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