Head air bag bolt. Left.AIR BAGS. Left.Coupe. Right.AIR BAGS. Right.Coupe. 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.