The plug of {TAIL ~ filler material} fills {HEAD ~ the hole} made by the fastener body when the fastener is driven into a workpiece 
The plug of { TAIL ~ filler material } fills { HEAD ~ the hole } made by the fastener body when the fastener is driven into a workpiece
OTH OTH OTH 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