{HEAD ~ The flat panel spars} have imbedded {TAIL ~ nut elements} that serve as “internal tooling” to provide a positive stop for locating and clamping the structural members together 
{ HEAD ~ The flat panel spars } have imbedded { TAIL ~ nut elements } that serve as “ internal tooling ” to provide a positive stop for locating and clamping the structural members together
HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH