Vibration and loosening resistance optimized clinching nuts have the following features:

Special thread construction 1:
Non-traditional thread design: The shape of the upper and lower sides of the thread profile is specially designed, for example, the upper and lower sides of the thread profile may not be a common straight line, but an oblique line or a special curve with a certain angle. In this way, when subjected to vibration, it can increase the friction between the threads and the bite force, and prevent the nut from loosening. For example, the upper and lower sides of the thread type of some anti-vibration pressure rivet nuts are guide diagonal lines respectively, and the two inclined lines are connected by the transition line that is connected by a plurality of line segments, and the transition line is concave in the direction far away from the top of the tooth, and this structure can make the nut still maintain good fastening in the vibration environment.
Increase the profile angle or change the pitch: A larger profile angle or a specific pitch design can increase the contact area of the thread, which in turn improves the resistance to vibration and loosening of the nut. Compared with ordinary pressure rivet nuts, anti-vibration pressure rivet nuts may have a larger profile angle, so that the contact between the threads is tighter, and relative displacement is not easy to occur when vibrating.
2. Unique Ontology Structure:
Increase the limiting structure: additional limiting devices may be arranged on the nut body, such as inlays, bosses and other structures on one side or periphery of the nut. After the nut is installed, these structures are able to form interference with the plate or part to be connected, limiting the axial movement and circumferential rotation of the nut, thereby enhancing its anti-loosening performance. For example, an anti-loosening special-shaped pressure riveting nut is provided with an inlay, an inner part and an outer inlay on one side of the screw body, and the pressure riveting nut is limited, and the anti-loosening performance is improved3.