1/2" Trailer U-bolt kit for 3" Tube 5200 - 7000 lb Axles

  • Single Specs: 10" x 2.25" Electric Brake Assembly 1 - Driver Side Assembly 4 Bolt Brake Flange Rated at 3,500 lbs per pair Pair Specs: 10" x 2.25" Electric Br3.5k Trailer Axle
  • 1/2" Trailer U-bolt kit for 3" Tube 5200 - 7000 lb Axles - The Trailer Parts Outlet
  • 1/2" Trailer U-bolt kit for 3" Tube 5200 - 7000 lb Axles - The Trailer Parts Outlet
  • 1/2" Trailer U-bolt kit for 3" Tube 5200 - 7000 lb Axles - The Trailer Parts Outlet
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1/2" Trailer U-bolt kit for 3" Tube 5200 - 7000 lb Axles

1/2" Trailer U-bolt kit for 3" Tube 5200 - 7000 lb Axles

SKU : 5207UBKT1/2-150

Online price only

$2,343.99

Online price only

SAVE 0% (833) 910-3416
4.1
Rated 4.1 out of 5 stars
29 Reviews
Shipping: Calculated at Checkout | Product Wt. 790.0 lb
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1/2" Trailer U-bolt kit for 3" Tube 5200 - 7000 lb Axles — Pack of 150

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): 1/2"
  • U-bolt length (L): 7"
  • U-bolt width (A): 3"
  • Fits axle tube: 3"
  • Axle capacity: 5,200–7,000 lbs

What’s Included:

  • (600) 7" long U-bolts
  • (300) U-bolt plates for 1-3/4" or 2" springs
  • (1200) 1/2"-20 hex nuts

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.

4.1
Rated 4.1 out of 5 stars
Based on 29 reviews
Customers Talked About
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29 reviews
  • JL
    John L.
    Verified Buyer
    2 weeks ago
    Rated 2 out of 5 stars
    The plates bent

    The plates that go under the spring bent at less than 80 foot pounds of torque and were thinner than the ones I took off. Suprising the old u bolts weren’t 1/2” and their plates were thicker.

    Was this helpful?
  • DW
    David W. B.
    Verified Buyer
    5 months ago
    Rated 5 out of 5 stars
    6,000 pound trailer axle an u-bolt kit.

    The axle and u-bolt kit arrived on time and was exactly what I ordered.

    Was this helpful?
  • KL
    kent l.
    Verified Buyer
    6 months ago
    Rated 5 out of 5 stars
    As advertised

    Fit perfectly.

    Was this helpful?
  • KS
    Kent S.
    Verified Buyer
    6 months ago
    Rated 5 out of 5 stars
    U bolts

    Well, they went around a new axles as ordered.

    Was this helpful?
  • DM
    Daniel M.
    Verified Buyer
    7 months ago
    Rated 5 out of 5 stars
    Axle upgrade

    Worked great. Fast shipping

    Was this helpful?
    The Trailer Parts Outlet
    7 months ago

    Great to hear the 1/2" Trailer U-bolt kit worked perfectly for your axle upgrade and that the shipping was fast, Daniel! We're thrilled you're happy with your purchase. Thank you for your business and your 5 star review!

    Lindsey Millican
    (936) 935-2186
    The Trailer Parts Outlet

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