fifty components are listed in the schematic for this Nh125 Aero 125 1984 (e) Usa Wire Harness / Ignition Coil - Chart .
The most reasonably priced component used on the Nh125 Aero 125 1984 (e) Usa Wire Harness / Ignition Coil - Chart is the Bolt,hex.,5x18.
With two applications this Screw, Cross 6x12 is the most specified part.