The Bolt,flang,6x16 is the cheapest item from this partsfiche.
Parts such as the Transmission: Collar,spline 28x, Collar 28mm, Gear,m-2 M-4, B/brg Rad N/com are included in the Vt1100c2 Shadow 1996 (t) Australia / Rbm Transmission parts fiche.
On this parts fiche the Washer,thrust,28 is the most specified component.