Product Features
Product Description
Simpson STB2-37312F50 Strong-Bolt 2 - 3/8 in. x 3-1/2 in. Wedge Anchor, Zinc Plated is a heavy-duty wedge-type expansion anchor engineered by Simpson Strong-Tie for high-performance concrete fastening in the most demanding conditions, including seismic 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 the anchor's ability to carry load if the hole expands - making the Strong-Bolt 2 a trusted solution for both cracked and uncracked concrete applications.
Key Features
- 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
- Tested per ACI355.2 and AC193
- Dual undercutting embossments on each clip segment enable secondary expansion should a crack form and intersect the anchor location
- Made from zinc-plated carbon steel
- Installs with 3/8 in. drill bit and 9/16 in. wrench size
Specifications
- MPN: STB2-37312F50
- Brand: Simpson Strong-Tie
- Diameter: 3/8 in.
- Length: 3-1/2 in.
- Thread Length: 2-1/16 in.
- Material: Carbon Steel
- Coating: Zinc Plated
- Finish: Zinc Plated
- Installation Drill Bit: 3/8 in.
- Wrench Size: 9/16 in.
- Packaging: Packs of 50 and Cartons of 250
- Country of Origin: China
Approved Applications
- Cracked and uncracked concrete fastening
- Masonry applications
- Horizontal installations
- Vertical installations
- Overhead installations
- Seismic design categories A through F
- High-wind structural connections
Frequently Asked Questions
- What size drill bit and wrench are required to install the Strong-Bolt 2?
- The Strong-Bolt 2 STB2-37312F50 installs with a 3/8 in. drill bit and requires a 9/16 in. wrench size for proper installation.
- Is the Strong-Bolt 2 rated for seismic conditions?
- Yes. The Strong-Bolt 2 is qualified for static and seismic loading conditions, covering seismic design categories A through F, making it suitable for use in the most demanding seismic and high-wind environments.
- Can this wedge anchor be used in cracked concrete?
- Yes. The Strong-Bolt 2 features dual undercutting embossments on each clip segment that enable secondary expansion should a crack form and intersect the anchor location. This significantly increases the ability of the Strong-Bolt 2 to carry load if the hole expands, making it suitable for both cracked and uncracked concrete applications.
- What other material options are available for the Strong-Bolt 2?
- In addition to the zinc-plated carbon steel version, the Strong-Bolt 2 is available in mechanically galvanized carbon steel, Type 304 stainless steel, and Type 316 stainless steel to suit various environmental and corrosion-resistance requirements.
Note: Product dimensions and/or thread length may differ from picture. Please see the item description above for specifications.
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