A bolt attachment is attached to the outer surface of the fan case and has {HEAD ~ a composite boss} with {TAIL ~ at least one threaded metallic insert} 
with
A bolt attachment is attached to the outer surface of the fan case and has { HEAD ~ a composite boss } with { TAIL ~ at least one threaded metallic insert }
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 TAIL TAIL TAIL TAIL