4WD. Adapter mount bolt. Rear. A threaded rod with a drive head (such as hex, 12 point, torx, etc.) on one end used to secure the Seat Belt Shoulder Belt to it's mounting point. Disc Brake Caliper Anchor Plate Bolt. Disc Brake Caliper Bracket Mounting Bolt. Leaf Spring Shackle Bolt. Adapter. Disc Brake Anchor Plate. Disc Brake Bracket ing. HEX FLANGE HEAD. Leaf Spring Shackle. Outer ASSEMBLY. Seat Shoulder.