Any threaded connection is a pair of nut and bolt (or stud). All such connections require proper maintenance and proper tightening. Unfortunately, not enough attention has been paid to the correct tightening. As a result, the person either breaks the thread, or the connection remains loose. Because of this, the nut unscrews and can be lost, and the assembly with this connection can suddenly fail.
Instructions
Step 1
Before tightening the nut, it is necessary to unscrew it from the bolt or stud, clean it from dirt and corrosion, and then coat the thread with Litol grease. A graphite based lubricant is also suitable. However, some threads need to be additionally sealed with a lock. In this case, it is necessary to clean the thread and nut from dirt, then apply the lock and then tighten the nut according to the instructions of the thread lock.
Step 2
The nut should be tightened gradually. Without a sharp application of force. If parts such as a car wheel are attracted, then it is necessary to ensure an even attraction of the part over the entire surface. To do this, the bolts or nuts are tightened according to a certain pattern, for example, through one. Most often, additional instructions are not required here, and it is easy to guess for yourself how to crimp the part. Initially, tighten the nuts to light resistance and only after installing all the fasteners, tighten them completely.
Step 3
A so-called torque wrench is required for the final tightening of the nut. Torque wrenches control the tightening torque and prevent the nut from being damaged by excessive force. It is a mistake to think that the nut should be tightened as tightly as possible. This will damage the threads and the connection will cease to function. The threaded connection must be tightened exactly as indicated in the technical data sheet.
