On this parts fiche the Nut, U (4kj) is the most specified component.
A sample from the products for the Stand. Footrest include: Rear Footrest Assy 1, Hose (l40), Bolt, Flange (3jpe), Nut, U (4kj).
The lowest price component in this Stand. Footrest parts-list fiche is the Washer, Spring.