Reinf beam bolt. A threaded rod with a drive head (such as hex, 12 point, torx, etc.) on one end used to secure the Instrument Panel Crossmember to a mounting point. A threaded rod with a drive head (such as hex, 12 point, torx, etc.) on one end used to secure the Instrument Panel Reinforcement to a mounting point. beam. INSTRUMENT PAN. Instrument Crossmember. Reinforce bar.