A bolt used on a floor jack. A threaded rod with a drive head (such as hex, 12 point, torx, etc.) on one end used to secure the Spring Damper to it's mounting point. A threaded rod with a drive head (such as hex, 12 point, torx, etc.) on one end used to secure the Vehicle Lifting Jack Pad to its mounting surface. bracket. FLANGE. Pad. Coil Spring. Floor.