Fit my needs perfectly to connect these steel posts
Happy Customers
2,800 + Five Star Reviews
Fast Shipping
Quick Delivery Times
Made Strong
Grade 5 Steel or Stronger



Delivery Estimates Calculated At Checkout
Square bend 1/2 inch U-bolt rod, made in the USA with precision and durability. These square U-bolts are available in various lengths and inside diameters, feature a fine thread, are non-coated and are made of grade 5 steel. Specifically designed for secure fastening in automotive, farm, trailer, construction and marine applications. Enhance your project's performance with the reliability of our professionally crafted U-bolt rods.
1/2 Inch Square U-Bolt Details:
- U-Bolts made in the USA.
- U-bolts are sold individually.
- Plates sold separately.
- U-bolts are made to order and may be up to 1" longer per leg than ordered length.
- Torque Specification: 90 FT LBS.
- Grade: SAE grade 5 steel
- U-Bolt Material: Raw steel (non-coated)
- Thread Direction: Right-hand thread
- Thread Type: Standard NF fine thread
- Size And Threads Per Inch: 1/2-20
Overall rating: 4.8 / 5 from 479 reviews.
Fit my needs perfectly to connect these steel posts
Wayne C. 5/5 Verified
I was highly dissatisfied with the quality and dimension of the u-bolts that came with some front axle parts for my '32 Ford. They appeared to be a metric size and were easy to bend. A friend who works in farm and heavy equipment repair told me about your site and bingo... problem solved. Thanks for making a great product!
Carl M. 5/5 Verified
Worked great
Glenna S. 5/5 Verified
I haven't used them as yet, but they are as promised. I will take a picture when installed. Because of physical restraints, I could not use them as U-bolts, I cut them in half and made "L" bolts to attach the underframe of my aluminum flat bed to the chassis of my truck. Thank you.
Paul W. 5/5 Verified
Perched the 2¼ to fit around a 2 inch tubing. Vary happy with the product.
Robert H. 5/5 Verified
As stated on my last order, the u-bolts were for the rear axle on an 1870’s chuck wagon. They are perfect for it.
Keith C. 5/5 Verified
Restoring a 1800’s chuck wagon. Needed custom u bolts. These fit perfectly.
Keith C. 5/5 Verified
Perfect for attaching I-beam to 2X1" steel rod and drawing it up to 3/4 plywood
Jim S. 5/5 Verified
I used these bolts to mount a toolbox to my tillage tool. I just got it mounted today so haven’t been able to really test the durability. The quality seems really good and all my parts were just want I ordered
Landon D. 5/5 Verified
Happy to find these u-bolts, perfect for my needs!
Russell J. 5/5 Verified
I'm very satisfied with my u-bolts. After searching the web I was getting disappointed with no luck. Than I prayed for help and whaaapa, the U-Bolt store appeared on my screen and the rest is history. Thanks be to my Lord Jesus for providing your store to me. 👍👍
Richard O. 5/5 Verified
I had to replace a broken latch on a horse trailer divider. A 1/2 inch U-bolt worked perfect. I had to cut one side shorter, drill one small hole in the long leg, and saved a bunch of money by not ordering from an equine supplier. U Bolt Store had exactly what I needed and shipped it quickly. Highly recommend!
Bret C. 5/5 Verified
They worked for my shop project
David S. 5/5 Verified
The quality is there, and the size precision dead on. In fact to dead on, I measured wrong my mistake, but quickly reordered the proper size that I need and awaiting new ones. I was expecting it to be hard to find the u bolts I needed but site came up quickly on my search, and the site was easy to navigate. I will definitely use them in the future, and won't hesitate to tell others.
Paul Y. 5/5 Verified
Shipped perfect fit exactly as ordered and leaves no room to doubt a quality product from a local outfit. Definitely my go to for springs and bolts going forward!
Jacob L. 5/5 Verified
Came packaged well, correct size I ordered, I ordered the nuts and washers both were heavy duty, will recommend your product.
Lloyd S. 5/5 Verified
This is exactly what I needed to lock up my bike. The only bad thing is that it is rusting instantly. I hope it’s not a structural issue.
Eric N. 4/5 Verified
Measurements were exactly as I ordered. Working well.
Gary B. 5/5 Verified
U-bolts and hardware were a perfect companion for the 2-inch lift allowing larger tires on my 4x8 trailer.
Dale H. 5/5 Verified
Good quality!
Mark S. 5/5 Verified
I’m going to use it later this week. I’ll be able to make a better review after that.
Frank M. 5/5 Verified
I used them on my 51 Chevy deluxe skyline to lower it worked out nice thanks guys 👍🏻😎
Billy B. 5/5 Verified
Bolt was perfect and I appreciated that, when I needed to change the size after I had already ordered, they answered my email right away and just said "No problem"! Easy as that.
Martin F. 5/5 Verified
Exactly as ordered and fast shipping. These worked great to secure my flag pole mount to my RV bumper.
Shane C. 5/5 Verified
Had to replace the leaf springs on my boat trailer. These 7 inch u bolts worked perfectly.
Richard P. 5/5 Verified
Replaced rusted bolts with these u bolts. The incremental sizes enabled me to find some to replace the originals on my tractor.
Ronald B. 5/5 Verified
Needed these to install my upgraded axle on my truck. Fit perfect and worked great.
Todd D. 5/5 Verified
Thank you, arrived promptly and well packaged. I needed these specific U-Bolts to put a 1" block on my truck & couldn't find them anywhere locally. Worked perfect for what i needed. You guys came through. Thanks again !!
Martin C. 5/5 Verified
Worked perfectly
August H. 5/5 Verified
Used these ubolts for a burningman art car frame. Excellent quality, fast shipping, great documentation. 5/5 stars. The only thing I would say for improvement is if the company provided CAD models for the ubolts. I had to make cad models from the drawings.
Kevin J. 5/5 Verified
I’m quite impressed with product I received. I wasn’t able to locate the 4 inch U bolts that I needed for my boat trailer at various retailers in Phoenix, Arizona, at least, not where I was recommended to look so going online and and purchasing them from U-bolt store worked out perfect for me.
Vernon M. 5/5 Verified
High quality
Edward S. 5/5 Verified
Used to mount new fertilizer hoppers on old planter. Perfectly sized with good clean threads. Very happy, thank you!
Ray E. 5/5 Verified
They were exactly the right bend , fit like a glove!
Tim W. 5/5 Verified
So glad for the product. Just what I needed. In fact, I was excited enough about it, I wrote a short article on my website so other DIY project folks can find you too. https://mechanicalelements.com/a-new-favorite-source-for-u-bolts/ Thank you!
Eldon G. 5/5
Very good quality, I am satisfied with the product.
Pedro D. 5/5 Verified
The order came faster than promised and are perfect. I used 11" long 3" wide ubolts to attach some C channel together on the back of my truck to create a rack for a car top tent. The result is perfect for the purpose, solid as anything, and saved hundreds of dollars if I were to buy them from the tent manufacturer. If I ever need ubolts again I know where to go.
Eric O. 5/5 Verified
The U-Bolts I purchased are at the very top of the Hurricane Braces I made for my garage doors👍🏻 They worked perfectly!!! Thank you
Walter R. 5/5 Verified
U-Bolts were the perfect size and quality material. Fast shipping as well. Thanks!
Michael M. 5/5 Verified
Shipping was quick and product was exactly what I ordered. Price was fair also. I'm a happy customer.
Ron W. 5/5 Verified