{HEAD ~ The cap} and nut inset are welded together at {TAIL ~ the contact} between the circumferential edge of the nut insert and the free edge of the cap 
are welded together at
{ HEAD ~ The cap } and nut inset are welded together at { TAIL ~ the contact } between the circumferential edge of the nut insert and the free edge of the cap
HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH REL REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH