Parts such as the Frame: Bolt, Bolt,seat Back, Nut,10mm, Bolt,hex.8x20 are included in the Gl1100 Goldwing 1981 (b) Usa Frame parts fiche.
The Frame assembly is constructed from several parts from which the Body,frame*nh-1* is the most expensive.
With five applications this Washer 10mm is the most specified part.