A mechanism 1, wherein said bolt and {TAIL ~ said sleeve element} have respective outer and inner surfaces in frictional sliding contact, and further comprising means for lubricating said surfaces from a position at said outer end of {HEAD ~ said bolt} 
A mechanism 1 , wherein said bolt and { TAIL ~ said sleeve element } have respective outer and inner surfaces in frictional sliding contact , and further comprising means for lubricating said surfaces from a position at said outer end of { HEAD ~ said bolt }
OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD