
Stainless Steel U Bolts: Durable & High Streghth
U-bolts serve as vital parts on almost all trailers and heavy-duty vehicles. They ensure that your vehicles are aligned, stable, and can carry loads efficiently. These high-performance stainless steel U bolts are made from industrial-grade steel, forged to precision, and meet the manufacturer's suggested specifications. Our U-bolts fasteners are the best when it comes to withstanding corrosion,n whether the vehicle is being used for off-road racing, commercial transportation, or just as a standard passenger car.
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Created from carbon or alloy steel, which has been treated with heat
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Zinc coating or powder coating that helps resist rust
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Different sizes and types of threads are available
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International standard certifications for compliance with quality and safety guidelines

Stainless Steel U Bolts Applications
Our stainless steel U bolts are tested under extreme torque and vibration conditions to ensure optimal long-term performance in the most demanding environments.

U Bolts For Leaf Springs
On trailers, particularly types used for hauling equipment or cargo, U bolts secure the axle’s position underneath the trailer bed. They:
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Enhance operational safety and stability during towing with regard to axle positioning.
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Accommodate repetitive changes in loads during the loading/unloading operations.
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Minimize lateral movement and reduce frame stress by maintaining the suspension in a tight and centered position.

Agricultural and Construction Equipment
U bolts fasteners are important to construction machines, backhoes, and loaders, as well as for agricultural equipment such as tractors and combines, U bolts for leaf springs serve the purpose of stabilizing the heavy axles under severe twisting forces. In this case, U-bolts serve to:
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Attach multi-leaf springs to high-load axles.
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Withstand exposure to water, soil, particulates, or chemicals.
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Permit the function of equipment mounted on shifting or unlevel ground without relative motion between the axles of the equipment and the mounting structure.

Heavy Duty Trucks
The attachment of the leaf springs on the U-bolt mounted axle housing contains a suspension system, and U-bolt fasteners are critical components. In both light and heavy-duty trucks, they assist in:
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Supporting multiple payloads without losing axle centering.
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Dissipating shock from road surfaces and vibrations.
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Restricting shunting of the leaf spring, during braking or sharp angular motion.
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U bolts for leaf springs must endure great static tension and dynamic loads, especially for commercial logistics fleets that drive long distances every day.
Technical Specifications of Our Stainless Steel U Bolts
Our stainless steel U bolts are designed to meet or exceed OEM standards and are available in a wide range of sizes, finishes, and material options to accommodate various vehicle and axle configurations. Whether you're sourcing for heavy-duty trucks, off-road vehicles, or industrial machinery, these are some specifications of U bolts made for leaf springs to ensure compatibility and performance.
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Material Options: Carbon steel, alloy steel, stainless steel
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Thread Type: Fine thread / Coarse thread
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Finish: Black oxide, Zinc-plated, Hot-dip galvanized
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Diameter Range: 3/8" to 1-1/4"
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Length Options: 3" to 14" (custom lengths available)
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Shape: Round bend, Square bend, Semi-round
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Grade: Grade 5, Grade 8, ASTM A325, etc.
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Load Capacity: Up to 20,000 lbs (varies by size)

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What is a U-bolt used for?U-bolts are used to support and secure pipes, tubes, or round objects to a surface. They’re commonly used in plumbing, automotive, construction, and mechanical applications.
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What sizes of U-bolts do you offer?We offer U-bolts in a wide range of sizes, including: Diameter: 1/4" to 2" (or M6 to M48 metric) Length: Custom or standard lengths available Pipe Sizes: Compatible with various nominal pipe diameters (NPS) Custom sizes can be made to order—just provide your specs.
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What materials are your U-bolts made from?We manufacture U-bolts from: Carbon steel Stainless steel (304, 316) Galvanized steel Alloy steel (on request) Coatings like zinc plating or hot-dip galvanizing are also available for corrosion resistance.
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Can I order custom U-bolts?Yes, we offer custom U-bolts based on your dimensions, thread type, material, and finish requirements. Contact us with your drawings or specs for a quote.
Why Choose Us

As a trusted manufacturer and supplier of stainless steel U bolts for over 50 years, we bring unmatched precision and quality to every product. All our U bolts are subjected to rigorous quality checks, including tensile strength testing, salt spray tests, and dimensional accuracy verification. We also offer custom U bolts for leaf springs to fit non-standard or modified axle setups
Benefits of choosing us:
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Short lead times and bulk order discounts
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OEM and aftermarket compatibility
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Engineering support and CAD drawing services
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Global shipping with secure packaging