In {TAIL ~ another embodiment}, {HEAD ~ the fastener} has a telescoping structure in which an internally threaded torque element is slidably received within a central passage of the head portion 
In { TAIL ~ another embodiment } , { HEAD ~ the fastener } has a telescoping structure in which an internally threaded torque element is slidably received within a central passage of the head portion
REL TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH