In this schematic the "Nut,cap,lock,8mm" is used most often.
Check out any of the forty Footrests/stands components enlisted.
Parts such as the Footrests/stands: Bolt,flanged,8x40, Washer,20x30x2.3, Bolt-side Stand, Pin Cotter,295x15 are included in the Kz750b1 1976 Usa Canada / Mph Kph Footrests/stands parts fiche.