A Torque Wrench is a tool used to apply a specific torque to a fastener such as a nut, bolt, or lag screw.

These are used where the tightness of screws and bolts is crucial.

The most sophisticated method of presetting torque is with a calibrated clutch mechanism (click type).

One common form uses a ball detent and spring, with the spring preloaded by an adjustable screw thread, calibrated in torque units. The ball detent transmits force until the preset torque is reached, at which point the force exerted by the spring is overcome and the ball “clicks” out of its socket.

This design yields greater precision as well as giving tactile and audible feedback. The wrench will not start slipping once the desired torque is reached, it will only click and bend slightly at the head; the operator can continue to apply torque to the wrench without any additional action or warnings from the wrench.

We keep full range of adjustable click type manual torque wrenches in our inventory.

Technical PDF