The Bolt(6x20) is the lowest priced item on this Fuel Cock schematic.
Parts such as the Fuel Cock: V Seal,fuel Cock, Gasket, Fuel Cock (nas), Gasket, Bolt(6x20) are included in the Gs425l 1979 (n) Usa (e03) Fuel Cock parts fiche.
With a quantity of two pieces, the Bolt(6x20) is the most used part in the FUEL COCK diagram.