Parts such as the Oil Pan: Strainer Comp,oil, O-ring, 62.4x3.1, Cooler Comp,oil, O-ring,62.4x3.1 are included in the Cbr900rr 1996 (t) Usa California Oil Pan parts fiche.
The component with the lowest price in the OIL PAN schematic is the Washer,plug,drain 12.
On this parts fiche the Bolt,flange,6x32 is the most specified component.