A a threaded rod or screw 28 extends freely through {TAIL ~ bores} in {HEAD ~ the flanges} 26 and 27 
A a threaded rod or screw 28 extends freely through { TAIL ~ bores } in { HEAD ~ the flanges } 26 and 27
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH