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Tie Down Engineering 86337 U-Bolt 7/16-14 Thread x 4.06" Width x 2.81" Length

Manufacturer

Tie Down Eng

<h3>Engineering Excellence for Trailer and Marine Applications</h3> <p>Since 1969, Tie Down Engineering has built a reputation as one of America's premier manufacturers of trailer components and marine accessories. Based in Atlanta, Georgia, this family-owned company operates from a massive 825,000-square-foot facility where advanced manufacturing technologies meet traditional American craftsmanship. With over 95 patents and more than 7,000 products in their portfolio, Tie Down Engineering represents decades of practical innovation designed to solve real-world challenges for boat owners, trailer operators, and commercial customers.</p> <p>What sets Tie Down Engineering apart is their commitment to in-house engineering and manufacturing. From CNC cutting and robotic welding to powder coating and rigorous testing, every product is designed and built in the United States. Their ISO 9001:2015 certification ensures that quality control standards remain consistently high across all product lines. This vertical integration allows the company to maintain strict oversight of materials, processes, and performance—critical factors when products must withstand demanding marine environments, heavy loads, and years of outdoor exposure.</p> <h3>Comprehensive Trailer Protection and Components</h3> <p>Tie Down Engineering specializes in critical trailer components that keep boats and cargo safe on the road. Their extensive selection of <a href="/6667-tie-down-eng-fenders-mounting-hardware-200397">fenders and mounting hardware</a> includes innovative bracket-less designs that simplify installation and provide clean, professional aesthetics. These high-density polyethylene fenders are engineered to resist UV degradation, impact damage, and harsh weather conditions, making them ideal for saltwater and freshwater applications alike. The company's <a href="/6667-tie-down-eng-fender-1380">fender</a> offerings accommodate various wheel sizes and trailer configurations, with reinforced construction that provides long-term durability even under demanding use.</p> <p>Safety remains paramount in trailer operation, which is why Tie Down Engineering produces robust <a href="/6667-tie-down-eng-safety-chains-cables-accessories-200888">safety chains, cables, and accessories</a> engineered to meet or exceed industry safety standards. These components serve as critical backup systems that protect against coupler failure, providing peace of mind during highway travel and boat launching. The company also offers a range of <a href="/6667-tie-down-eng-electronic-accessories-145">electronic accessories</a> and comprehensive <a href="/6667-tie-down-eng-trailer-parts-accessories-201094">trailer parts and accessories</a> that address everything from lighting and wiring to rollers, guide-ons, and mounting hardware. Each component is designed to integrate seamlessly with standard industry specifications, simplifying replacement and upgrade projects.</p> <h3>Built for the Marine Environment</h3> <p>Tie Down Engineering understands the unique demands of marine applications, where corrosion resistance and reliability are non-negotiable. Their trailer components are specifically engineered to withstand saltwater exposure, boat ramp immersion, and the constant moisture inherent in boating activities. Many products feature galvanized or aluminum construction, corrosion-resistant coatings, and sealed bearing systems that extend service life even in the harshest coastal environments. This attention to material science and protective finishes has made Tie Down Engineering a trusted name among boat dealers, marinas, and individual boat owners who demand components that won't fail when it matters most.</p> <p>The company serves diverse industries beyond marine and trailer applications, including manufactured housing, roofing, workplace safety, and agriculture. This broad manufacturing expertise translates into cross-industry innovations that benefit all product lines. Whether you're maintaining a boat trailer, upgrading safety equipment, or replacing worn components, Tie Down Engineering delivers the combination of American manufacturing quality, engineering innovation, and practical design that professionals and enthusiasts rely on for dependable performance season after season.</p>

Part Number

86337
06/01/2036 1:50 AM
Sale Price

$4.84

In Stock (10+)

delivery box

Usually delivered within 2 days

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No Hassle Returns

No Hassle Returns

Live-in-stock inventory

Live-in-stock inventory

Fitment guaranteed

Fitment guaranteed

Product Details

The Tie Down Engineering 86337 is a heavy-duty galvanized square U-bolt kit designed for secure trailer axle mounting and suspension applications. This corrosion-resistant fastening solution features hot-dip galvanized coating for maximum protection against rust and the elements, making it ideal for boat trailers, utility trailers, and other marine or outdoor equipment.

Key Specifications:

  • Thread Size: 7/16-14 (7/16" diameter, 14 threads per inch)
  • Inside Width: 4.06 inches
  • Inside Length: 2.81 inches
  • Thread Length: 1-3/4 inches
  • Square U-bolt configuration
  • Hot-dip galvanized finish for superior corrosion resistance

Complete Kit Includes:

  • Square U-bolt with hot-dip galvanized coating
  • Flat washers
  • Lock washers
  • Hex nuts

This U-bolt kit provides a reliable fastening solution for securing axles to trailer leaf springs and mounting various components to trailer frames. The hot-dip galvanized finish offers enhanced protection against rust buildup compared to standard zinc plating, ensuring long-lasting performance in harsh marine and outdoor environments. Made in the USA by Tie Down Engineering, a trusted manufacturer with over 55 years of experience in trailer and marine hardware.

Great experience last time

I would love more pictures of actual product and on viechle

I was very happy with the speed in which i received the product, the product itself, the product price and the shipping cost. the packaging was great also.This was definitely a five star transaction. rkerley

Really pleased with the service I had. They had the best price I could find, and they shipped quickly. Highly satisfied

Fast and inexpensive. Thanks.

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