Product Features
Product Description
The Simpson Strong-Bolt 2 Wedge Anchor in 1/2" x 4-1/4" (Model No. STB2-504144SS) is a premium, fully stainless steel expansion anchor engineered for demanding structural fastening applications in concrete. Manufactured by Simpson Strong-Tie, this anchor is constructed entirely from Type 304 Stainless Steel - including the anchor body, nut, and washer - delivering exceptional, long-lasting corrosion resistance across a wide variety of service environments. Code listed for both cracked and uncracked concrete, the Strong-Bolt 2 is an optimal choice for high-performance fastening even under seismic and high-wind conditions.
Key Features
- Full Type 304 Stainless Steel construction (anchor body, nut, and washer) for superior, long-lasting corrosion resistance in demanding service environments
- Clip component made from Type 304 or Type 316 Stainless Steel for added durability
- Code listed for both cracked and uncracked concrete applications
- Engineered for high-performance fastening in seismic and high-wind conditions
- Dual undercutting embossments on each clip segment enable secondary expansion if a crack forms and intersects the anchor location
- Secondary expansion feature significantly increases the ability of the Strong-Bolt 2 to carry load if the hole expands
- Wedge-type expansion anchor design for reliable, consistent holding strength
- 1/2" drill bit diameter required for installation - matches anchor size for a precision fit
Specifications
- Model Number: STB2-504144SS
- Size: 1/2 x 4-1/4 in.
- Drill Bit Diameter: 1/2 in.
- Thread Length: 2 4/7 in.
- Anchor Body Material: Type 304 Stainless Steel
- Nut Material: Type 304 Stainless Steel
- Washer Material: Type 304 Stainless Steel
- Clip Material: Type 304 or Type 316 Stainless Steel
- Anchor Type: Wedge-type expansion anchor
- Brand: Simpson Strong-Tie
- Packaging: Packs of 25 and Cartons of 100
Approved Applications
- Cracked concrete structural fastening applications
- Uncracked concrete structural fastening applications
- Seismic zone installations requiring code-listed anchoring solutions
- High-wind condition applications requiring reliable load performance
- Service environments where long-lasting corrosion resistance is required
Frequently Asked Questions
- Is the Strong-Bolt 2 (STB2-504144SS) approved for use in cracked concrete?
- Yes. The Strong-Bolt 2 wedge anchor is code listed for both cracked and uncracked concrete applications, making it suitable for a wide range of structural fastening scenarios.
- What makes this anchor suitable for seismic and high-wind conditions?
- The Strong-Bolt 2 is specifically engineered and code listed for high-performance fastening in seismic and high-wind conditions. Its dual undercutting embossments on each clip segment allow for secondary expansion if a crack forms and intersects the anchor location, significantly increasing its ability to carry load even if the hole expands.
- What drill bit size is required to install the STB2-504144SS?
- Installation of this anchor requires a 1/2-inch diameter drill bit, which matches the anchor's nominal size for a precise, reliable fit in the concrete substrate.
- Why is stainless steel used for all components of this anchor?
- All primary components - including the anchor body, nut, and washer - are made from Type 304 Stainless Steel, and the clip is made from Type 304 or Type 316 Stainless Steel. This all-stainless construction provides long-lasting corrosion resistance, making the anchor well suited for a wide variety of service environments where standard carbon steel fasteners may be susceptible to deterioration.
Note: Product dimensions and/or thread length may differ from picture. Please see the item description above for specifications.
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