5/8-inch x 4-inch Greaseable Shackle Bolt

5/8-inch x 4-inch Greaseable Shackle Bolts are necessary to fasten the 60mm shackle springs to the rocker roller and AL-KO outback springs.

Steel on steel parts requires grease to help reduce wear and tear.

Use a nylock nut or standard nut with a spring washer.

Nylon or Polyurethane are self-lubricating spring insert bushes that do not require greaseable shackle bolts.