Parts such as the Taillight(s): Gasket,tail Lamp Lens (nas), Lamp-assy-tail, Collar,l=4.7, Collar are included in the Ksv700-c6f Kfx700 2006 Usa Taillight(s) parts fiche.
Check out any of the fourteen Taillight(s) components enlisted.
In this schematic the "Screw" is used most often.