The loosening of a fastener is often the result of:

The loosening of a fastener is often a consequence of undertightening. When a fastener, such as a bolt or screw, is not tightened to the specified torque, it may not provide sufficient clamping force to hold the joined parts together securely. This inadequate tension can allow the fastener to vibrate or shift during operation, which can lead to further loosening.

Proper torque application is crucial because it ensures that the fastener can withstand various forces, including vibration, load changes, and thermal expansion. If a fastener is undertightened, it lacks the necessary friction to resist these forces, thus making it more susceptible to loosening over time, particularly in dynamic environments.

Understanding the importance of correct torque values and the consequences of undertightening helps maintain the integrity and reliability of assemblies in various applications.