The Simpson ATR 1/2 in. x 24 in. Hot-Dip Galvanized All-Thread Rod is a fully threaded steel tension transfer element engineered for use with Simpson adhesives across a wide range of structural anchoring applications. Designed for demanding conditions, this all-thread rod delivers reliable performance in floor-to-floor holdown systems and a broad variety of anchoring solutions where corrosion resistance and consistent thread engagement are critical.

Key Features

• Fully threaded along the entire length - gives you maximum flexibility to position, adjust, and cut the rod precisely where your application requires it, without dead zones or unthreaded sections limiting your options.
• Cut to length for convenience - saves time on the job by allowing the rod to be trimmed to fit the exact depth or spacing your structural assembly demands.
• Hot-dip galvanized coating - provides extra corrosion resistance compared to standard zinc-plated finishes, making this rod well-suited for exterior environments and treated-wood construction where moisture and corrosive elements are a concern.
• UNC Class 2A or 1A thread specifications - ensures compatibility with standard structural hardware components designed to those tolerances, reducing the risk of mismatched fasteners on the job.
• 1/2 in. diameter x 24 in. length - a commonly specified size for holdown and anchoring applications, reducing the need for custom fabrication on typical structural assemblies.

Why This Product

• Built for the conditions standard rods fail - the hot-dip galvanized finish is specifically formulated to hold up in exterior settings and against the corrosive chemicals present in treated wood, where a zinc-plated rod would degrade prematurely.
• Engineered as a tension transfer element - the ATR is designed from the ground up to work within Simpson structural systems, including floor-to-floor holdowns, giving builders confidence that the rod is purpose-built for the loads these applications demand.
• Pairs with Simpson adhesives for a verified anchoring system - using this rod with Simpson adhesives means working within a system where the components are designed to perform together, reducing guesswork in critical structural connections.
• Domestic steel construction - manufactured in the United States from steel, supporting quality expectations for commercial and residential structural work where material traceability matters.

Specifications

• Model Number (MPN): ATR1/2X24HDG
• Brand: Simpson Strong-Tie
• Diameter: 1/2 in.
• Length: 24 in.
• Material: Steel
• Coating: Hot-Dip Galvanized
• Finish: Hot-Dip Galvanized
• Thread Type: UNC Class 2A or 1A
• Country of Origin: United States

Approved Applications

• Structural anchoring solutions requiring tension transfer
• Floor-to-floor holdown systems
• Exterior applications where corrosion resistance is required
• Treated-wood construction applications
• Use with Simpson Strong-Tie adhesives for secure anchoring

Frequently Asked Questions

What makes the hot-dip galvanized finish on this all-thread rod different from a zinc-plated finish?

Hot-dip galvanization (HDG) provides an extra layer of corrosion resistance compared to zinc-plated finishes, making the ATR1/2X24HDG particularly well-suited for exterior environments and applications involving treated wood, where exposure to moisture and corrosive elements is a concern.

Is this rod fully threaded along its entire length?

Yes. The ATR1/2X24HDG is fully threaded along the entire 24-inch length of the rod, providing maximum flexibility for positioning and adjusting within structural assemblies.

What thread specification does this all-thread rod conform to?

This rod meets UNC Class 2A or 1A thread specifications, ensuring compatibility with standard hardware components designed to those tolerances.

What is the primary use case for the Simpson Strong-Tie ATR all-thread rod?

The ATR all-thread rod is a tension transfer element designed for use with Simpson Strong-Tie adhesives, supporting a wide range of structural applications including floor-to-floor holdowns and other anchoring solutions.

Note: Product dimensions and/or thread length may differ from picture. Please see the item description above for specifications.