On this parts fiche the Washer(6.5x15x1.6) is the most specified component.
A sample from the products for the Fuel Cock include: Bolt(6x20), Washer(6.5x15x1.6), Cock Assy,fuel, Screw.
This schematic depicts all components used in the Gsf1200z Bandit 2002 (k2) Usa (e03) Fuel Cock partslist.
