What is the main purpose of a torque wrench?

The main purpose of a torque wrench is to measure and limit applied torque. This tool is specifically designed to ensure that fasteners, such as bolts and nuts, are tightened to a precise torque specification. Different applications require different torque settings to ensure that the fastener is secure without being over-tightened, which could lead to damage or failure.

A torque wrench typically has a measuring mechanism that indicates when the preset torque level has been reached. This functionality is crucial in automotive and mechanical work, where proper torque settings can influence the performance and integrity of the assembly. By using a torque wrench, a technician can maintain the accuracy and reliability of their work, ensuring that each fastener is tightened to the manufacturer's specifications.