The Simpson ATR 1/2 in. x 24 in. Zinc-Plated All-Thread Rod is a fully threaded tension transfer element engineered by Simpson for use with Simpson adhesives in structural anchoring applications. Threaded along its entire length, this zinc-plated steel rod delivers reliable performance in floor-to-floor holdown systems and a wide range of other anchoring solutions, making it a go-to fastening component for structural contractors and builders.

Key Features

• Fully threaded along the entire length - gives installers maximum flexibility when positioning nuts and hardware at any point on the rod, reducing waste and simplifying assembly.
• Cut to length for convenience - allows the rod to be field-trimmed to the exact dimension needed, accommodating varied structural conditions without requiring special-ordered stock.
• Zinc-plated steel construction - provides a protective coating over steel that helps resist corrosion in typical construction environments, extending service life.
• UNC Class 2A or 1A thread specifications - ensures compatibility with standard nuts, couplers, and hardware used in structural anchoring assemblies.
• Designed for use with Simpson adhesives as a tension transfer element - pairs directly with a trusted adhesive anchoring system, supporting engineered structural connections such as floor-to-floor holdowns.

Why This Product

• Versatile anchoring performance - because the rod is fully threaded from end to end, it adapts to a broad range of structural anchoring scenarios beyond holdowns, reducing the need to stock multiple rod configurations.
• Engineered for adhesive anchor systems - purpose-built as a tension transfer element for use with Simpson adhesives, this all-thread rod is designed to work within a tested, compatible system rather than as a generic fastener.
• Zinc-plated finish balances protection and value - the zinc-plated coating offers a practical level of corrosion resistance for steel in structural applications, with a hot-dipped galvanized option also available for more demanding exposure conditions.
• Made in the United States - domestic production supports consistent manufacturing quality and reliable material sourcing for construction projects with strict supply requirements.

Specifications

• Model Number: ATR1/2X24ZP
• Brand: Simpson Strong-Tie
• Material: Steel
• Coating: Zinc Plated
• Finish: Zinc Plated
• Diameter: 1/2 in.
• Length: 24 in.
• Thread Type: UNC Class 2A or 1A
• Country of Origin: United States

Approved Applications

• Floor-to-floor holdown systems
• Structural anchoring solutions
• Use with Simpson Strong-Tie adhesives as a tension transfer element

Frequently Asked Questions

What is the diameter and length of this all-thread rod?

This Simpson Strong-Tie ATR all-thread rod has a diameter of 1/2 in. and a length of 24 in.

What thread specification does this rod conform to?

This rod meets UNC Class 2A or 1A thread specifications.

What finish is applied to this all-thread rod?

This rod features a zinc-plated finish, offering a protective coating for steel in structural applications. It is also available in a hot-dipped galvanized finish.

What is the intended use of the Simpson ATR all-thread rod?

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

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