Prevention of loosening-double nut fastening method

In daily life, when we install screws and nuts, the phenomenon of nut loosening is common, and we sometimes see that many bolts are used with two nuts. Can this prevent the bolts from loosening?

When preventing loosening of double nut fasteners, the friction between the threads or the supporting surfaces of the bolt and the nut can be increased, or the friction can be realized when the friction is increased. Anti-loose. The biggest advantage of anti-loosening by this method is that it will not affect its use due to space factors, and it can also be disassembled and assembled many times to achieve the purpose of mobile assembly. Therefore, this method is also the most used. (Guide: Technical Conditions of Rivets)

In addition, nuts and bolts of the same height can also be used for tightening, so that the friction force of the thread is also more, effectively avoiding the loose state. During assembly, the inner nut can be tightened by 80% of the assembly torque, and then the outer nut can be tightened with 100% of the torque, so that the nut and the bolt will be closer together, and the friction resistance will be Significant improvement. This is an assembly method with a relatively simple structure, which effectively avoids the problem of looseness. However, the weight of the nut has also increased, and more space is required for installation, which is also its disadvantage.

The use of fasteners to prevent loosening is a common problem, but we must also take corresponding measures. If we do not notice that the fasteners have been loosened during use, it is likely to cause some accidents. .

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