Jack hold down. REGULAR CAB. A bolt used on a floor jack. A threaded rod which is used along with a nut to provide clamping force to help secure the Jack 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 Wheel Stop to it's mounting point. LIFTING J. Stud. Floor Bolt. Suspension Control Arm Stop Bolt. Wheel stop. Included with: Jack assembly, Jack carrier, Parts included with jack assembly.