The cap for the nut insert has a side section extending over the polygonal sides of the nut insert and an end section adapted to cover the second end of the nut insert, and {HEAD ~ the side sections} terminates in {TAIL ~ a free end} which free end is welded to the nut insert 
The cap for the nut insert has a side section extending over the polygonal sides of the nut insert and an end section adapted to cover the second end of the nut insert , and { HEAD ~ the side sections } terminates in { TAIL ~ a free end } which free end is welded to the nut insert
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