle of high-strength nut connection.

The high-strength nut connection is prevented from sliding by the friction between the contact surfaces of the connectors. In order to make the contact surfaces have enough friction, it is necessary to improve the clamping force and friction coefficient of the contact surfaces of the components. The clamping force between parts is achieved by applying pretension to the bolt, so the bolt must be made of high-strength steel, which is why it is called high strength bolted connection.

The friction coefficient has a great influence on the bearing capacity in high-strength bolted connections. The results show that the friction coefficient is mainly affected by the form of the contact surface and the material of the component. In order to increase the friction coefficient of the contact surface, the construction often adopts sandblasting, wire brush cleaning and other methods to deal with the contact surface of the components within the connection range.

High-strength nuts actually come in two types: friction type and pressure type. The principle of friction type high strength bolts subjected to shear force is that the shear caused by the design load does not exceed the friction force. The pressure type high strength bolt is based on the bar body is not cut or the plate is not crushed for the design criteria. In addition, high-strength bolts are not reusable.

Anji Xinchi Fastening Piece Co., Ltd is a one-stop solution fasteners company and is the designated fastener supplier to“STAPLE”. As a trusted fastener supplier, Xinchi can offer a wide range of high-quality fasteners, including tee nuts, screws, bolts, rivets, washers, etc. If you want to know more about fasteners or want to wholesale fasteners, please feel free to contact us. Our experienced and expert service team will reply to you as soon as possible.