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