Some items from this specific schematic: Bolt,hs,6mm, Collar,14.7mm, O-ring 14.5mm, Collar,9.2mm.
The most reasonably priced component used on the Cf50c Japanese Home Market (cf50-320) Cylinder - Cylinder Head is the Pin,dowel,8x12.
With a quantity of two pieces, the Bolt,stud,6x32 is the most used part in the CYLINDER - CYLINDER HEAD diagram.