Headlamp assy bolt. Left.M6x40. PartQualifier: M6x40. Right.M6x40. A threaded rod with a drive Head (such as hex, 12 point, torx, etc) on one end used to secure the Headlamp Mounting Panel to it's Mounting point. Headlight Mounting Bolt. Headlight Mounting Screw. Assembly Mount. Panel. Screw. Spacer.