The Kawasaki FRONT MASTER CYLINDER ('83 H3) has twenty-three products enlisted in the schematic.
With four applications this Washer,10.5x15x1.5 is the most specified part.
Some items from this specific schematic: Bolt,oil,l=23, Nut,6mm, Lever-grip,front Brak, Washer,10.5x15x1.5.