Nut cutter

This invention relates to a nut cutter tool for removing and cutting away threaded nuts that are frozen or seized onto a mating member such as a bolt, threaded stud, or threaded shaft. A nut cutter tool includes a cutter head rotatably driven by a driver. The cutter head may be detachable from the driver for sharpening or replacement of the cutter head. A chip guard may be attached to the tool for catching falling chips and debris. Also a locking mechanism may be provided for releasably locking the tool onto an externally threaded member on which the nut to be cut is threaded to hold the tool in axial alignment with the nut during the nut cutting operation.