The sub assemblies and components that make up this F-20 include this Fender Set, Rr. (wl), the most expensive part.
A sample from the products for the F-20 include: Bolt,flange, Bolt Flang 6x12, Nut,clip 6mm, Fender Set, Rr. (wl).
In this schematic the "Nut,special,6x7" is used most often.