Parts such as the Steering Shaft: Wash Trust 15.2mm, Shaft, Steering, Nut,u,14mm, Dust Seal,25x47x7 are included in the Trx350d Fourtrax 1987 (h) Italy Sul Steering Shaft parts fiche.
The Honda STEERING SHAFT has fifteen products enlisted in the schematic.
In this schematic the "Bolt,special Flan" is used most often.