The cap for the nut insert has a side section extending over {HEAD ~ the polygonal sides} of {TAIL ~ the nut insert} and 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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The cap for the nut insert has a side section extending over { HEAD ~ the polygonal sides } of { TAIL ~ the nut insert } and 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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