The Screw,cross 6x40 is the lowest priced item on this Right Crankcase Cover schematic.
The ten Cb125k5 France Right Crankcase Cover component parts are all listed in this schematic.
A sample from the products for the Right Crankcase Cover include: Screw,cross 6x16, Cover Oil Filter, O Ring, 64.5x2, Screw,pan,6x50.