The Screw,cross 4x6 is the lowest priced item on this Fuel Tank schematic.
The Fuel Tank assembly is constructed from several parts from which the Tank, Fuel *pb111cu* is the most expensive.
Parts such as the Fuel Tank: Body Comp.,cock, Mark,caution, Nut,rear Ornament, Tank, Fuel *pb111cu* are included in the Cb900c 900 Custom 1980 (a) Usa Fuel Tank parts fiche.