What is the primary purpose of a torque wrench?

The primary purpose of a torque wrench is to apply a specific torque to nuts and bolts to avoid over-torquing. This tool is designed to ensure that fasteners are tightened to the exact specifications required by the manufacturer, which is critical in preventing damage to components and ensuring the structural integrity of the assembly.

Using the correct torque is essential in applications where fastener tension is critical for safety and functionality, such as in aircraft maintenance. By avoiding over-torquing, a torque wrench helps prevent issues such as stripping threads or breaking bolts, which can lead to mechanical failures. Therefore, employing a torque wrench accurately facilitates proper assembly and enhances the reliability of mechanical systems.