The component with the lowest price in the F-8 schematic is the Nut,hex.,8mm.
A sample from the products for the F-8 include: Fork Set,*nh168m*, Bush.fr.cush.un, Cap, Cushion, Dustseal, Cushion.
This F-8 assembly utilises four Dust Seal,fr.arm(s) - the highest specified component.