Disclosed is a fastener (1) for application to a threaded stud (31), having a sleeve-like retaining element (2) with a cavity (5) extending in the direction of its longitudinal axis to accommodate the threaded stud (31) and at least one deformable clamping region that tends to assume a clamping position projecting into the cavity (5) and gripping the threaded stud (31), and having a flange (3) arranged at the forward end of the retaining element (2) in the direction of installation that can be pressed onto an item (32) to be fastened, wherein the flange (3) is arranged a distance away from the retaining element (2) and attached to the retaining element (1) by means of spring shackles (4).