{TAIL ~ a metallic bolt} fixed to {HEAD ~ the two flanges} and extending generally perpendicularly therebetween 
{ TAIL ~ a metallic bolt } fixed to { HEAD ~ the two flanges } and extending generally perpendicularly therebetween
TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH