The three Dr-z110 2005 (k5) Usa (e03) Drz110 Dr Z110 Rear Suspension component parts are all listed in this schematic.
Some items from this specific schematic: Bolt,flanged,10x50, Nut,lock,flanged,10mm, Bolt,flanged,10x57.
Of all the components used in this assembly the Nut,lock,flanged,10mm is the most expensive.