The lowest price component in this Crankcase parts-list fiche is the Bolt-flanged-small,6x40.
In this schematic the "Pin,dowel,6.3x8x14" is used most often.
A sample from the products for the Crankcase include: Bearing-ball,#6002, Stud,8x28.5, Bolt-flanged-small,6x40, Pin,8.2x10x14.