Parts such as the Seat: Grommet,fr*type1*, Grip,l.pas*type1*, Grommet,rr*type1*, Grip,r.pas*type1* are included in the Gl1500a Goldwing Aspencade 1996 (t) Australia / Kph Seat parts fiche.
The most reasonably priced component used on the Gl1500a Goldwing Aspencade 1996 (t) Australia / Kph Seat is the Bolt,socket,8x50.
On this parts fiche the Bolt,socket,8x50 is the most specified component.