A sample from the products for the Front Wheel (lt-z400zl2) include: Seal,oil(21x35x8), Tire,fr, Spacer(20.5x26x10), Valve Assy,wheel Rim(tr412).
This part-list fiche shows all the components that make up the Lt-z400z Quad Sport 2012 (l2) Usa (e03) Quadsport Quad-sport Front Wheel (lt-z400zl2) .
In this schematic the "Nut" is used most often.