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Tie Down Engineering 86336 Galvanized Square U-Bolt Kit 1/2-13 x 3.06 x 4.31

Manufacturer

Tie Down Eng

<h3>About Tie Down Engineering</h3><p>Founded in 1969 and headquartered in Atlanta, Georgia, Tie Down Engineering has spent more than five decades earning its reputation as a global leader in custom manufacturing. What started as a focused effort to deliver better-engineered solutions for American industries has grown into a multi-division powerhouse serving markets that range from marine and mobile home to roofing, agriculture, renewable energy, and beyond. Every product Tie Down makes reflects an engineering-first philosophy — and, notably, they're all proudly made in the USA.</p><p>Tie Down operates six specialized manufacturing divisions, each dedicated to a specific market vertical. This structure lets the brand go deep rather than wide, developing purpose-built hardware that holds up under real-world conditions rather than generic components that merely check a box. Whether you're a boat owner, a contractor, or an OEM trailer manufacturer, there's a good chance Tie Down has already engineered the part you need.</p><h3>Trailer &amp; Marine Product Highlights</h3><p>Among the brand's most recognized product lines are its <a href="/6667-tie-down-eng-fender-1380">trailer fenders</a>, which are a staple for boat trailer owners and OEM builders alike. Tie Down offers fenders in galvanized steel, aluminum, and high-impact polyethylene, covering wheel sizes from 8 inches all the way up to 14–15 inches. Their innovative bracket-less plastic fender design mounts directly to the trailer frame without requiring separate fender brackets — a practical solution that simplifies installation and keeps the setup clean. UV-protected finishes on their plastic fenders resist fading, cracking, and degradation over time, making them a smart choice for trailers that see frequent saltwater exposure.</p><p>Equally important for safe trailering are Tie Down's <a href="/6667-tie-down-eng-safety-chains-cables-accessories-200888">safety chains, cables, and accessories</a>. These zinc-plated and galvanized products serve as the critical backup connection between a tow vehicle and its trailer, providing peace of mind in the unlikely event of coupler failure. Tie Down's safety chain lineup spans Class 2 through Class 4 ratings — from 3,500 lb. to well beyond 5,000 lb. carrying capacities — ensuring there's a properly rated option for light boat trailers and heavier-duty towing applications alike. Chains are sold in pairs and come with durable S-hooks for straightforward installation.</p><h3>Why Tie Down Engineering?</h3><ul style="list-style:disc"><li><strong>55+ years of manufacturing experience</strong> rooted in engineering excellence</li><li><strong>American-made products</strong> built with domestic craftsmanship</li><li><strong>Six specialized divisions</strong> serving marine, agricultural, roofing, and other industries</li><li><strong>Broad material selection</strong> — galvanized steel, aluminum, and high-impact polyethylene options</li><li><strong>OEM and aftermarket coverage</strong> for trailer builders and individual owners</li></ul><p>For anyone who trailers a boat, hauls equipment, or maintains a fleet of utility trailers, Tie Down Engineering's catalog represents a reliable, well-engineered choice backed by decades of field-proven performance.</p>

Part Number

86336
09/12/2036 6:38 AM
Sale Price

$7.27

In Stock (10+)

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Usually delivered within 2 days

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No Hassle Returns

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Product Details

The Tie Down Engineering 86336 is a galvanized square U-bolt kit designed for securing trailer axles to leaf springs. This heavy-duty fastening component features a 1/2-13 thread diameter with 3.06" width and 4.31" overall length, making it ideal for boat trailers, utility trailers, and other recreational vehicle applications.

Key Features:

  • Hot-dipped galvanized finish provides superior corrosion resistance for marine and outdoor environments
  • 1/2-13 thread size ensures secure torquing and load retention
  • Square U-bolt design fits standard trailer suspension systems
  • Designed to attach leaf springs to square axle housings
  • Complete kit includes U-bolt, nuts, and mounting hardware
  • Manufactured by Tie Down Engineering, a trusted name in trailer components since 1969

This square U-bolt is an essential component of trailer suspension systems, working in conjunction with U-bolt plates to create a secure fastening point between the leaf spring and axle assembly. The galvanized coating ensures long-lasting protection against rust and corrosion, particularly important for marine trailer applications where saltwater exposure is common.

i found what i was looking for in no time

Great website ,easy to shop

Good value

Great

I appreciate low cost and free shipping option; however, I did not see an expected date for arrival.

I was very pleased with the price of the part and expediency with which the order was processed. I will definitely consider buying from them again.

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