A sample from the products for the Front Hub include: Nut,castle,18mm, Bolt,10x29.5, Cap,wheel, Pin,cotter,4.0x25.
The most reasonably priced component used on the Kvf360-a9f Prairie360 2009 Usa / 4x4 Front Hub is the Pin,cotter,4.0x25.
In this schematic the "Bolt,10x29.5" is used most often.