eleven components are listed in the schematic for this Ke100-b16 1997 Usa Canada Turn Signals .
A sample from the products for the Turn Signals include: Washer,plain,4mm, Nut,flanged,10mm, Lamp-assy-signal,fr, Gasket,turn Signal La (nas).
On this parts fiche the Washer,plain,4mm is the most specified component.