The Nut (89w) is the cheapest item from this partsfiche.
The Taillight assembly is constructed from several parts from which the Bracket, License is the most expensive.
Parts such as the Taillight: Cord Assy, Nut (89w), Collar(1ae), Bulb, Tail Lamp (12v 32/3cp) are included in the Fzr600r 1996 (t) Usa Taillight parts fiche.