The Washer(6.5x18x1) is the lowest priced item on this Frame Cover (model K2/k3/k4/k5) schematic.
Some items from this specific schematic: Cover,frame,l(black), Washer(6.5x18x1), Cushion, Cover,frame,l(black).
With a quantity of six pieces, the Screw is the most used part in the FRAME COVER (MODEL K2/K3/K4/K5) diagram.