Left. Lock assy screw. Right. A Screw that is used to secure the Door Reinforcement Bar to it's mounting point. A threaded rod with a drive head (such as hex, 12 point, torx, etc.) on one end used to secure the Door Reinforcement Bar to it's mounting point. Bolt attaching Door latch to vehicle. Door Latch Screw. Reinforcement Bar. Crossmember. Latch. Packing. Support brace mount.