The Bolt (682) is the lowest priced item on this Oil Pump - Belt schematic.
Parts such as the Oil Pump - Belt: Gear, Driven, Oil Pump Assy, Washer 1, Washer, Lock are included in the Ft9.9g 1988 Oil Pump - Belt parts fiche.
This OIL PUMP - BELT assembly utilises three Bolt, Hexagon(663)(s) - the highest specified component.