A bolt becomes fatigued from working back and forth when it is too loose. The problem is MOST-Likely to occur when the assembly is not properly:

Question

Quizplus · Accepted Answer

The problem of a bolt becoming fatigued from working back and forth is most likely to occur when the assembly is not properly torqued. Proper torque ensures that the bolt is tightened to the correct specification, preventing it from becoming loose and moving back and forth, which can lead to fatigue.

A Bolt Becomes Fatigued from Working Back and Forth When