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