The most reasonably priced component used on the An400a Burgman 2011 (l1) Usa (e03) Front Leg Shield (an400za L1 E28) is the Nut.
A sample from the products for the Front Leg Shield (an400za L1 E28) include: Nut, Bolt, Cover,fr Leg Shield(white), Shield,leg Fr.
In this schematic the "Clip(black)" is used most often.