The component with the lowest price in the CONTACT BREAKER - ADVANCER schematic is the Screw,cross,6x32.
The Contact Breaker - Advancer assembly is constructed from several parts from which the Advancer,spark is the most expensive.
The Screw-washer,5x12 is the most widely applied product in the CB550F2 SUPER SPORT 550 FOUR 1977 AUSTRALIA CONTACT BREAKER - ADVANCER ( three times ).