{HEAD ~ The outer flange} 320 is fixed and bolted to {TAIL ~ the rotor hub} 110 
is fixed to
{ HEAD ~ The outer flange } 320 is fixed and bolted to { TAIL ~ the rotor hub } 110
HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH REL REL OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH