The Simpson ATR 5/8 in. x 8 in. Zinc-Plated All-Thread Rod is a fully threaded tension transfer element from Simpson, engineered for use with Simpson Strong-Tie adhesives in demanding structural applications. Its continuous threading runs the entire length of the rod, making it a versatile anchoring solution for floor-to-floor holdown connections and a wide range of other structural anchoring configurations requiring reliable tension transfer.

Key Features

• Fully threaded along the entire length - continuous threading maximizes anchoring flexibility, allowing the rod to be positioned and engaged at any point without sacrificing holding capacity
• Cut to length for convenience - contractors can trim the rod on site to fit specific installation depths, reducing material waste and simplifying job-site workflow
• 5/8 in. diameter construction - provides the cross-sectional strength needed for structural tension transfer in holdown and adhesive anchor applications
• Zinc-plated steel finish - delivers a corrosion-resistant protective coating suited for interior structural environments where a reliable barrier against rust is required
• UNC Class 2A or 1A thread specifications - conforms to standard unified coarse thread classifications, ensuring compatibility with corresponding nuts, couplers, and hardware used in structural assemblies
• Designed for use with Simpson Strong-Tie adhesives - functions as an integrated tension transfer element within a proven adhesive anchoring system, supporting consistent, engineered performance

Why This Product

• Engineered for adhesive anchor systems - purpose-built as a tension transfer element for use with Simpson Strong-Tie adhesives, this all-thread rod is designed to work within a cohesive structural anchoring system rather than as a generic fastener, giving installers confidence in application compatibility
• Versatile across multiple structural applications - from floor-to-floor holdown connections to a wide range of other anchoring solutions, the fully threaded design adapts to varied installation requirements without the need for additional hardware or partial-thread workarounds
• Field-cuttable for faster, cleaner installs - the cut-to-length feature means crews can tailor each rod to the exact depth or configuration required on site, streamlining installation and reducing the need for pre-cut inventory
• Available in zinc-plated or hot-dipped galvanized finishes - the ATR all-thread rod can be matched to the corrosion protection level the application demands, offering finish flexibility within a single trusted product family

Specifications

• Model Number (MPN): ATR5/8X8ZP
• Brand: Simpson Strong-Tie
• Diameter: 5/8 in.
• Length: 8 in.
• Material: Steel
• Coating / Finish: Zinc Plated
• Thread Type: UNC Class 2A or 1A
• Thread Coverage: Fully threaded (entire length)
• Country of Origin: United States

Approved Applications

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

Frequently Asked Questions

What is the ATR all-thread rod used for?

The ATR is a tension transfer element designed for use with Simpson Strong-Tie adhesives. It provides versatility for structural applications including floor-to-floor holdowns along with a wide range of other anchoring solutions.

Is the rod threaded along its entire length?

Yes. The ATR5/8X8ZP is fully threaded along the entire length of the rod, which contributes to its versatility across multiple anchoring configurations.

What thread specification does this rod use?

This rod conforms to UNC Class 2A or 1A thread specifications, which are standard unified coarse thread classifications used in structural hardware applications.

What finish options are available for the ATR all-thread rod?

The ATR all-thread rod is available with a zinc-plated finish or a hot-dipped galvanized finish, allowing selection based on the corrosion resistance requirements of the application.

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