The Simpson ATR 1/2 in. x 18 in. Hot-Dip Galvanized All-Thread Rod by Simpson is a fully threaded tension transfer element engineered for use with Simpson Strong-Tie adhesives across a wide range of structural anchoring applications. Designed to handle demanding tasks such as floor-to-floor holdowns, this steel all-thread rod pairs a robust hot-dip galvanized finish with full-length threading, giving contractors and builders the flexibility they need on the job site.

Key Features

• Fully threaded along the entire length of the rod - allows fasteners, nuts, and anchors to be positioned anywhere along the rod, maximizing placement flexibility for your specific application
• Can be cut to length - reduces material waste and speeds up installation by letting you size the rod to fit your project without sourcing custom-length hardware
• Hot-dip galvanized coating - delivers extra corrosion resistance compared to standard zinc-plated finishes, making this rod a reliable choice for exterior environments and treated-wood applications where moisture and chemical exposure are ongoing concerns
• UNC Class 2A or 1A thread specifications - ensures compatibility with standard UNC nuts and mating hardware, simplifying procurement and reducing the risk of mismatched fasteners on site
• Steel construction - provides the structural strength required for tension transfer and anchoring duties in demanding residential and commercial building applications

Why This Product

• Purpose-built for adhesive anchor systems - designed specifically as a tension transfer element for use with Simpson Strong-Tie adhesives, this fully threaded rod integrates cleanly into proven anchoring systems rather than serving as a generic fastener
• Hot-dip galvanization adds long-term durability where it matters most - for projects involving treated lumber or exposed exterior conditions, the HDG finish provides a meaningful upgrade in corrosion protection over zinc-plated alternatives, helping the installation hold up over time
• Full-length threading gives you job-site flexibility - because every inch of the rod is threaded, you can cut the rod to the exact length you need and still engage hardware at any point along it, cutting down on waste and callbacks
• Domestic manufacturing and standard thread specs mean predictable compatibility - UNC Class 2A or 1A threading aligns with widely available nuts and hardware, so sourcing complementary fasteners stays straightforward on any project

Specifications

• Model Number (MPN): ATR1/2X18HDG
• Brand: Simpson Strong-Tie
• Diameter: 1/2 in.
• Length: 18 in.
• Material: Steel
• Coating: Hot-Dip Galvanized
• Finish: Hot-Dip Galvanized
• Thread Type: UNC Class 2A or 1A
• Country of Origin: United States

Frequently Asked Questions

What is the primary use of the Simpson ATR1/2X18HDG all-thread rod?

The ATR1/2X18HDG 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.

Why choose hot-dip galvanized (HDG) over zinc-plated finish?

Hot-dip galvanization offers extra corrosion resistance compared to zinc-plated finishes, making the HDG version especially suitable for exterior environments and applications involving treated wood where moisture and chemical exposure are a concern.

Is this rod fully threaded along its entire length?

Yes. The ATR1/2X18HDG is fully threaded along the entire 18-inch length of the rod, providing flexibility for cutting to length and positioning fasteners or anchors anywhere along the rod.

What thread specification does the ATR1/2X18HDG comply with?

This all-thread rod meets UNC Class 2A or 1A thread specifications, ensuring compatibility with standard UNC nuts and hardware designed to those tolerance classes.

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