Parts such as the F-30: Screw Cross 3x25, Winker,assy,l., Lens Winker, Socket,r.winker are included in the Cb450k3 Japan F-30 parts fiche.
In this schematic the "Screw Cross 3x25" is used most often.
The most reasonably priced component used on the Cb450k3 Japan F-30 is the Screw,cross 5x8.