Cover bolt. Left. Right. A threaded rod with a drive head (such as hex, 12 point, torx, etc.) on one end used to secure the Seat Belt Pretensioner to its mounting surface. Seat Belt Lap and Shoulder Belt Bolt. /SCREW. AND. AND Amplifier. AND Amplifier; screw. Bezel. Center. Cover. Lap and Shoulder. Outer Assembly screw. Pretensioner.