Simpson SSTB16 Anchor Bolt 5/8 in. x 17-5/8 in. is an engineered anchor bolt built for maximum performance in holdown and Strong-Wall shearwall applications. Backed by extensive load testing across common installation scenarios and code listed by ICC-ES under the 2012, 2015, 2018, and 2021 IBC and IRC, this anchor bolt delivers dependable, verified performance for residential and commercial structural connections. Its precision-engineered design addresses the real-world demands of concrete foundation work, whether in monolithic pours or two-pour construction.

Key Features

• Identification on the bolt head showing embedment angle and model - lets installers quickly confirm the correct bolt orientation and model in the field, reducing the risk of installation errors.
• Offset angle reduces side bursting, and provides more concrete cover - protects the surrounding concrete from stress fractures and improves the long-term structural integrity of the connection.
• Rolled thread for higher tensile capacity - delivers stronger pull-out resistance compared to cut threads, supporting the high-load demands of holdown and shearwall assemblies.
• Stamped embedment line aids installation - gives installers a clear, built-in reference mark for proper embedment depth, helping ensure consistent, code-compliant placement every time.
• Suitable for monolithic and two-pour concrete applications - provides flexibility across a wide range of foundation construction methods without requiring a different anchor bolt for each scenario.
• Made from ASTM F-1554, Grade 36 steel - meets a recognized material standard, giving engineers and inspectors a verified baseline for structural calculations and plan reviews.

Why This Product

• Engineered specifically for holdowns and Strong-Wall shearwalls - unlike general-purpose anchor bolts, the SSTB16 was designed and extensively tested for these exact structural applications, so performance data is directly applicable to your project rather than extrapolated from unrelated use cases.
• ICC-ES code listing across four consecutive code cycles - coverage under the 2012, 2015, 2018, and 2021 IBC and IRC means this anchor bolt supports plan approval and inspection sign-off in jurisdictions operating under any of those currently active code editions.
• Smart installation features built into the bolt itself - the stamped embedment line and head identification reduce reliance on separate layout tools or reference sheets, helping crews work faster and with fewer placement mistakes on the foundation.
• Versatile compatibility with two-pour and monolithic concrete - a single anchor bolt solution that adapts to different pour schedules gives contractors the flexibility to use consistent hardware across varied job site conditions without managing multiple SKUs.

Specifications

• Model Number: SSTB16
• Diameter: 5/8 in.
• Length: 17-5/8 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 concrete pour types is the SSTB16 compatible with?

The SSTB is suitable for both monolithic and two-pour concrete applications, making it versatile for a wide range of residential and commercial construction scenarios.

Are nuts and washers included with the SSTB16?

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

Is the SSTB16 code listed?

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

What is the purpose of the offset angle on the SSTB16?

The offset angle reduces side bursting forces and provides more concrete cover around the bolt, improving both the structural integrity of the installation and long-term performance.

Note: Product dimensions may differ from picture. Please see item description for specifications.