Fixing or fastening devices of common metal, namely, [ nuts, rivets, clamps, screw threaded inserts, ] articles of metal engineered for insertion into plastic [, metal or wood ] for the reception of screws, bolts, nuts, spacers and pins, namely, inserts; [ Screw threaded fixing or ] fastening devices of common metal in the nature of shaped articles for insertion into plastic [, metal or wood ] for the reception or insertion of screws, bolts, nuts, spacers and pins, namely, inserts to provide ...