This CRANKCASE assembly utilises four Screw,flat,6x12(s) - the highest specified component.
Some items from this specific schematic: Oil Seal,10x17x4, B/brg Rad N/com, B/brg Rad N/com, Dowel,pin,10x16.
The Screw,pan,5x25 is the cheapest item from this partsfiche.