A torque wrench is a specialized tool used to apply a specific amount of force to a fastener, such as a bolt or nut. It ensures that the fastener is tightened to the correct level, which is crucial in many applications, including automotive work and construction. Using a torque wrench helps prevent over-tightening, which can damage parts, or under-tightening, which can lead to failures. There are different types of torque wrenches, including click-type, beam-type, and digital models. Each type has its own method of indicating when the desired torque is reached. Proper use of a torque wrench is essential for maintaining the integrity of mechanical systems, such as those found in vehicles and machinery.