Tie Down Engineering Square U-Bolt 1/2 in.-13 x 3-1/16 in. X 3-13/16 in., Zinc Plated, Part 86222

The Tie Down Engineering 86222 is a square-bend U-bolt built for mounting trailer springs, brackets, and axle hardware to 1-1/2 inch square frame tubing. It is manufactured with a zinc-plated finish that resists corrosion during everyday road and marine-trailer exposure, keeping the threads and bend clean for reliable installation and future removal. The U-bolt has a square shape to match flat-sided frame stock, with 1/2 in.-13 threaded ends sized to accept standard 1/2 inch nuts and washers. Overall it measures 1/2 in. X 3-1/16 in. X 3-13/16 in., a compact size intended for spring plates, roller brackets, and similar square-tube mounting points on boat trailers and utility trailers. The finish is gray zinc plating over the fastener body, with a right-hand thread standard to U.S. Hardware. This listing is for a single U-bolt (each); Tie Down also offers this same 1-1/2 inch square size as a matched pair under a different part number, and a round-shape version for round frame tubing, for buyers who need an alternate configuration. Because it is a precision-bent mounting fastener rather than a universal bolt, matching the frame size and shape (square vs. Round) is important to get a proper, snug fit without stressing the bend.

Specifications

• Brand: Tie Down Engineering
• Manufacturer Part Number: 86222
• Shape: Square
• Frame Size: 1-1/2 in.
• Thread Size: 1/2 in.-13
• Width: 3-1/16 in.
• Length: 3-13/16 in.
• Material: Zinc
• Exterior Finish: Zinc Plated
• Color: Gray
• Fastener Type: U-Bolt
• Thread Style: Right Hand
• Manufacturer Grade: Grade 2
• Weight: 0.68 pounds
• Package Quantity: 1 (Each)
• UPC: 081628862225

Fitment

Sized for 1-1/2 inch square trailer frame or axle tubing, with 1/2 in.-13 threaded ends for securing spring plates, roller brackets, and similar square-mount hardware.

Frequently Asked Questions

What size frame does the Tie Down 86222 U-bolt fit? It is sized for 1-1/2 inch square trailer frame or axle tubing, matching the square bend of part 86222.

Is this U-bolt sold as a single piece or a pair? Part 86222 is sold individually (each). Tie Down Engineering also offers the same 1-1/2 inch square size as a matched pair under a separate part number for buyers who need two at once.

What thread size does the 86222 U-bolt use? The threaded ends are 1/2 in.-13, sized for standard 1/2 inch nuts and washers.

What are the overall dimensions of this U-bolt? Tie Down 86222 measures 1/2 in. X 3-1/16 in. X 3-13/16 in. Overall.

What finish does the 86222 U-bolt have? It has a zinc-plated finish in gray, applied for corrosion resistance on the fastener body.

Does the 86222 U-bolt fit round trailer frame tubing? No, this is a square-shaped U-bolt for square frame tubing. Tie Down offers a round-shape version, part 86226, for round frame applications.

How much does the Tie Down 86222 U-bolt weigh? It weighs 0.68 pounds.

Is the 86222 U-bolt right-hand or left-hand threaded? It uses a standard right-hand thread.

What is the manufacturer grade of this U-bolt? Tie Down rates the 86222 U-bolt as Grade 2.

What does the 86222 U-bolt come with? This listing includes the U-bolt itself (each); it does not include a separate hardware kit.

Can the 86222 U-bolt be used for spring plate or roller bracket mounting? Yes, its 1-1/2 inch square sizing and 1/2 in.-13 threads suit spring plate, roller bracket, and similar square-tube mounting applications.

Is part 86222 the same as the 86214 U-bolt? No, 86214 and 86222 are separate part numbers within Tie Down's square U-bolt line for the same 1-1/2 inch square frame size; confirm dimensions before substituting one for the other.