2x ARK Trailer U Bolts 60x80mm Square Galvanised – 1/2″ Diameter with 40mm Thread (SKU: MRUB2G)

ARK MRUB2G Galvanised Square U Bolts are built tough for securing trailer suspension components, brackets, plates, and accessories. With a 60mm internal width and 80mm leg length, these U bolts are ideal for 50mm or 60mm box chassis frames or beam clamping applications.

Manufactured from heavy-duty 1/2” diameter steel and finished with a corrosion-resistant galvanised coating, these U bolts are made to handle tough Australian towing conditions. Each bolt includes a 40mm threaded section for versatile mounting and secure locking.

Sold as a pair (2 U bolts), they are perfect for use on trailers, caravans, boat trailers, roof racks, and various steel fixing projects.

Key Features:

• Internal width: 62mm
• Leg length: 80mm
• Thread length: 40mm
• Thread diameter: 1/2 inch (approx. 12.7mm)
• Square shape for box-section beams and trailer frames
• Hot-dipped galvanised finish for rust protection
• Supplied in pairs – 2 x U bolts included

Use these bolts to lock down axle plates, spring brackets, or any component needing strong, secure, and weatherproof clamping.

FAQ

Q: What size beam or bracket does this fit?

A: These bolts suit beams or components approximately 60mm wide, with 62mm internal clearance.

Q: Are nuts and washers included?

A: This listing includes only the U bolts. You can pair them with 1/2” UNF or UNC hardware as needed.

Q: Is the galvanised coating rustproof?

A: Yes, the hot-dip galvanised finish offers excellent corrosion resistance for outdoor or marine applications.

Q: Can I weld this U bolt onto my trailer?

A: U bolts are designed to clamp rather than be welded. For structural integrity, use with mounting plates and nuts.

Evaluation & Recommendation

The ARK MRUB2G U bolts are suitable for various trailer and RV applications where box-section frames or suspension hardware need reliable securing. Their galvanised finish ensures performance even in wet or coastal environments.

Recommended for:

• Trailer axle brackets or fish plate installations
• Box trailer frame reinforcements
• Boat trailer bunk or guard mounting
• General purpose steel clamping

Installation Tips:

• Use matching galvanised washers and nyloc nuts for secure clamping
• Tighten gradually and evenly across both arms
• Avoid overtightening to prevent thread damage

If you’re unsure about sizing or fitment, feel free to reach out with your beam dimensions for confirmation.