1/2 inch Diameter Square U-Bolt

Rated 4.94 out of 5 based on 18 customer ratings
(18 customer reviews)


1/2 inch Diameter Square U-Bolt with Deep Nuts and Washers only. No tie plate is included or available.

Please note the inside corners of a Square Custom U-Bolt are slightly rounded and are not perfectly square as pictured.



1/2 inch Diameter Square U-Bolt is Custom Bent from the choices you make here. Please read the directions carefully.

1/2 inch Diameter Square U-Bolt
  • Pricing includes Extra Deep Nuts and Hardened Thick U-bolt Washers
  • Custom bent u-bolts are non-returnable.


Measure your u-bolt using the image above to to get your pricing.

  • “C” = Inside Width    (measure inside width)
  • “L” = Inside Length   (measure from the highest point inside to the bottom of the leg of u-bolt)
  • “T” = Approximate Thread Length is calculated by multiplying 2 X “L” plus “C” (which equals the overall length of rod material before bending)
    • Approximate thread lengths are predetermined and are listed below;
      • (Total rod length = Thread length on each leg)
        • 8″   to 20″ = 2″-3″
        • 22″ to 30″ = 4″
        • 32″ to 48″ = 6″
SKU: 1/2 inch dia U-Bolt Square Categories: , Tags: ,


John Dsuban Spring Service Inc.

Weight 0.52 lbs
Inside Width

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Inside Length

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ITEM: is usually in stock. If u-bolt is for suspension use, re-tighten after the first 500-1000 miles. As new or repaired springs wear in, some settling of the spring pack will occur. Even a minor amount of this settling can cause a dramatic reduction in clamping force.


  • .5 inch threads with a SAE thread pitch of 20 TPI
  • U-bolts up to 9/16 are Grade 5, while 5/8 and above are Grade 8.

We do not stock any form of stainless steel material. We do not offer any type of plating or galvanizing. All u-bolts we make are oil finish.

Physical properties:

150,000 PSI Minimum Tensile Strength; 130,000 PSI Minimum Yield Strength; 120,000 PSI Proof Load; 35% Reduction of Area; 10% Elongation. U-Bolts produced to SAE-J429 specification. This material is a cold drawn, stress relieved, micro-alloyed, 1541 modified steel. Please note that not all bending widths can be ordered on our web site.

For other information on our U-Bolts, please visit our U-Bolt information page.

Based on 18 reviews

4.9 overall

Add a review

  1. Rated 5 out of 5

    Ryan Daly

    Good u bolt at good price. Would be nice to have slightly smaller lengths though as 3 1/2″ would’ve worked better for us.

    Ryan Daly

  2. Rated 5 out of 5

    lawrence byington (verified owner)

    Was what i asked to be made fit great. Highly recommended.

    lawrence byington

  3. Rated 5 out of 5

    William Milette (verified owner)

    The dimensions where right on.
    The service was excellent !

    William Milette

  4. Rated 5 out of 5

    Landy (verified owner)

    Love it


  5. Rated 5 out of 5

    john n (verified owner)

    Exactly what i ordered. Very pleased. Will use them again.

    john n

  6. Rated 5 out of 5

    Don (verified owner)

    Just what I needed, worked great to mount my spare tire on my 5th wheel


  7. Rated 5 out of 5

    Dick Davis (verified owner)

    Exactly what I ordered.

    Dick Davis

  8. Rated 5 out of 5

    Tom t (verified owner)

    Exactly what was ordered very fast shipping

    Tom t

  9. Rated 5 out of 5

    Burke Schmidt (verified owner)

    I ordered 1/2″ diameter square u-bolts to mount anti drag wheels on a class B van. They were shipped very quickly. They are exactly what I needed to complete the job, are robust, and fit as if they were part of the wheel package. They’re perfect. Thank you

    Burke Schmidt

  10. Rated 5 out of 5

    Paul Brittenham (verified owner)

    Great selection and price, very quick shipping. Will do business with them any time I can. Thanks for the great customer service.

    Paul Brittenham

  11. Rated 5 out of 5

    Charles H Shreve (verified owner)

    After the first set which was the wrong size this order was the right ones. Thanks

    Charles H Shreve

    • Rich (verified owner)

      Thank you. Glad to be of assistance!


  12. Rated 5 out of 5

    David Chaffin (verified owner)

    Delivery was prompt and it was exactly what we ordered.

    David Chaffin

  13. Rated 4 out of 5

    Larry Picard, Picard’s Auto, Truck, & Ind. (verified owner)

    Would like a jobber price for resale when bought in quantity…..other than that, No problems… Thanks

    Larry Picard, Picard’s Auto, Truck, & Ind.

  14. Rated 5 out of 5

    Chris Zeller (verified owner)

    All companies should be as efficient as this one . Fast and accurate.

    Chris Zeller

  15. Rated 5 out of 5

    kimberly field

    exactly as ordered – shipping was fast

    kimberly field

  16. Rated 5 out of 5

    Matt Murphy (verified owner)

    Had clamps made they were EXACTLY what I ordered they were made and shipped fast VERY HAPPY

    Matt Murphy

  17. Rated 5 out of 5

    SAM MUADDI (verified owner)



  18. Rated 5 out of 5

    Walter (verified owner)

    Needed for a boat trailer modification. Order was made and received in two days, VERY fast service and fit perfectly !!!


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