1/2" nut (3/4 outside) inside a 1x1x.120 square tube, welded in place, then dropped inside the 1.5x1.5x.188 and welded

1/2" nut (3/4 outside) inside a 1x1x.120 square tube, welded in place, then dropped inside the 1.5x1.5x.188 and welded into place.