What Are Torque Wrenches and Why Do They Matter? A torque wrench is a specialized hand tool used to apply a specific amount of torque (rotational force) to fasteners such as nuts, bolts, or connectors. In the world of coax and VDV cable installations, torque wrenches are used to ensure connectors are tightened to manufacturer recommended specifications, not too tight, not too loose. ... https://jonard.com/catv-coax-vdv/torque-wrenches