A sample from the products for the Handlebar ('79-'81 C2/c3/c4) include: Screw-cntsnk Hd,3x8, Switch Assy,horn Butn, Lever-assy-grip,clutc, Knob-lighting Sw R.h.
In this schematic the "Washer-spring,8mm" is used most often.
Of all the components that make up this Handlebar ('79-'81 C2/c3/c4) the Washer-plain-small,6m has the lowest price.