The component with the lowest price in the SEAT (MODEL K7) schematic is the Washer(6.5x20x1.6).
Some items from this specific schematic: Cable,seat Lock, Spacer(6.5x10x10), Washer,seat Bracket, Washer,pillion.
This SEAT (MODEL K7) assembly utilises four Washer(6.5x20x1.6)(s) - the highest specified component.