Of all the components that make up this Swingarm the Nut,hex.,8mm has the lowest price.
This schematic depicts all components used in the Cb600f Hornet 2001 (1) European Direct Sales Kph 50p Swingarm partslist.
A sample from the products for the Swingarm include: Chain Set,drive R, Joint,drive Chain, Coller, Dust Seal 22x29x4.