Therefore a large amount of {TAIL ~ fasteners} consistently supplied to the fastening machines in {HEAD ~ proper orientation} is required 
Therefore a large amount of { TAIL ~ fasteners } consistently supplied to the fastening machines in { HEAD ~ proper orientation } is required
OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH