On this parts fiche the Bolt, Hexagon With Washer(353) is the most specified component.
Of all the components that make up this Clutch Yz80a/yz80b the Nut(650) has the lowest price.
Parts such as the Clutch Yz80a/yz80b: Spring Compression132163330000, Rod, Push (2), O-ring (353), Plate, Thrust are included in the Yz80 Competition 1974 Usa Clutch Yz80a/yz80b parts fiche.