In this schematic the "Lock Washer" is used most often.
Parts such as the Front Fender-headlamp Housing: Housing,headlamp, Molding, Lock Washer, Bolt,8x16 are included in the Gn125 1982 (z) (e01 E02 E04 E18 E30) Front Fender-headlamp Housing parts fiche.
The most reasonably priced component used on the Gn125 1982 (z) (e01 E02 E04 E18 E30) Front Fender-headlamp Housing is the Lock Washer.