{HEAD ~ The dampener} 10 has {TAIL ~ a nut} 12 mounted at one axial end for tightening the dampener 10 onto the threaded end of the shaft 
has
{ HEAD ~ The dampener } 10 has { TAIL ~ a nut } 12 mounted at one axial end for tightening the dampener 10 onto the threaded end of the shaft
HEAD HEAD HEAD HEAD HEAD HEAD OTH 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