Stainless steel outer square plug, oil plug, blind pipe plug, all supporting specifications

Riveting nut, also known as self tightening nut, is a type of nut applied to thin plates or sheet metal parts. It is circular in shape and has embossing teeth and guide grooves at one end. It can also be used for riveting on printed circuit boards to facilitate the installation of other parts on printed circuit boards. The conventional process method is to pre design prefabricated hole positions on the printed circuit board, and squeeze the rivet nut teeth into the board through pressure, causing plastic deformation around the hole and firmly fixing the rivet nut on the circuit board. In important locations, the use environment of riveting nuts is relatively harsh. In display products, due to space limitations, there are many riveting screws used. The quality of riveting screws has a direct impact on the reliability of the system. The riveting process is the key technology for correctly using riveting nuts.

"High strength bolt connection has the advantages of simple construction, good stress performance, detachable replacement, fatigue resistance, and non loosening under dynamic loads, making it a promising connection method.
High strength bolts use a special wrench to tighten the nut, causing the bolt to generate a huge and controlled pre tension. Through the nut and pad, the connected parts are also subjected to the same amount of pre pressure. Under the action of preload, a large frictional force will be generated along the surface of the connected component. Obviously, as long as the axial force is less than this frictional force, the component will not slip and the connection will not be damaged. This is the principle of high-strength bolt connection.
High strength bolt connections rely on the friction between the contact surfaces of the connecting components to prevent their mutual sliding. In order to have sufficient friction on the contact surfaces, it is necessary to increase the clamping force of the components and increase the friction coefficient of the contact surfaces of the components. The clamping force between components is achieved by applying pre tension to the bolts, so the bolts must be made of high-strength steel, which is why they are called high-strength bolt connections.
In high-strength bolted connections, the size of the friction coefficient has a significant impact on the bearing capacity. The experiment shows 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, construction often uses methods such as sandblasting and wire brushing to treat the contact surface of components within the connection range"

Generally, a countersunk head is used in areas where the surface is required to be smooth without protrusions after connection, as the countersunk head can be screwed into the part. Round heads can also be screwed into the parts. The tightening force of the square head can be larger, but the size is large. In addition, in order to meet the needs of locking after installation, there are holes in the head and the rod, which can prevent the bolts from loosening when subjected to vibration. Some bolts with no threads need to be made thin, called thin waisted bolts. This type of bolt is beneficial for connection under variable forces. There are specialized high-strength bolts on the steel structure, with larger heads and varying sizes. Additionally, there are special uses for T-groove bolts, which are most commonly used on machine tools and fixtures. They have a special shape and need to be cut off on both sides of the head. Anchor bolts, used for connecting and fixing machines to the ground, come in many shapes. U-bolts, as mentioned earlier. Wait a minute. There are also specialized studs for welding, with threads on one end and no threads on the other end, which can be welded to the parts while directly tightening the nuts on the other side.

The process factors that affect the quality of high-strength fasteners include steel design, spheroidizing annealing, shelling and dephosphorization, pulling, cold heading, thread processing, heat treatment, and sometimes a combination of various factors.