Product Features
Product Description
The Simpson Strong-Tie Strong-Bolt 2 Wedge Anchor (Model STB2-50512F25) is a 1/2 in. x 5-1/2 in. zinc-plated carbon steel wedge-type expansion anchor engineered for high-performance fastening in concrete and masonry. Designed by Simpson Strong-Tie, this anchor delivers reliable load capacity in even the most demanding seismic and high-wind conditions. Dual undercutting embossments on each clip segment enable secondary expansion should a crack form and intersect the anchor location, significantly increasing the anchor's ability to carry load 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, increasing load capacity even when the hole expands
- 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
- MPN: STB2-50512F25
- Brand: Simpson Strong-Tie
- Material: Carbon Steel
- Coating / Finish: Zinc Plated
- Diameter: 1/2 in.
- Length: 5-1/2 in.
- Thread Length: 3-13/16 in.
- Installation Drill Bit: 1/2 in.
- Wrench Size: 3/4 in.
- Packaging: Packs of 25 and Cartons of 100
- Country of Origin: China
Approved Applications
- Cracked concrete
- Uncracked concrete
- Masonry applications
- Horizontal installations
- Vertical installations
- Overhead installations
- Seismic design categories A through F
- High-wind condition environments
- Static loading applications
Frequently Asked Questions
- What makes the Strong-Bolt 2 suitable for seismic conditions?
- The Strong-Bolt 2 is qualified for static and seismic loading conditions covering seismic design categories A through F. Its dual undercutting embossments on each clip segment enable secondary expansion if a crack forms and intersects the anchor location, which significantly increases its 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 both cracked and uncracked concrete, as well as masonry applications. It has been tested per ACI355.2 and AC193 to confirm its performance in these conditions.
- What tools are needed to install the Strong-Bolt 2 wedge anchor?
- Installation requires a 1/2 in. drill bit to create the pilot hole and a 3/4 in. wrench to tighten the anchor. The chamfered top is designed to prevent mushrooming during installation, helping ensure a clean and reliable set.
- Is this anchor appropriate for overhead or horizontal installations?
- Yes. The Strong-Bolt 2 is suitable for horizontal, vertical, and overhead applications, making it a versatile choice for a wide range of structural fastening tasks in concrete and masonry.
Note: Product dimensions and/or thread length may differ from picture. Please see the item description above for specifications.
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