Rear body panel bolt. A Bolt used to attach the Uniside to its mounting point. A threaded rod with a drive head (such as hex, 12 point, torx, etc.) on one end used to secure the Frame Side Member to it's mounting point. Floor Pan Bolt. Radiator Support Panel Bolt. Rear Body Panel Bolt. Body. Floor Pan. Frame Side Member. Radiator Support stud. Rail Assembly pin. Uniside.