{HEAD ~ A lock nut} is screwed onto the outer end of the bolt and is locked to {TAIL ~ the nut}, so that rotation of the lock nut rotates the bolt and adjusts the circumferential position of the locking bar 
{ HEAD ~ A lock nut } is screwed onto the outer end of the bolt and is locked to { TAIL ~ the nut } , so that rotation of the lock nut rotates the bolt and adjusts the circumferential position of the locking bar
HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH