On this parts fiche the Washer,oil Bolt is the most specified component.
Of all the components used in this assembly the M/c Sub Assy,rr is the most expensive.
A sample from the products for the Rear Brake Mastercylinder (cb600fa/fa3) include: Circlip,m/c, Clamp,oil Hose, Clamper,master Cy, Bottom Comp..