A fastening element for constructional components, includes an anchor bolt and an expansion sleeve (18, 38), with the anchor bolt having a load application element (15) at its first end region (14) of the anchor stem (13, 33), and at a second, opposite end region (16, 36) an expansion portion (17, 37) having a conical section (19, 39) that expands in a direction of a free end of the second end region, and a cylindrical section (20, 40) that adjoins the conical section (19, 39) and has a shaped profile formed by ribs (26, 46) extending parallel to the longitudinal axis (12, 32) of the stem with the ribs (26, 46), projecting beyond an axial projection of an outer profile of the expansion sleeve (18, 38) by a distance (U. V).