The Simpson Strong-Tie ATRM6-1 All-Thread Rod is a fully threaded 3/4 in. x 12 in. steel rod engineered as a tension transfer element for structural systems designed to resist seismic and wind forces. Built to Grade 55 specifications and conforming to ASTM A36 with a yield strength of 55 ksi and ultimate tensile strength of 75 ksi, this all-thread rod provides a continuous and reliable load path from roof to foundation - making it a trusted component in shearwall overturning restraint systems, continuous rod tiedown assemblies, uplift restraint systems for roofs, and adhesive anchor rod applications.

Key Features

• Precut 12 in. length - arrives ready to install without additional cutting, saving time and labor on the job site
• Grade 55 specification compliance - delivers a minimum yield strength of 55 ksi and ultimate tensile strength of 75 ksi, meeting the structural demands of seismic and wind-force applications
• ASTM A36 material standard - ensures consistent, code-recognized steel quality suitable for use in engineered structural systems
• UNC Class 2A thread specification - provides a standardized fit with compatible nuts, couplers, and connectors used in continuous rod tiedown and uplift restraint systems
• 3/4 in. diameter - sized to carry significant tension loads across shearwall and roof uplift restraint assemblies
• Uncoated black steel finish - a clean, installation-ready surface suited for interior structural applications where corrosion-protective coatings are not required
• Fully threaded along entire length - allows flexible positioning of nuts and couplers anywhere along the rod, maximizing adjustability during installation

Why This Product

• Designed for seismic and wind-force resistance - the ATRM6-1 is specifically engineered as a tension transfer element in structural systems that must maintain a continuous load path from roof to foundation, addressing one of the most critical demands in high-wind and seismic construction zones
• Multi-application versatility - a single rod design that functions in continuous rod tiedown systems for shearwall overturning restraint, uplift restraint systems for roofs, and as an adhesive anchor rod, reducing the number of specialty parts needed on a project
• Precut convenience eliminates field cutting - the 12 in. precut length means installers can work directly from the package without threading or cutting operations, reducing installation time and potential for thread damage
• Made in the United States to Grade 55 and ASTM A36 standards - delivers a domestically produced, specification-verified rod that supports code-compliant structural design documentation

Specifications

• Brand: Simpson Strong-Tie
• MPN: ATRM6-1
• Rod Diameter: 3/4 in.
• Rod Length: 12 in.
• Material: Uncoated Steel
• Finish: Uncoated Steel
• Color: Black
• Thread Type: UNC Class 2A
• Material Specification: ASTM A36
• Yield Strength (Fy): 55 ksi
• Ultimate Tensile Strength (Fu): 75 ksi
• Grade: Grade 55
• Product Class: Threaded Rod
• Quantity: 1
• Country of Origin: United States
• Prop 65: No

Frequently Asked Questions

What structural applications is the ATRM6-1 all-thread rod designed for?

The ATRM6-1 is designed for use as a tension transfer element in structural systems that resist seismic and wind forces. It can be used within a continuous rod tiedown system for shearwall overturning restraint, in an uplift restraint system for roofs, and as an adhesive anchor rod for a variety of other applications.

What are the steel grade and strength specifications of this threaded rod?

The ATRM6-1 meets Grade 55 specifications and conforms to ASTM A36, with a yield strength (Fy) of 55 ksi and an ultimate tensile strength (Fu) of 75 ksi. The thread specification is UNC Class 2A.

Is the rod fully threaded along its entire length?

Yes - this is a fully threaded rod (all-thread rod), meaning threads run the complete length of the 12 in. rod. This allows nuts, couplers, and other hardware to be positioned anywhere along the rod during installation.

Does this rod require any protective coating for structural use?

The ATRM6-1 features an uncoated black steel finish and is suited for interior structural applications where an additional corrosion-protective coating is not specified. For applications requiring corrosion resistance, consult the appropriate Simpson Strong-Tie product for your environment.