9/16" Trailer U-bolt kit for 3.5" Tube 8000 lb Axles

  • 9/16" Trailer U-bolt kit for 3.5" Tube 8000 lb Axles - The Trailer Parts Outlet
  • 9/16" Trailer U-bolt kit for 3.5" Tube 8000 lb Axles - The Trailer Parts Outlet
  • 9/16" Trailer U-bolt kit for 3.5" Tube 8000 lb Axles - The Trailer Parts Outlet
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9/16" Trailer U-bolt kit for 3.5" Tube 8000 lb Axles

9/16" Trailer U-bolt kit for 3.5" Tube 8000 lb Axles

SKU : 08UBKT

Online price only

$35.99

Online price only

SAVE 0% (833) 910-3416
4.5
Rated 4.5 out of 5 stars
4 Reviews
Shipping: Calculated at Checkout | Product Wt. 8.0 lb
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9/16" Trailer U-bolt kit for 3.5" Tube 8000 lb Axles — Single

Mount your leaf springs to the axle with this complete U-bolt kit. Includes the u-bolts, tie plates, and nuts needed for a secure, properly torqued installation.

U-Bolt Specifications:

  • Diameter (D): 9/16"
  • U-bolt length (L): 8"
  • U-bolt width (A): 3 1/2"
  • Axle capacity: 8000 lbs

What’s Included:

  • (4) 8" Long U-bolts
  • (2) U-Bolt plates for 2" springs
  • (8) 9/16"-18 Hex nuts This trailer axle U-bolt kit is designed for 8K axles, and it comes with everything you need to install your new leaf springs. If you're building a new trailer, then you'll have the U-bolts, plates, and hex nuts that you need to get the job done. You won't have to search for individual parts, or wonder if the parts you do have will work on your axle. At The Trailer Parts Outlet, we're here to help you find the right products at the right prices, so that you can get your trailer back on the road. Order your new U-bolt online today!

Key Features & Benefits:

  • Complete kit — all hardware needed for installation
  • Secures leaf springs to the axle tube
  • Heavy-duty construction for long service life
  • Finish may vary between dark grey and silver/chrome depending on supply

Ideal For:

  • Mounting leaf springs to the axle
  • Suspension rebuilds and axle swaps
  • New trailer builds
  • Shop & fleet stock

Note on Raw Materials: When ordering raw steel suspension components, minor surface rust and protective oils are normal and may require cleaning prior to installation. This does not affect performance or structural integrity.

Why Buy from The Trailer Parts Outlet?

  • Quality trailer parts at affordable prices
  • Fast shipping — order today, ships tomorrow
  • Bulk & wholesale pricing available
  • Knowledgeable support when you need it

Have questions? Call or message us at (936) 289-3191 — our team is here to help you find the right suspension parts. Order today and keep your trailer safe, stable, and road-ready.

4.5
Rated 4.5 out of 5 stars
Based on 4 reviews
Total 5 star reviews: 3
Total 4 star reviews: 0
Total 3 star reviews: 1
Total 2 star reviews: 0
Total 1 star reviews: 0
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4 reviews
  • RT
    richard t.
    Verified Buyer
    21 seconds ago
    Rated 5 out of 5 stars
    u bolts

    fast delivery, fair price

    Was this helpful?
  • JJ
    John J.
    Verified Buyer
    3 months ago
    Rated 3 out of 5 stars
    Plate not wide enough for springs

    Good product

    Was this helpful?
    The Trailer Parts Outlet
    3 months ago

    I apologize for the inconvenience. Kindly give us a call we will be happy to assist you to get you what you need.

  • ML
    Marc L.
    Verified Buyer
    1 year ago
    Rated 5 out of 5 stars
    good product

    went together nicely

    Was this helpful?
  • RS
    Roger S.
    Verified Buyer
    1 year ago
    Rated 5 out of 5 stars
    Beavertail flatdeck

    Great product, super fast shipping. Thanks

    Was this helpful?