Square Bend U-Bolts

One of our standout offerings is the Square Bend U-Bolt Grade 5 Zinc. This product is a top choice for agricultural OEM’s securing critical components to square tubing. Made out of premium 1541 grade steel that meets grade 5 specs and with a zinc coating that resists rust and corrosion, it’s ideal for environments exposed to moisture or chemicals.  We can make these in 3/8” diameter up to 1” diameter for heavy duty applications.
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Custom Square Bend U Bolts in Zinc, Zinc Yellow, and 304 Stainless

Square U bolts hold row units to toolbars, brackets to square steel tubing, and equipment to structural members, spreading clamping load evenly across the flat side of the section instead of loading a corner. Every size in this manufactured products tree is bent and threaded on our own equipment in Nebraska, which is what keeps lead times short, minimums flexible, and bulk pricing available on repeat OEM releases.

Diameters From 3/8 to 1 Inch, Plus M16 Metric

Diameters run 3/8, 1/2, 5/8, 3/4, 7/8, and 1 inch, with M16 covering popular sizes in metric builds. Materials include low carbon steel, 1541 (grade 5 equivalent) for higher clamp loads, and 304 stainless, and finishes cover plain, zinc, and zinc yellow. This enables the corrosion spec to match the environment without moving the part to another supplier. Stainless is the specification to pull when wash down, fertilizer, or standing moisture is part of the duty cycle. Each square bend U bolt is called out as diameter by inside width by inside leg length by thread length, and inside width plus inside leg length are the two measurements that decide whether the legs clear your mounting plate hole centers. Assemblies can also ship kitted with nuts of your choice so your line receives one part number rather than three.

Bent and Threaded In House, Fast Quotes, Shipped From Central Nebraska

Because these are manufactured to order rather than resold, the bend, leg length, and thread length get built to your print instead of forcing you to settle for the nearest catalog size. Quotes are targeted back within an hour, minimum order quantities stay low and flexible for pilot builds and short runs, and our Stock and Release program lets you commit to an annual quantity and pull scheduled releases without carrying the whole lot. Matching nuts and washers ship from stock alongside your order, and L Bolts or cut to length studs run on the same lines if the assembly needs them. Talk to a specialist through the contact us page if you want the whole fastener package quoted together.

Square Bend U Bolt FAQs

What measurements do you need to quote a square U bolt?

Rod diameter, thread pitch, inside width between the legs, inside leg length, and thread length.

Which material should I specify for a wet or chemical environment?

304 stainless performs best in high moisture service, while zinc and zinc yellow give general outdoor corrosion protection at a lower cost.

Can you make a size that is not listed on this page?

Yes. Dimensions outside the stocked range are manufactured to your specifications through the Square U Bolt RFQ form.

Do you supply the nuts and washers to go with them?

Yes, from stock, and they can be kitted with the U bolts under a single part number.

Is there a minimum order quantity?

$250.00 minimum order for a production run. If we have stock, we have a $50.00 minimum order. Minimums are low and flexible, and the exact quantity is confirmed on your quote.

Are metric square U bolts available?

M16 square U bolts are made in house, and we can provide other metric sizes upon request.

Send Your Dimensions and Get a Price Back Today

Fill out the Square U Bolt RFQ form with your diameter, inside width, inside leg length, thread length, material, and finish. If you would rather talk it through first, reach a fastener specialist through our Contact page.

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