The Simpson ATR 5/8 in. x 24 in. Zinc-Plated All-Thread Rod is a fully threaded tension transfer element engineered by Simpson for use with Simpson Strong-Tie adhesives. Threaded along its entire length, this all-thread rod delivers the flexibility contractors and builders need for structural anchoring applications - including floor-to-floor holdown systems - where reliable load transfer and precise positioning are critical. The zinc-plated steel construction provides corrosion resistance suitable for a wide range of installation conditions.

Key Features

• Fully threaded along the entire length - allows the rod to be engaged, cut, or positioned at any point, eliminating wasted material and simplifying installation
• Cut to length for convenience - gives installers the flexibility to size the rod on-site to meet exact project requirements without special preparation
• 5/8 in. diameter x 24 in. length - a purpose-sized form factor suited to floor-to-floor holdown assemblies and common structural anchoring configurations
• Zinc-plated steel construction - provides a corrosion-resistant finish appropriate for a variety of structural and anchoring environments
• UNC Class 2A or 1A thread specifications - ensures compatibility with standard UNC fasteners and hardware, reducing the risk of fitment issues on the job site

Why This Product

• Built for Simpson Strong-Tie adhesive anchoring systems - this all-thread rod is specifically designed as a tension transfer element for use with Simpson Strong-Tie adhesives, making it a natural fit for holdown and structural anchoring work that demands system-level compatibility
• Maximum installation flexibility - because the rod is fully threaded from end to end, it can be cut to any required length and engaged at any point along its shaft, giving installers precise control without sacrificing structural performance
• Domestic steel construction with a protective finish - the zinc-plated steel rod balances strength and corrosion resistance, with a hot-dipped galvanized finish also available from Simpson for projects requiring a higher level of protection
• Versatile across multiple structural applications - while optimized for floor-to-floor holdown systems, this threaded rod supports a wide range of anchoring solutions, making it a practical choice for projects with varied fastening requirements

Specifications

• Model Number (MPN): ATR5/8X24ZP
• Brand: Simpson Strong-Tie
• Diameter: 5/8 in.
• Length: 24 in.
• Material: Steel
• Coating/Finish: Zinc Plated
• 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 ATR5/8X24ZP all-thread rod used for?

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

Is the rod threaded along its entire length?

Yes. The ATR5/8X24ZP is fully threaded along the entire length of the rod, providing maximum flexibility for cutting and positioning during installation.

What thread specification does this rod use?

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

What finish does this all-thread rod have, and are other finishes available?

The ATR5/8X24ZP features a zinc-plated steel finish. Simpson Strong-Tie ATR rods are also available with a hot-dipped galvanized finish for applications requiring a higher level of corrosion protection.

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