Parts such as the Turnsignal: Nut, Spring (26h), Cord Assy, Ybs83-420 Screw,panh,tapping, Bulb, Flasher (12v-32cp) (256-83311-70) are included in the Xvz12td Venture Royale 1983 (d) Usa Turnsignal parts fiche.
The Screw, Pan Head is the lowest priced item on this Turnsignal schematic.
On this parts fiche the Nut, Spring (26h) is the most specified component.