The Nut,hex.14mm is the lowest priced item on this F-28 Rear Cushion schematic.
This schematic depicts all components used in the Gl1200 Goldwing 1984 (e) F-28 Rear Cushion partslist.
The F-28 Rear Cushion is made up of components including this Cushion Assy Rr which is the most expensive.