A nut is threaded onto the outer end of the bolt and contacts the sleeve, so that rotation of the nut moves the sleeve axially of {HEAD ~ the bolt} to adjust {TAIL ~ the pressure} of the spring on the locking bar 
to adjust
A nut is threaded onto the outer end of the bolt and contacts the sleeve , so that rotation of the nut moves the sleeve axially of { HEAD ~ the bolt } to adjust { TAIL ~ the pressure } of the spring on the locking bar
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 REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH