Abstract: The invention relates to a fastening element, in particular one intended for the fastening of installation pipes or cables on a wall or ceiling, having an optionally longitudinally divided stem provided with spreaders on the stem surface for a positive connection with the wall of a bore hole; according to the invention, the spreaders are formed as eccentrics (2, 2', 2", 2"') whose centers of rotation or axes of rotation (6) are positioned in the zone of the stem surface (1) and whose eccentric faces (3), whose distances from the centers of rotation or axes of rotation (6) increase in rotating direction on pulling the fastening element out of the bore hole, face away from the stem surface (1).