Of all the components that make up this Crankcase the Screw,pan,5x25 has the lowest price.
Some items from this specific schematic: Crank Case.assy.l, B/brg Rad N/com, B/brg Rad N/com, B/brg Rad N/com.
This CRANKCASE assembly utilises four Screw,flat,6x12(s) - the highest specified component.