Simpson ATR 5/8 in. x 18 in. Hot-Dip Galvanized All-Thread Rod (ATR5/8X18HDG) is a fully threaded steel tension transfer element from Simpson Strong-Tie, designed for use with Simpson Strong-Tie adhesives in structural anchoring applications. With a hot-dip galvanized finish, this all-thread rod delivers enhanced corrosion resistance, making it especially well-suited for exterior and treated-wood environments. Its fully threaded design provides versatility across floor-to-floor holdowns and a wide range of other anchoring solutions.

Key Features

• Cut to length for convenience
• Fully threaded along the entire length of the rod
• Diameter: 5/8 in.
• Length: 18 in.
• Hot-dip galvanization (HDG) offers extra corrosion resistance for exterior and treated-wood applications
• UNC Class 2A or 1A thread specifications

Specifications

• MPN: ATR5/8X18HDG
• Brand: Simpson Strong-Tie
• Material: Steel
• Coating: Hot-Dip Galvanized
• Finish: Hot-Dip Galvanized
• Diameter: 5/8 in.
• Length: 18 in.
• Thread Specification: 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
• Exterior applications requiring enhanced corrosion resistance
• Treated-wood construction applications

Frequently Asked Questions

What finish does the ATR5/8X18HDG have, and why does it matter?

This all-thread rod features a hot-dip galvanized (HDG) finish, which offers extra corrosion resistance compared to zinc-plated alternatives. This makes it particularly suitable for exterior applications and use with treated wood, where moisture and chemical exposure can accelerate corrosion on lesser-coated fasteners.

Is the ATR5/8X18HDG fully threaded along its entire length?

Yes. This rod is fully threaded along its entire 18-inch length, providing maximum flexibility for cutting to the exact length needed for your specific application.

What thread specification does this all-thread rod use?

The ATR5/8X18HDG conforms to UNC Class 2A or 1A thread specifications. When pairing this rod with a nut, the material and finish of the nut must match the rod to ensure proper fit and performance.

What is this all-thread rod designed to be used with?

This Simpson Strong-Tie ATR all-thread rod is designed for use as a tension transfer element in conjunction with Simpson Strong-Tie adhesives, supporting structural applications such as floor-to-floor holdowns and a variety of other anchoring solutions.

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