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