Parts such as the Crankcase: Bolt, Hexagon Socket Head(m01), Bolt, Washer Based, Circlip(1ey), Crankcase Assy are included in the Cs50 Jog R 2003 5rw7 Holland 1b5rw-300e1 Crankcase parts fiche.
Of all the components that make up this Crankcase the Circlip(1ey) has the lowest price.
In this schematic the "Bolt,hexagon Socket" is used most often.