The Simpson Strong-Tie ATRM 5/8 in. x 24 in. All-Thread Rod, Grade 55 is a fully threaded tension transfer element engineered for use in structural systems designed to resist seismic and wind forces. Built from uncoated black steel meeting ASTM A36 material standards with a minimum yield strength of 55 ksi, this precut all-thread rod delivers a continuous and reliable load path from roof to foundation - making it a trusted choice for shearwall overturning restraint, roof uplift restraint, and adhesive anchor rod applications.

Key Features

• Precut 24 in. length - ready to install right out of the package, saving layout and cutting time on the job site
• Meets Grade 55 specifications (Fy = 55 ksi, Fu = 75 ksi) - provides engineered tensile and yield strength values that support use in code-compliant structural tiedown designs
• UNC Class 2A thread specification - ensures compatibility with standard nuts, couplers, and bearing plates used in continuous rod tiedown systems
• ASTM A36 uncoated black steel construction - delivers consistent, industry-recognized material performance for structural rod applications
• 5/8 in. rod diameter - a widely used size in continuous rod tiedown systems, suited for typical residential and light commercial shearwall assemblies
• Fully threaded along the entire 24 in. length - allows flexible placement and cutting to fit varied installation depths and span requirements

Why This Product

• Designed specifically as a tension transfer element for seismic and wind force-resisting systems, this rod supports the critical structural goal of maintaining a continuous load path from roof to foundation - directly addressing one of the most demanding requirements in structural design.
• The precut 24 in. format means no field cutting is needed for standard applications, reducing installation time and the risk of thread damage that can occur when cutting threaded rod on site.
• With dual applications as both a continuous rod tiedown component for shearwall overturning restraint and an uplift restraint rod for roof systems, this single product covers multiple structural connection scenarios.
• Grade 55 strength values (Fy = 55 ksi, Fu = 75 ksi) with a recognized UNC Class 2A thread profile make this rod compatible with engineered designs and simplify the specification and procurement process for structural projects.

Specifications

• Brand: Simpson Strong-Tie
• MPN: ATRM5-2
• Rod Diameter: 5/8 in.
• Rod Length: 24 in.
• Material: Uncoated Steel
• Finish: Uncoated Steel
• Color: Black
• Thread Specification: UNC Class 2A
• Material Standard: ASTM A36
• Yield Strength (Fy): 55 ksi
• Tensile Strength (Fu): 75 ksi
• Grade: Grade 55
• Product Class: Threaded Rod
• Quantity: 1
• Country of Origin: United States
• Prop 65: No

Approved Applications

• Continuous rod tiedown systems for shearwall overturning restraint
• Uplift restraint systems for roof applications
• Adhesive anchor rod installations
• Structural systems designed to resist seismic and wind forces

Frequently Asked Questions

What structural systems is the ATRM5-2 designed to work in?

The ATRM5-2 is designed for use in structural systems that resist seismic and wind forces. It functions as a tension transfer element providing a continuous load path from roof to foundation, and is suited for use in continuous rod tiedown systems for shearwall overturning restraint and uplift restraint systems for roof applications. It can also be used as an adhesive anchor rod.

What are the material and strength specifications for this all-thread rod?

The ATRM5-2 is manufactured from ASTM A36 uncoated black steel and meets Grade 55 specifications, with a minimum yield strength (Fy) of 55 ksi and a minimum tensile strength (Fu) of 75 ksi. The threads conform to UNC Class 2A specifications for compatibility with standard structural hardware.

Is this rod precut or does it require field cutting?

The ATRM5-2 comes precut to 24 in. in length at 5/8 in. diameter, so no field cutting is required for standard applications. This precut format is a convenience feature that supports efficient installation without the need for additional cutting tools or equipment on site.

Is this product made in the United States?

Yes, the Simpson Strong-Tie ATRM5-2 All-Thread Rod is manufactured in the United States.