The nut has a first end with the internal threads and {HEAD ~ a second end} with {TAIL ~ an inwardly directed shoulder} 
with
The nut has a first end with the internal threads and { HEAD ~ a second end } with { TAIL ~ an inwardly directed shoulder }
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