Product Description
Simpson SSTB20L Anchor Bolt 5/8 in x 24-5/8 in is engineered by Simpson 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, and the SSTB anchor bolt series is code listed by ICC-ES under the 2012, 2015, 2018 and 2021 IBC and IRC - giving builders and engineers confidence in every installation.
Key Features
- Identification on the bolt head showing embedment angle and model - makes it easy to verify correct placement and orientation during inspection, reducing installation errors on the jobsite.
- Offset angle reduces side bursting and provides more concrete cover - helps protect structural integrity by minimizing stress concentrations in the surrounding concrete.
- Rolled thread for higher tensile capacity - delivers greater strength under load compared to cut threads, supporting the demanding performance requirements of holdown and shearwall applications.
- Stamped embedment line aids installation - provides a clear, built-in reference mark so crews can set the bolt to the correct depth quickly and accurately without extra measuring.
- Suitable for monolithic and two-pour concrete applications - offers installation flexibility across a wide range of foundation and slab configurations, so one bolt works in more job conditions.
- ASTM F-1554, Grade 36 uncoated steel construction - meets a recognized material standard, ensuring consistent mechanical properties and reliable performance in structural connections.
Why This Product
- Purpose-built for holdowns and Strong-Wall shearwalls - unlike general-purpose anchor bolts, the SSTB is specifically designed and extensively tested for these critical lateral-force-resisting connections, so the design load capacity is well-established for common applications.
- ICC-ES code listing across four building code cycles - acceptance under the 2012, 2015, 2018 and 2021 IBC and IRC means this anchor bolt meets current compliance requirements without requiring additional engineering justification for listed applications.
- Installer-friendly features built into the bolt itself - the stamped embedment line, head identification markings, and offset angle work together to reduce guesswork on the slab, helping crews place the bolt correctly the first time and maintain adequate concrete cover.
- Rolled threads provide a tensile strength advantage - for shearwall and holdown assemblies where uplift loads are a primary concern, the rolled thread construction adds a meaningful margin of strength directly where it counts.
Specifications
- Model Number: SSTB20L
- Diameter: 5/8 in.
- Length: 24-5/8 in.
- Thread Length: 6-1/2 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 applications
- Two-pour concrete applications
Note: Product dimensions may differ from picture. Please see item description for specifications.
Frequently Asked Questions
What is the SSTB20L 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 SSTB20L 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.
Are nuts and washers included with the SSTB20L?
Nuts and washers for holdown attachment are not supplied with the SSTB; install standard nuts, couplers and/or washers as required.
What concrete pour types is the SSTB20L compatible with?
The SSTB is suitable for both monolithic and two-pour concrete applications, offering flexibility across a wide range of installation scenarios.
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