The Screw,tap.5x10 is the lowest priced item on this Tubing (2) (except Ar/si/sw) schematic.
The Tubing (2) (except Ar/si/sw) is made up of components including this Vlv Assy,shot Air which is the most expensive.
Some items from this specific schematic: Vlv Assy,shot Air, Tube C,pb, Clamp D 12.0 Tube, Plug,sealing.