Torque Wrenches

About this category

Torque wrenches are precision fastening tools used to apply, indicate or control torque during tightening according to the tool design. Models differ in torque control or indication mechanism: some are preset (click) designs, while others indicate the applied torque value per design. Click-type models produce an audible and mechanical signal at the set torque, beam-type wrenches indicate the value on a scale attached to the arm, dial-type models show the value on an indicator dial, and digital/electronic models display the value on an electronic screen. Models differ in documented torque range (the minimum and maximum torque the wrench can apply), documented accuracy and resolution; a wide range is not a synonym for higher accuracy. Drive sizes (square drives) vary across models according to the target fastener size; drive size is not a synonym for maximum torque capacity. Some models may offer memory, audible alerts and interchangeable heads depending on design. A torque wrench is not equivalent to an ordinary wrench and is not interchangeable with a precision torque screwdriver used for small torque values. Calibration requirements vary by model and quality system, and the inclusion of a calibration certificate should not be assumed across models. Industrial buyers select torque wrench models based on torque range, drive size, documented accuracy, directionality, resolution and documentation requirements.