Device for fastening at least two members to each other

Device for fastening at least two members to each other, using a screw (3) and a transfer nut (4) which are adapted in order to engage in recesses (1a,2a) in the said members (1,2), characterised in that the transfer nut (4) comprises a nut plate (6) comprising a tapped hole (7), on either side of which nut plate are zones (8,9) for passage of branches (10,11) of an attachment member (12) with a cross-section of general flared U shape, whose intermediate portion (13) comprises a passage hole (14) for the screw (3), facing the tapped hole (7) in the nut plate (6), and is adapted to bear against a stop surface of the screw (3) or of the member (1) on which this screw bears, so that the nut plate causes a separation of the branches (10,11) of the attachment member (12) and their abutment against a bearing surface of the other member (2) during screwing, in order to fasten the members to each other, and in that the nut plate (6) comprises two axially offset portions (15,16), an internal one (16) in which the tapped hole (7) is made, and an external one (15) extending at least partly around the internal portion and adapted to abut against a bearing surface of the other member, opposite to that against which the branches of the attachment member abut, in order to allow positional holding of the nut by pinching of the other member between this external portion of the nut plate and the branches of the attachment member.