The Washer,screw 4x12 is the lowest priced item on this Front Brake Master / Cylinder schematic.
The Front Brake Master / Cylinder is made up of components including this Cylinder Assy,fr. which is the most expensive.
This part-list fiche shows all the components that make up the Cb900f 900 Super Sport 1981 (b) Usa Front Brake Master / Cylinder .