The Bolt,hex 6x12 is the cheapest item from this partsfiche.
Parts such as the E-14: Bush,bearing, Oil Seal 33x57x7, Gear,c.fifth, Sprocket,drive are included in the Cb450k3 Japan E-14 parts fiche.
This E-14 assembly utilises four Set-ring, 25m/m(s) - the highest specified component.