Tie Down Engineering 86215 Square U-Bolt Kit 1/2-13 x 2-1/16 x 4-13/16 Zinc Plated Trailer Hardware

The Tie Down Engineering 86215 is a zinc-plated steel square U-bolt kit designed for securing brackets, spring seats, and components to trailer frames. With a 1/2-inch diameter (13 threads per inch) square-bend profile, this U-bolt provides a reliable, corrosion-resistant connection point for a wide range of boat, utility, and cargo trailer applications.

Key Specifications:

• Bend Shape: Square
• Rod Diameter / Thread: 1/2"-13 (13 threads per inch)
• Leg Width (B): 2-1/16"
• Leg Length (A): 4-13/16"
• Thread Length (C): 2"
• Finish: Zinc-plated steel for corrosion resistance

Kit Includes:

• 1 x Square U-bolt
• 2 x Flat washers
• 2 x Nyloc (nylon insert lock) nuts

The zinc plating helps protect against rust and environmental exposure, making this U-bolt kit well-suited for marine trailer use where moisture and salt exposure are common concerns. The included nyloc nuts resist loosening from vibration, ensuring a secure, long-lasting connection over the road.