Head air bag bolt. Left. Right. A solid metal or plastic block with a threaded hole in the center which is used to tighten or adjust the Seat Belt Guide. A threaded rod with a drive head (such as hex, 12 point, torx, etc.) on one end used to secure the Seat Belt Guide to it's mounting point. A threaded rod with a drive head on one end used to secure the Curtain Air Bag Inflator Module to its mounting point. Body B-Pillar Trim Panel Bolt. Body B-Pillar Trim Panel Screw. Body C-Pillar Trim Panel Screw. Body D-Pillar Trim Panel Screw. Part cannot be reused/reinstalled. Seat Belt Lap and Shoulder Belt Bolt. Included with: Pillar Trim.