Torque-limiting fastening device

A threaded torque-limiting fastening device that includes a pin a socket connection comprising:

• a fastening member having first and second longitudinal ends, a first sets of threads provided about an exterior of the fastening member and extending from the first longitudinal end of the fastening member, a first pin and socket connection component provided proximate the second longitudinal end of the fastening member, and
• a connector having a second pin and socket connection component and a threaded portion;
• one of the first and second pin and socket connection component comprising a pin and the other of the first and second pin and socket connection components comprising a socket, the pin adapted to be received within the socket so that the pin portion is longitudinally slidable, but non-rotational relative to the socket so as to allow torque to be transmitted from the connector to the fastening member;
• a gripping member that includes a surface adapted to be gripped and turned by a tool for applying torque to the gripping member;
• the gripping member including threads to allow the gripping member to be connected to the threaded portion of the connector via a torque-transmitting threaded connection that transmits torque below a predetermined limit from the gripping member through the connector to the fastening member, and wherein the gripping member is arranged to be threaded relative to the connector when the torque exceeds the predetermined torque and wherein the threading of the gripping member relative to the connector when the torque exceeds the predetermined torque causes the connector to slide longitudinally away from the fastening member.

A threaded torque-limiting fastening device comprising:

• a fastening member having a first set of threads provided at least adjacent to a first end thereof, said fastening member having a screw head at a second end thereof opposite to the first end, said member head having a socket formed therein;
• and
• a torque member comprising a pin portion adapted to be received within the socket formed at the second end of the fastening member so that the pin portion is longitudinally slidable, but non-rotational relative to the socket so as to allow torque to be transmitted from the pin portion to the fastening member, the torque member further comprising a gripping member;
• wherein the gripping member is connected to the pin portion via a torque-transmitting threaded connection that transmits torque below a predetermined limit from the gripping member through the pin portion to the fastening member, and wherein the gripping member is arranged to be threaded relative to the pin portion when the torque exceeds the predetermined torque and wherein the threading of the gripping member relative to the pin portion when the torque exceeds the predetermined torque causes the pin portion to slide longitudinally out of the socket.