Product Features
Product Description
The Simpson Strong-Tie Strong-Bolt 2 Wedge Anchor (1/2 in. x 3-3/4 in., Zinc-Plated Carbon Steel) - model STB2-50334F25 - is a high-performance wedge-type expansion anchor engineered for demanding structural and seismic applications. Designed by Simpson Strong-Tie, this anchor delivers reliable holding strength in both cracked and uncracked concrete as well as masonry, making it a trusted choice for contractors and engineers working in seismic design categories A through F and high-wind environments. Dual undercutting embossments on each clip segment enable secondary expansion should a crack form and intersect the anchor location, significantly increasing load-carrying capability if the hole expands.
Key Features
- Code listed for cracked and uncracked concrete, and masonry applications
- Chamfered top designed to prevent mushrooming during installation
- Qualified for static and seismic loading conditions (seismic design categories A through F)
- Suitable for horizontal, vertical and overhead applications
- Dual undercutting embossments on each clip segment enable secondary expansion if a crack intersects the anchor location, significantly increasing load-carrying capacity
- Tested per ACI355.2 and AC193
- Made from zinc-plated carbon steel
- Installs with 1/2 in. drill bit and 3/4 in. wrench size
Specifications
- Model Number: STB2-50334F25
- Diameter: 1/2 in.
- Length: 3-3/4 in.
- Thread Length: 2-1/16 in.
- Material: Carbon Steel
- Coating/Finish: Zinc Plated
- Required Drill Bit Diameter: 1/2 in.
- Required Wrench Size: 3/4 in.
- Packaging: Packs of 25 and Cartons of 125
- Country of Origin: China
Approved Applications
- Cracked concrete
- Uncracked concrete
- Masonry
- Horizontal installations
- Vertical installations
- Overhead installations
- Seismic and high-wind structural connections (seismic design categories A through F)
- Static loading conditions
Frequently Asked Questions
- What makes the Strong-Bolt 2 suitable for seismic applications?
- The Strong-Bolt 2 is qualified for static and seismic loading conditions across seismic design categories A through F. Its dual undercutting embossments on each clip segment enable secondary expansion should a crack form and intersect the anchor location, which significantly increases the anchor's ability to carry load even if the hole expands - a critical performance advantage in seismic and high-wind environments.
- Can this anchor be used in cracked concrete?
- Yes. The Strong-Bolt 2 is code listed for use in both cracked and uncracked concrete, as well as masonry applications. It has been tested per ACI355.2 and AC193 to confirm performance in these conditions.
- What tools are needed to install this wedge anchor?
- Installation requires a 1/2 in. drill bit to prepare the hole and a 3/4 in. wrench to tighten the anchor. The chamfered top is specifically designed to prevent mushrooming of the bolt head during the installation process.
- Is this anchor approved for overhead and horizontal installations?
- Yes. The Strong-Bolt 2 is suitable for horizontal, vertical, and overhead applications, providing flexibility across a wide range of structural fastening scenarios.
Note: Product dimensions and/or thread length may differ from picture. Please refer to the item description above for specifications.
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