How many do you know about the six basic methods of nut locking?

How to tighten a small nut has always been a hot topic in mechanical design. We all know more about it, such as Japanese eccentric nut, down nut and Chinese self tightening King nut. But let's not talk about these stars in the fastener industry today. Let's talk about the most basic method of fixing nuts in work.
Flat washer
The washer refers to the part between the connected part and the nut. Generally flat metal ring is used to protect the surface of the connected part from nut scratch and disperse the pressure of nut on the connected part.
Add flat washer and spring washer
Spring washer is widely used in the bearing and non bearing structures of general mechanical products. It is characterized by low cost, convenient installation and suitable for parts with frequent assembly and disassembly. But the spring washer's anti loose ability is very low!
Self locking nut
The general nut will loose by itself due to vibration and other reasons in use, such as vibration. In order to prevent this phenomenon, self-locking nut is invented. The main function of self-locking nut is anti loose and anti vibration.
For special occasions. Its working principle is generally self-locking by friction. The types of self-locking nuts can be classified into nylon ring type, necked type and metal locking device type. They are all effective torque type lock nuts.
Because of its nature, self-locking nut is difficult to screw.

Nut locking fluid
The anti loosing effect can be achieved by smearing the nut anti loosening liquid on the tightening position of the bolt and then screwing on the nut.
Double nut (left and right rotation) locking
Through a left-hand nut and a right-hand nut, tightening anti loose, this is also a good method.
Screw and nut drilling and pin fixing
In machinery, the pin is mainly used for assembly positioning, and can also be used for overload shear connection in connection and relaxation level safety devices. The types of pins are: cylindrical pin, taper pin, holed pin, cotter pin and safety pin.
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