The Screw-washer,4x12 is the lowest priced item on this Fr. Brake Master Cylinder (cb1000r) schematic.
Parts such as the Fr. Brake Master Cylinder (cb1000r): Screw-washer,4x12, Float,rr M/c, Nut,cap,6mm, Sub Assy,fr M/c are included in the Cb1000r 2011 (b) England / Mph St Fr. Brake Master Cylinder (cb1000r) parts fiche.
The most expensive part in this assembly is the Sub Assy,fr M/c.