The Nut-hex-small is the cheapest item from this partsfiche.
A sample from the products for the Swingarm include: Seal-oil, Bearing-ball,6004ul11, Shaft-swing Arm, Arm-comp-swing,p.silv.
The sixteen Kle650a9f Versys 2009 Usa Swingarm component parts are all listed in this schematic.