Abstract: A fastener includes a bolt, a worm gear, and a retainer. A bolt shaft has a connecting region proximate to a free end of the shaft. The worm gear has a body with an upper surface, a lower surface, and an aperture that receives the bolt. The worm gear also includes a helical portion on an outer surface of the body. The retainer connects to the connecting region to retain the bolt within the aperture. The fastener can rotate relative to a cover to move from an unlocked position to a locked position where the helical portion engages the flange and limits translational movement of the cover relative to the flange. The body is tapered between the upper and lower surfaces.