The Washer(6a1) is the lowest priced item on this Fuel Tank schematic.
This FUEL TANK assembly utilises four Bolt, Flange (4h7)(s) - the highest specified component.
Parts such as the Fuel Tank: Washer(6a1), Spring Compression (1a0), Fuel Tank Comp., Packing,cap are included in the Cv80k Riva 1983 Fuel Tank parts fiche.