Check out any of the twelve Headlamp (gsf1200sk1/sk2/sk3/sk4/sk5/szk5) components enlisted.
Parts such as the Headlamp (gsf1200sk1/sk2/sk3/sk4/sk5/szk5): Bulb(12v51w,hb4,p22d), Headlamp Assy, Washer(6.5x20x1.6), Nut are included in the Gsf1200z Bandit 2005 (k5) Usa (e03) Headlamp (gsf1200sk1/sk2/sk3/sk4/sk5/szk5) parts fiche.
In this schematic the "Washer(6.5x20x1.6)" is used most often.