In this schematic the "Bolt,flange,sh,6x40" is used most often.
Parts such as the Right Crankcase Cover: Gskt,r,c/case Cov (mca), Dowel,pin,8x14, Cover,r.crankcase, Bolt,flange,sh,6x40 are included in the Cb250 Nighthawk 1991 (m) Canada / Kph Right Crankcase Cover parts fiche.
The sub assemblies and components that make up this Right Crankcase Cover include this Cover,r.crankcase, the most expensive part.