What is the function of a self-locking nut?

A self-locking nut serves a critical function in securing two or more components together. This type of nut is designed to resist loosening when subjected to vibration or torque, which is essential in applications where stability and safety are priorities. The self-locking feature often comes from an intrinsically designed component of the nut, such as nylon inserts or a deformed thread that creates friction, preventing the nut from backing off once it is tightened.

This locking mechanism ensures that the joined components remain tightly fastened during operation, effectively reducing the risk of mechanical failure which can occur if a standard nut were to loosen. This function is especially important in various engineering applications, including automotive and aerospace, where reliability is paramount. The primary purpose aligns with maintaining the integrity of structures and machinery, illustrating the importance of using suitable fasteners for specific engineering needs.