Check out any of the forty-four Footrest (model S/t/v/w) components enlisted.
On this parts fiche the Washer(12.6x24x1.9) is the most specified component.
A sample from the products for the Footrest (model S/t/v/w) include: Washer(10.5x24x1.6), Washer (8.2x24x1.6), Washer, Ball.