On this parts fiche the Nut,hex.,10mm is the most specified component.
Parts such as the F-26 Rear Fork-propeller Shaft: Wash Rr Brk Stop, Nut,hex.,10mm, Bolt L Rr Fork, R/brg Tap N/com are included in the Gl1100i 1980 (a) Canada F-26 Rear Fork-propeller Shaft parts fiche.