In this schematic the "Bolt,flange,6x32" is used most often.
The Washer,plain, 6mm is the lowest priced item on this Left Crankcase Cover / Spark Advancer schematic.
This schematic depicts all components used in the Cb750sc Nighthawk 750 1983 (d) Usa Left Crankcase Cover / Spark Advancer partslist.