Left.JAPAN BUILT. Right.JAPAN BUILT. A threaded rod with a drive head (such as hex, 12 point, torx, etc.) on one end used to secure the Window Regulator Guide Rail to its mounting surface. Door Window Glass Surround Channel Bolt. Window Regulator Bolt. Windshield Washer. Door Window Glass Surround. Frame. Run. Sash screw. Window Regulator.