Anti cross thread device.

摘要

The wrench tool comprises a socket adapted at one end for rotatable engagement with a driver head and adapted at its free end for receiving the nut such that the nut face is perpendicular to the rotation axis of the socket, and a mechanism adapted to the driver head which limits misalignment between the rotation axis of the nut and the longitudinal axis of the stud to a tolerable level. Contact between the mechanism and the stud establishes and fixes the longitudinal axis of the stud relative to the wrench, providing proper starting of the nut on the stud. Contact between the mechanism and the wrench during run down causes the mechanism to be moved clear of the nut.