The Simpson ATR 1-1/4 in. x 24 in. Zinc-Plated All-Thread Rod is a fully threaded tension transfer element from Simpson, engineered specifically for use with Simpson Strong-Tie adhesives in structural anchoring applications. Built from steel with a zinc-plated finish and threaded along its entire length, this all-thread rod is suited for demanding structural tasks including floor-to-floor holdowns and a wide range of other anchoring configurations where reliable load transfer is critical.

Key Features

• Fully threaded along the entire length - allows fasteners and hardware to be positioned anywhere on the rod, maximizing flexibility for varied installation depths and configurations
• Cut to length for convenience - eliminates the need to source custom-length rods, letting installers trim the rod on-site to fit the exact requirements of each application
• 1-1/4 in. diameter with UNC Class 2A or 1A thread specifications - ensures compatibility with appropriately matched hardware and fasteners, supporting confident integration into structural assemblies
• Zinc-plated steel construction - provides a protective coating over a strong steel core, pairing corrosion resistance with the structural integrity required for tension transfer applications
• Designed for use with Simpson Strong-Tie adhesives - purpose-matched for adhesive anchor systems, giving structural professionals a cohesive, application-specific anchoring solution

Why This Product

• Versatile structural anchoring in one rod - because this all-thread rod is fully threaded from end to end, it supports a wide range of anchoring solutions beyond floor-to-floor holdowns, making it a practical choice for professionals who need one component to serve multiple structural roles
• Site-ready flexibility - the cut-to-length design means installers are not locked into a fixed usable length, reducing material waste and allowing precise fitting without special equipment or pre-ordering custom sizes
• Purpose-built for adhesive anchor systems - engineered as a tension transfer element for use with Simpson Strong-Tie adhesives, this rod is designed from the start as part of a cohesive system rather than a generic fastener, supporting more predictable structural performance
• Made in the United States from zinc-plated steel - the zinc-plated finish delivers protective coverage suited to the structural applications this rod is intended for, while domestic production reflects consistent manufacturing standards

Specifications

• Model Number: ATR1-1/4X24ZP
• Diameter: 1-1/4 in.
• Length: 24 in.
• Material: Steel
• Coating: Zinc Plated
• Finish: Zinc Plated
• Thread Type: UNC Class 2A or 1A
• Country of Origin: United States

Approved Applications

• Tension transfer in structural anchoring systems
• Floor-to-floor holdown applications
• Use with Simpson Strong-Tie adhesives for anchoring solutions
• Wide range of structural anchoring configurations

Frequently Asked Questions

What is the ATR1-1/4X24ZP designed to be used with?

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

Is this rod fully threaded or only partially threaded?

The ATR all-thread rod is fully threaded along the entire length of the rod, providing maximum versatility for cutting to the required length and positioning fasteners or hardware anywhere along the rod.

What finish and material is this rod made from?

This rod is manufactured from steel with a zinc-plated finish, providing a protective coating suitable for the applications it is intended for. A hot-dipped galvanized finish option is also available in the ATR product line.

What thread specification does the ATR1-1/4X24ZP use?

This all-thread rod meets UNC Class 2A or 1A thread specifications at a 1-1/4 in. diameter, ensuring compatibility with appropriately matched hardware and fasteners that share the same material and finish.

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