Parts such as the Oil Pan: Bolt, Pan,oil, Washer,lock, Bolt 6x25 are included in the Gsx1100f 1988 (j) Usa (e03) Oil Pan parts fiche.
The thirty-two Gsx1100f 1988 (j) Usa (e03) Oil Pan component parts are all listed in this schematic.
With ten applications this Bolt is the most specified part.