Product Description
The Simpson ATR 7/8 in. x 18 in. All-Thread Rod from Simpson Strong-Tie is a fully threaded rod engineered for tension transfer, giving structural installers a reliable connection element that works across a wide range of building applications. Threaded along its entire length with UNC Class 2A or 1A thread specifications, this rod provides consistent engagement at any point - whether used in hold-downs, anchor connections, or other structural assemblies. The ATR series spans diameters from 3/8 in. up to 2 in., so contractors can match the right rod to their load requirements without compromise.
Key Features
- Fully threaded along the entire length - allows the rod to be cut, positioned, or connected at any point without losing thread engagement, maximizing installation flexibility.
- Cut to length for convenience - arrives ready to work with, reducing on-site prep time and letting installers focus on the connection rather than material prep.
- 7/8 in. diameter - provides a robust cross-section suited to demanding tension transfer applications where a lighter rod would be undersized.
- 18 in. length - offers a practical span for common structural connection depths while remaining manageable during installation.
- Uncoated black steel construction - delivers the inherent strength of steel in applications where an additional coating is not required or where the installer will apply their own treatment.
- UNC Class 2A or 1A thread specifications - conforms to standard Unified National Coarse thread tolerances, ensuring compatibility with matching nuts and hardware that meet the same specification.
Why This Product
- Purpose-built for tension transfer - the ATR is specifically designed for structural tension applications, meaning every dimension and thread specification is chosen to perform in load-bearing connections, not just general fastening tasks.
- Full-length threading means no wasted rod - because every inch of the rod carries thread, installers can cut to an exact working length on the job site and still achieve full thread engagement at both ends.
- Backed by Simpson Strong-Tie engineering - produced by a name recognized throughout the structural connector industry, this threaded rod is part of an ATR series engineered to consistent dimensional and thread-tolerance standards.
- Broad series compatibility - with ATR rods available from 3/8 in. up to 2 in. in diameter, the 7/8 in. size fits naturally into a scalable system, making it straightforward to specify the correct rod across multiple connection points on the same project.
Specifications
- Model Number: ATR7/8X18
- Brand: Simpson Strong-Tie
- Diameter: 7/8 in.
- Length: 18 in.
- Material: Uncoated Steel
- Finish: Uncoated Steel
- Thread Type: UNC Class 2A or 1A
- Country of Origin: United States
Note: Product dimensions and/or thread length may differ from picture. Please see the item description above for specifications.
Frequently Asked Questions
What is the primary purpose of the Simpson ATR All-Thread Rod?
The Simpson Strong-Tie ATR is a fully-threaded rod designed for tension transfer. It is ideal for a variety of structural applications where a reliable, fully threaded connection element is required.
What are the dimensions of the ATR7/8X18?
This rod has a diameter of 7/8 in. and a length of 18 in. It is cut to length for convenience.
What material and finish does this all-thread rod have?
The ATR7/8X18 is made from uncoated black steel with no additional coating or finish applied.
What thread specification does the ATR7/8X18 conform to?
This rod meets UNC Class 2A or 1A thread specifications. When pairing a nut with this threaded rod, ensure the material and finish of the nut match the rod to achieve a proper fit.
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