Upgrade your trailer suspension system with our Heavy Duty Square Trailer U-Bolts, engineered for maximum strength, durability, and secure axle mounting. Manufactured from high-tensile steel and designed for demanding towing applications, these U-bolts provide a reliable fastening solution for trailer axles, leaf springs, and suspension assemblies.

Available in multiple sizes, these heavy-duty U-bolts are ideal for commercial trailers, utility trailers, agricultural equipment, and off-road applications where strength and safety are essential.

Features & Benefits

• Heavy-duty square U-bolt design for superior axle retention
• Manufactured from durable high-strength steel
• M16 thread size for maximum clamping force
• Suitable for trailer suspension and leaf spring mounting
• Corrosion-resistant finish for long service life
• Ideal for repairs, replacements, and new trailer builds
• Designed for heavy-load and commercial applications

Available Sizes

60mm Square U-Bolt

• Thread Size: M16
• Internal Width: 65mm
• Internal Length: 185mm
• Suitable for 60mm trailer axle applications

70mm Square U-Bolt

• Thread Size: M16
• Internal Width: 75mm
• Internal Length: 240mm
• Suitable for 70mm trailer axle applications

Applications

• Trailer axles
• Leaf spring suspension systems
• Utility trailers
• Car trailers
• Agricultural trailers
• Heavy-duty transport trailers

Our heavy-duty trailer U-bolts are built to withstand harsh road conditions, heavy loads, and continuous use. Whether you’re replacing worn suspension hardware or building a new trailer, these M16 square U-bolts provide the strength and reliability needed for safe towing performance.