The anti loosening bolt is also known as a non releasing screw or a non loosening screw. Everyone has a different customary name, but it actually means the same thing. It is to add a small diameter screw and rely on the small diameter screw to hang the screw on the connecting piece (or through a ferrule or snap spring) to prevent the screw from falling off. The bolt structure itself does not have the function of simulating the falling off of the screw. The simulating falling off function of the screw is achieved by the connection method with the connected part, that is, by means of a corresponding structure, the small diameter screw of the screw is clamped on the installation hole of the connected part to achieve the simulating falling off.
The front of the anti loosening screw is a thread, and the middle is a thin screw. The ingenious use of the thin screw to achieve simulated detachment is mainly divided into the following categories:
- Slotted pan head anti loosening screw
- Hexagon head anti loosening screw
- Anti loosening screw of spray head
Slotted countersunk head anti loosening screw
- Slotted half countersunk head anti loosening screw