Some items from this specific schematic: Cock Assy.,fuel, Bolt-washer,8x16, Clip B10,tube, Packing,fuel Cap.
The Screw-washer, 4x6 is the lowest priced item on this Fuel Tank schematic.
The sub assemblies and components that make up this Fuel Tank include this Tank,*r-107c-u*, the most expensive part.