The Screw,cross 5x8 is the lowest priced item on this Swingarm (cr125rp/rr/rs/rt) schematic.
On this parts fiche the Washer,swingarm S is the most specified component.
Some items from this specific schematic: Collar,swing Arm(, Washer,swingarm S, Nut,rr.fork Pivot, Joint Rj,drive Ch.