The Simpson Strong-Bolt 2 Wedge Anchor, 3/4" x 6-1/4", 316 Stainless Steel is a heavy-duty wedge-type expansion anchor engineered by Simpson Strong-Tie for demanding concrete fastening applications. Constructed entirely from Type 316 stainless steel - including the anchor body, nut, washer, and clip - this anchor delivers exceptional, long-lasting corrosion resistance across a wide variety of service environments. Whether the installation calls for cracked or uncracked concrete, seismic zone compliance, or high-wind performance, this wedge anchor is a dependable solution for structural and non-structural concrete fastening projects where reliability and code compliance are non-negotiable.

Key Features

• Full Type 316 stainless steel construction throughout - anchor body, nut, washer, and clip - means every component resists corrosion equally, eliminating weak points that could compromise long-term performance in moisture-prone or chemically aggressive environments.
• Code listed for both cracked and uncracked concrete applications - gives installers and engineers the flexibility to use a single anchor solution across a broader range of structural conditions without sourcing separate products.
• Wedge-type expansion anchor design - provides high-load mechanical engagement in concrete, making it suitable for heavy-duty fastening where dependable holding strength is required.
• Approved for seismic zone and high-wind condition installations - means the anchor meets the elevated performance standards required in regions subject to dynamic or extreme lateral loading, supporting code-compliant construction in challenging locations.
• Dual undercutting embossments on the clip segments - enhance mechanical interlock within the concrete, contributing to consistent and reliable load performance during expansion.

Why This Product

• Built for corrosive and demanding environments - Type 316 stainless steel offers enhanced corrosion resistance compared to standard carbon steel and Type 304 stainless, making this anchor a sound long-term investment for outdoor, coastal, moisture-prone, or chemically exposed installations.
• Versatile code-listed performance - approval for both cracked and uncracked concrete, seismic zones, and high-wind conditions means this single anchor covers a wide range of project requirements, reducing the need for multiple SKUs across different job sites.
• Consistent material integrity throughout - because the nut, washer, and clip are all Type 316 stainless steel - not just the anchor body - there is no mixed-metal corrosion risk that could undermine the connection over time.
• Engineered by a trusted name in structural connectors - Simpson Strong-Tie brings deep engineering expertise to this wedge anchor design, giving contractors and specifiers confidence in a product designed to perform in real-world conditions where anchor failure is not an option.

Specifications

• Model Number: STB2-75614S6F10
• Coating/Material: Type 316 Stainless Steel
• Size: 3/4 in. x 6-1/4 in.
• Drill Bit Diameter: 3/4 in.
• Thread Length: 3-15/16 in.
• Anchor Body Material: Type 316 Stainless Steel
• Nut Material: Type 316 Stainless Steel
• Washer Material: Type 316 Stainless Steel
• Clip Material: Type 316 Stainless Steel
• Anchor Type: Wedge-Type Expansion Anchor
• Packaging: Packs of 10 and Cartons of 40

Approved Applications

• Cracked concrete installations
• Uncracked concrete installations
• Seismic zone applications requiring code-listed anchoring solutions
• High-wind condition installations
• Corrosive or moisture-prone environments where long-term performance is critical

Frequently Asked Questions

Is the Strong-Bolt 2 STB2-75614S6F10 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 broad range of structural and non-structural concrete fastening projects.

Why does this anchor use Type 316 stainless steel instead of standard carbon steel or Type 304 stainless?

Type 316 stainless steel offers enhanced corrosion resistance compared to standard carbon steel and Type 304 stainless, making it well-suited for wide variety of service environments - particularly those involving moisture, chemicals, or other corrosive conditions where long-lasting performance is required.

What is the purpose of the dual undercutting embossments on the clip segments?

The dual undercutting embossments on each clip segment enable secondary expansion should a crack form and intersect the anchor location. This feature significantly increases the ability of the Strong-Bolt 2 to carry load if the hole expands, providing an added measure of structural reliability in cracked concrete scenarios.

What drill bit diameter is required to install the STB2-75614S6F10?

Installation of this 3/4" x 6-1/4" Strong-Bolt 2 anchor requires a 3/4" diameter drill bit to prepare the hole in the concrete substrate.

Note: Product dimensions and/or thread length may differ from picture. Please see the item description above for specifications.