Check out any of the eleven Cdi Unit - Ignition Coil components enlisted.
The most reasonably priced component used on the Tm100 1974 (l) Usa (e03) Cdi Unit - Ignition Coil is the Washer 6mm.
Some items from this specific schematic: Lock Washer, Clamp, Coil Assembly,ignition, Cdi Unit Assy.