The Simpson SSTB24 5/8 in. x 25 5/8 in. Anchor Bolt is a Simpson engineered structural anchor bolt built for maximum performance in holdown and Strong-Wall shearwall anchoring applications. Backed by extensive load-capacity testing and code listed by ICC-ES under the 2012, 2015, 2018, and 2021 IBC and IRC, the SSTB delivers dependable performance in both monolithic and two-pour concrete installations, making it a trusted choice for residential and light commercial structural connections.

Key Features

• Identification on the bolt head showing embedment angle and model - lets installers quickly confirm the correct bolt is in place, reducing the risk of on-site errors before the concrete is poured.
• Offset angle design - reduces side bursting forces and provides more concrete cover around the bolt, improving the integrity of the surrounding concrete and overall connection reliability.
• Rolled thread construction - produces higher tensile capacity compared to cut threads, so the bolt can handle demanding structural loads at holdown and shearwall connections.
• Stamped embedment line - gives installers a clear, built-in depth reference during placement, helping ensure proper embedment every time without additional measuring.
• Suitable for monolithic and two-pour concrete applications - provides flexibility across a wide range of foundation and slab conditions, fitting both new pours and staged construction schedules.
• ASTM F-1554, Grade 36 steel - meets a recognized material standard, giving engineers and inspectors confidence in the bolt's mechanical properties for structural calculations.

Why This Product

• Engineered and tested for holdown and shearwall duty - Simpson conducted extensive testing specifically to determine design load capacity in common holdown and Strong-Wall shearwall applications, so you are working with verified performance data rather than general-purpose hardware.
• Built-in installation aids save time and reduce errors - the stamped embedment line and bolt-head identification work together to guide correct placement and depth in the field, cutting down on costly mistakes before the concrete sets.
• Code compliance is already documented - ICC-ES listing under the 2012, 2015, 2018, and 2021 IBC and IRC means inspectors and engineers have a clear approval path, streamlining plan review and inspection on the job site.
• Offset angle protects the surrounding concrete - by reducing side bursting forces and increasing cover, the offset angle design helps preserve the strength of the concrete at the connection point, supporting long-term structural performance.

Specifications

• Model Number: SSTB24
• Diameter: 5/8 in.
• Length: 25-5/8 in.
• Thread Length: 3-1/2 in.
• Material: ASTM F-1554, Grade 36
• Finish: Uncoated Steel
• Coating: None
• Country of Origin: United States

Approved Applications

• Anchor bolt for holdowns
• Anchor bolt for Simpson Strong-Tie Strong-Wall shearwalls
• Monolithic concrete pours
• Two-pour concrete applications

Frequently Asked Questions

What is the SSTB24 anchor bolt designed for?

The SSTB anchor bolt is designed for maximum performance as an anchor bolt for holdowns and Simpson Strong-Tie Strong-Wall shearwalls. Extensive testing has been done to determine the design load capacity of the SSTB when installed in many common applications.

Is the SSTB24 code listed or approved for use under current building codes?

Yes. The Simpson Strong-Tie SSTB anchor bolts are code listed by ICC-ES under the 2012, 2015, 2018, and 2021 IBC and IRC.

Can the SSTB24 be used in both monolithic and two-pour concrete installations?

Yes. The SSTB is suitable for monolithic and two-pour concrete applications, providing flexibility across a variety of job site conditions.

Do nuts and washers come included with the SSTB24?

No. Nuts and washers for holdown attachment are not supplied with the SSTB; install standard nuts, couplers and/or washers as required.

Note: Product dimensions may differ from picture. Please refer to the item description for specifications.