In this schematic the "Bolt,flange,6x28" is used most often.
Some items from this specific schematic: Chain,oil Pump (2, Bolt,flange,6x50, Washer,plug,drain 12, Valve Assy.,relie.
The sub assemblies and components that make up this Oil Pan/oil Pump include this Pump Assy,oil, the most expensive part.