Product Description
The Simpson SSTB20HDG is a hot-dip galvanized anchor bolt engineered by Simpson for maximum performance in holdown and Strong-Wall shearwall applications. Backed by extensive testing to determine design load capacity across many common installations, this anchor bolt meets the demands of both monolithic and two-pour concrete applications. Code listed by ICC-ES under the 2012, 2015, 2018, and 2021 IBC and IRC, it gives contractors and structural engineers confidence that every installation meets current building code requirements. The hot-dip galvanized finish delivers enhanced corrosion resistance, making it a reliable choice for exterior applications and installations involving treated wood.
Key Features
- Identification markings on the bolt head showing embedment angle and model - allows installers to quickly verify the correct bolt and orientation on the jobsite, reducing the risk of installation errors.
- Offset angle design - reduces side bursting forces and provides more concrete cover, improving structural integrity and long-term concrete performance around the anchor.
- Rolled threads - deliver higher tensile capacity compared to cut threads, giving structural connections greater strength under load.
- Stamped embedment line - provides a clear visual guide during placement so the bolt is set at the correct depth every time, speeding up installation and eliminating guesswork.
- Suitable for both monolithic and two-pour concrete applications - gives builders flexibility across different foundation and slab construction methods without needing a different fastener for each scenario.
- Hot-dip galvanized coating - provides extra corrosion resistance beyond standard finishes, making this anchor bolt well suited for exterior environments and treated-wood applications where moisture exposure is a concern. Note that threads should be chased after galvanizing to accept standard nuts or couplers.
- ASTM F-1554, Grade 36 steel construction - meets a recognized material standard, ensuring consistent mechanical properties and compatibility with engineered holdown and shearwall systems.
- ICC-ES code listing under 2012, 2015, 2018, and 2021 IBC and IRC - supports plan approval and inspection sign-off across multiple code cycles, reducing project delays.
Why This Product
- Purpose-built for holdown and shearwall connections - the SSTB anchor bolt is specifically designed and extensively tested for use with holdowns and Simpson Strong-Wall shearwalls, meaning load values are backed by real application data rather than generic bolt ratings.
- Smart installation details reduce field errors - between the stamped embedment line and the bolt head identification markings, installers have built-in guides that keep placement accurate and consistent without relying on additional measuring tools or references.
- Hot-dip galvanized finish extends service life in demanding environments - for projects involving exterior foundations, coastal conditions, or pressure-treated framing, the HDG coating provides a meaningful corrosion resistance advantage over standard finishes, helping the connection maintain performance over time.
- Multi-cycle code listing supports project approval - coverage under the 2012 through 2021 IBC and IRC means this anchor bolt is recognized across a wide range of jurisdictions and code adoption cycles, simplifying the submittal and inspection process for engineers and builders.
Specifications
- Model Number: SSTB20HDG
- Diameter: 5/8 in.
- Length: 21-5/8 in.
- Material: ASTM F-1554, Grade 36
- Coating: Hot-Dip Galvanized
- Finish: Hot-Dip Galvanized
- 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
- Exterior applications requiring enhanced corrosion resistance
- Treated-wood applications requiring enhanced corrosion resistance
Frequently Asked Questions
What applications is the SSTB20HDG anchor bolt designed for?
The SSTB20HDG is designed for maximum performance as an anchor bolt for holdowns and Simpson Strong-Tie Strong-Wall shearwalls. It is suitable for both monolithic and two-pour concrete applications, and extensive testing has been conducted to determine its design load capacity across many common installations.
Why choose the Hot-Dip Galvanized version of the SSTB anchor bolt?
The hot-dip galvanized (HDG) coating provides extra corrosion resistance compared to standard finishes, making the SSTB20HDG well suited for exterior applications and installations involving treated wood, where exposure to moisture or corrosive conditions is a concern.
Are nuts and washers included with the SSTB20HDG, and are there any special threading considerations?
Nuts and washers for holdown attachment are not supplied with the SSTB20HDG. Additionally, because this anchor bolt features a hot-dip galvanized coating, the threads should be chased after galvanization in order to use standard nuts or couplers.
What building codes cover the SSTB20HDG, and what material is it made from?
The Simpson Strong-Tie SSTB anchor bolts are code listed by ICC-ES under the 2012, 2015, 2018, and 2021 IBC and IRC. The SSTB20HDG is manufactured from ASTM F-1554, Grade 36 steel and features a rolled thread for higher tensile capacity.
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