Air spring screw. Left.S7. Right.S7. W/AIR SUSPENSION. A threaded rod with a drive head (such as hex, 12 point, torx, etc) on one end used to secure the Active Suspension Air Spring to it's mounting point. Bolt used to secure the door Hinge. Part cannot be reused/reinstalled. Air Suspension Spring. Door. Hexagon flange. Mount. Shock Assembly. Strut.