Some items from this specific schematic: Pin, Dowel(6g8), Gasket, Oil Pump Cover 1 (nas), Gasket, Crankcase Cover 1 (nas), Pin, Dowel(6g8).
On this parts fiche the Bolt,socket Head is the most specified component.
The sub assemblies and components that make up this Crankcase Cover 1 include this Cover, Crankcase 2, the most expensive part.