Abstract: A device for securing at least two elements together by means of a screw (3) and a transfer nut (4) adapted to be engaged in the recesses (1a, 2a) of said elements (1, 2) is characterized in that the transfer nut (4) includes a nut plate (6) having a threaded hole (7), on either side of which are located areas (8, 9) for the passage of the arms (10, 11) of a fastening unit (12) having a generally flare-shaped U cross section. The intermediate portion (13) of the latter includes a hole for the passage (14) of the screw (3) opposite the threaded hole (7) of the nut plate (6) and is adapted to be applied against a stop surface of the screw (3) or of the element (1) on which said screw rests, such that the nut plate causes the arms (10, 11) of the fastening unit (12) to be spaced apart and abuts on a contact surface of the other element (2) during screwing, in order to secure the elements together.