The Simpson ATR 1-1/8 in. x 24 in. Zinc-Plated All-Thread Rod by Simpson is a fully threaded tension transfer element engineered for use with Simpson Strong-Tie adhesives in structural applications. Threaded along its entire length, this zinc-plated steel rod is built for floor-to-floor holdown systems and a wide range of anchoring solutions where reliable load transfer and consistent thread engagement are essential.

Key Features

• Fully threaded along the entire length - maximizes thread engagement throughout the rod, supporting consistent tension transfer in demanding structural and anchoring applications
• Cut to length for convenience - allows the rod to be sized on-site to fit the specific requirements of your installation, reducing material waste and saving time
• Zinc-plated steel construction - provides a level of corrosion resistance suited to the rod's intended structural applications while maintaining the strength expected from steel
• UNC Class 2A or 1A thread specifications - ensures compatibility with appropriately matched nuts and hardware, promoting a secure and properly fitted connection

Why This Product

• Designed specifically as a tension transfer element - engineered for use with Simpson Strong-Tie adhesives, this threaded rod is purpose-built for structural anchoring scenarios rather than being a generic fastener, making it a dependable choice for holdown and adhesive anchor assemblies
• Versatile for multiple structural applications - suited for floor-to-floor holdown systems as well as a wide range of other anchoring solutions, giving contractors and builders flexibility across different project types without needing multiple rod specifications
• On-site customization without compromise - the cut-to-length design lets installers trim the rod as needed for the exact installation depth or configuration, supporting cleaner, more precise assemblies
• Made in the United States by a trusted structural connector brand - Simpson backs this all-thread rod with the engineering standards and quality controls associated with their broader line of structural connectors and anchoring products

Specifications

• Model Number: ATR1-1/8X24ZP
• Brand: Simpson Strong-Tie
• Material: Steel
• Coating: Zinc Plated
• Finish: Zinc Plated
• Diameter: 1-1/8 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 the ATR1-1/8X24ZP all-thread rod?

This rod has a diameter of 1-1/8 in. and a length of 24 in., making it suitable for a variety of structural anchoring and holdown applications.

What thread specification does this all-thread rod use?

The ATR1-1/8X24ZP conforms to UNC Class 2A or 1A thread specifications, ensuring compatibility with appropriately matched nuts and hardware of the same material and finish.

What finish is applied to this all-thread rod, and why does it matter?

This rod features a zinc-plated steel finish, which provides a level of corrosion resistance suitable for the intended applications. When pairing a nut with this threaded rod, the material and finish must match to ensure a proper fit.

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

The coated ATR is designed as a tension transfer element for use with Simpson Strong-Tie adhesives. It is suited for structural applications including floor-to-floor holdowns and a wide range of other anchoring solutions, and it is fully threaded along the entire length of the rod.

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