How to tighten a small screw has always been an eternal and romantic topic for screw person.
The meticulous screw person have tried a variety of methods in the process of technological development.
Let's talk about the basic anti-loose fixing nut method!
1.Add flat washer
Washer is the part between the connected part and the nut. It is generally a flat metal ring, which is used to protect the surface of the connected part from being scratched by the nut, and to disperse the pressure of the nut on the connected part.
2.Add spring wahser
Spring washers are widely used in load-bearing and non-load-bearing structures of general mechanical products.It is characterized by low cost, convenient installation, and is suitable for parts with frequent assembly and disassembly. But the anti-loosening ability of the spring washer is very low!
3.Use self-lock nut
The general nut will loosen itself due to vibration and other reasons during use. In order to prevent this, the self-lock nut was invented. Its working principle is generally self locking by friction.
It is most suitable for the fastening of moving parts. It was first used in the American aerospace industry and later extended to the American automobile manufacturing industry.
With the maturity of manufacturing technology and the reduction of cost, it is widely used in 3C, bicycles, skating and ski equipment, furniture, sports equipment, medical equipment and other industries
It completely replaces the traditional anti-backwash washer, which fully shows the reliability of the tightening and anti-loosening effect of the anti-loosening nut.
4.Apply nut anti-loosening fluid
Apply the nut anti-loosening liquid to the tightened part of the bolt, and then screw on the nut to achieve the effect of anti-loosening.
5.Double nuts (left and right) to prevent loosening
It’s also a good method to se a left-handed nut and a right-handed nut to tighten and prevent loosening.self drilling screw factory