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