Some items from this specific schematic: O Ring,12.5x2.2, Collar,12x10, Cover, Thermostat, Bolt,flange,6x40.
The component with the lowest price in the E-6 THERMOSTAT schematic is the Bolt,flange,6x32.
The E-6 Thermostat is made up of components including this Switch Assy.,ther which is the most expensive.