The Nut Nylon Cap is the cheapest item from this partsfiche.
Parts such as the Headlight (1): Screw,adjuster, Socket Assy.,posi, Rubber,joint, Ring,retaining are included in the Xl600v Transalp 1987 (h) France / Headlight (1) parts fiche.
This HEADLIGHT (1) assembly utilises three Screw,tapping 4x8(s) - the highest specified component.