FIG 4 illustrates {HEAD ~ a fastener} 76 having {TAIL ~ a head portion} 78 with a forwardly directed threaded shank 80 and a rearwardly directed shank 82 
FIG 4 illustrates { HEAD ~ a fastener } 76 having { TAIL ~ a head portion } 78 with a forwardly directed threaded shank 80 and a rearwardly directed shank 82
OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH