The Screw is the lowest priced item on this Right Handle Switch (gsx500ese/esf) schematic.
Parts such as the Right Handle Switch (gsx500ese/esf): Lever,brake, Switch Assy, Handle, Screw, Nut are included in the Gsx500es 1984 (e) General Export (e01) Right Handle Switch (gsx500ese/esf) parts fiche.