Patent ID: 6739631
Filing Date: 2004-05-25
Classification: F16L

Abstract:
A torque-limiting bolt-and-nut assembly comprising:a bolt including: a connector portion including a threaded shank, a secondary drive head integrally joined to an end of the connector portion, a shearable drive head integrally joined to the secondary drive head by a shear-off section designed to be sheared-off by a torque exceeding a predetermined value, and a recess formed between the shearable drive head and the secondary drive head and disposed around an outer periphery of the shear-off section; and a nut mounted on the shearable drive head and configured for transmitting torque to the shearable drive head from a tool, the nut including a connection structure extending into the recess for resisting dislodgement of the nut from the bolt.