The component with the lowest price in the CLUTCH schematic is the Bolt,hex.,6x25.
On this parts fiche the Disk,friction (nas) is the most specified component.
Parts such as the Clutch: Spring, Clutch, Washer,lock, Seat,disk Spring, Clip,extl,94mm are included in the Cb400nc 1983 (d) Australia Clutch parts fiche.