Product Description:

Trailer Shackle Bolts, Greaseable, 9/16″”x 3″”, (SP04-021)

(4 pack) Trailer Shackle Bolts, Greaseable, 9/16″” x 3″” suspension bolts attach leaf spring to the hangers or equalizers of a trailer. 

  • Wet Shackle Bolts
  • 9/16″” Diameter
  • 3″” long
  • Grease Zerk included for easy lubrication
  • Used with 1-3/4″” wide springs
  • 9/16″” locknuts included
  • Qty. 4 per package


Manufacturer Part Number ‎  SP04-021

Trailer Shackle Bolts: Your Key to a Smoother Journey

Trailer shackle bolts, specifically the greaseable 9/16″ x 3″ kind, are the secret weapon for any trailer owner or operator who prioritizes the smooth operation of their trailer’s suspension system. Don’t let small but essential parts like these go unnoticed. And if you have any questions or need assistance with these indispensable components, don’t hesitate to give us a call at 717-262-6383.

A Close Look

These 9/16″ x 3″ bolts are integral to your trailer’s suspension system, attaching the leaf spring to the hangers or equalizers of a trailer. What sets these apart from standard shackle bolts is their greaseable feature, which allows for easy and effective lubrication, prolonging the life of your suspension components. This particular model, the SP04-021, has been meticulously designed to fit perfectly with 1-3/4″ wide springs.

You’ll find this package particularly appealing as it includes:

– Wet Shackle Bolts that promise longevity and durability
– A manageable 9/16″ Diameter
– A convenient 3″ long size
– A Grease Zerk for easy lubrication
– 9/16″ locknuts for secure fitting
– A quantity of 4 per package for your convenience

Maximizing Performance

By investing in this Product, you’re taking a proactive step to ensure the peak performance of your trailer’s suspension system. With these bolts in place, not only will your trailer suspension respond better, but the overall life of your springs, hangers, and equalizers can be significantly extended.

The greaseable feature makes maintaining these bolts a breeze. By regularly applying grease via the included Grease Zerk, you’re reducing friction and wear, which in turn reduces the need for frequent replacements. This leads to a smoother, quieter ride, and saves you time, energy, and money in the long run.

Why Choose the 9/16″ x 3″ Trailer Shackle Bolts?

Ultimately, the choice of trailer shackle bolts boils down to the value they bring. And with the greaseable 9/16″ x 3″ variant, that value is unmistakable. They’re designed with practicality and longevity in mind, ensuring an optimal performance for your trailer’s suspension system.

Reliability is another strong suit of these Amazing Item. Being a product of meticulous manufacturing, they stand out for their consistent quality, helping you avoid unexpected breakdowns and ensuring your journey is as smooth as possible.

Remember, these are but tiny components with a big impact. Ensure your trailer runs smoothly by investing in high-quality, greaseable 9/16″ x 3″ And as always, if you have any questions, feel free to reach out to us at 717-262-6383. We’re here to make your trailer experiences the best they can be!

Trailer Shackle Bolts

Subscribe for Deals & Used Inventory Notifications!

Stay in the know! Get the latest updates on our new & used inventory, promotions, parts, and services by subscribing to our newsletter.


Add a review
You must be logged in to post a review Log In
Based on 7 reviews
1-5 of 7 reviews
  1. AC

    Pretty good bang for your buck.

  2. CH

    Heavy duty bolts

  3. BL

    Great product

  4. PC

    I had to whip out the LOCTITE for a few of the nuts because the “lock” nuts just weren’t holding up. They were too loose and couldn’t stay put without some LOCTITE. I’m on the hunt for new lock nuts that’ll actually do their job and hold tight.

  5. DA

    Redline never disappoints.


View Our Live Inventory Online!