The Simpson Strong-Bolt 2 5/8 in. x 7 in. Wedge Anchor in zinc plated carbon steel is a wedge-type expansion anchor engineered for high-performance structural connections in cracked and uncracked concrete as well as masonry. Built to perform reliably under static, seismic, and high-wind loading conditions, this anchor features dual undercutting embossments on each clip segment that enable secondary expansion should a crack form and intersect the anchor location - significantly increasing its ability to carry load if the hole expands. Suitable for horizontal, vertical, and overhead installations, it is tested per ACI355.2 and AC193 and qualified for seismic design categories A through F, making it a dependable choice for a wide range of structural and construction applications.

Key Features

• Code listed for cracked and uncracked concrete, and masonry applications - gives contractors and engineers confidence that the anchor meets recognized code requirements across a broad range of base materials.
• Dual undercutting embossments on each clip segment enable secondary expansion - if a crack forms and intersects the anchor location, the secondary expansion mechanism helps maintain load-carrying capacity, reducing the risk of anchor failure in compromised concrete.
• Qualified for static and seismic loading conditions (seismic design categories A through F) - covers the full range of seismic design categories, making this anchor appropriate for use in virtually any seismic zone in addition to high-wind condition installations.
• Chamfered top designed to prevent mushrooming during installation - helps ensure clean, consistent installation and reduces the chance of damage that could compromise anchor integrity or slow the fastening process.
• Suitable for horizontal, vertical, and overhead applications - provides installation flexibility across multiple orientations, reducing the need to source different anchors for different site conditions.
• Tested per ACI355.2 and AC193 - independent testing to these industry standards verifies the anchor's performance data, supporting accurate load calculations and engineering sign-off.
• Installs with a 5/8 in. drill bit and 15/16 in. wrench - straightforward tooling requirements mean crews can get to work quickly without specialized equipment.
• Zinc plated carbon steel construction - provides a corrosion-resistant surface finish suited for standard interior and protected structural applications.

Why This Product

• Built for demanding seismic and high-wind environments - the Strong-Bolt 2 is specifically engineered and code listed for seismic design categories A through F, as well as high-wind condition installations, making it one of the more broadly qualified wedge anchors available for critical structural work.
• Secondary expansion protects load capacity when concrete cracks - the dual undercutting embossments on each clip segment activate if a crack intersects the anchor, helping the fastener hold its rated load even as site conditions change - a meaningful advantage over anchors without this feature.
• Versatile enough to reduce job-site complexity - approval for cracked concrete, uncracked concrete, and masonry applications, combined with suitability for horizontal, vertical, and overhead orientations, means this single anchor can address multiple connection points on a project without substitution.
• Backed by rigorous independent testing - compliance with ACI355.2 and AC193 testing protocols gives engineers and inspectors the documented performance data they need to specify and approve the anchor with confidence.

Specifications

• Model Number: STB2-62700F20
• Size: 5/8 in. x 7 in.
• Coating/Material: Zinc Plated / Carbon Steel
• Drill Bit Diameter: 5/8 in.
• Thread Length: 4-15/16 in.
• Anchor Body Material: Carbon Steel
• Nut Material: Carbon Steel ASTM A 563, Grade A
• Washer Material: Carbon Steel ASTM F844
• Clip Material: Carbon Steel ASTM A 568
• Packaging: Packs of 20 and Cartons of 80

Approved Applications

• Cracked concrete applications
• Uncracked concrete applications
• Masonry applications
• Seismic construction applications
• High-wind condition installations

Frequently Asked Questions

Is the Strong-Bolt 2 suitable for use in cracked concrete?

Yes. The Strong-Bolt 2 is code listed for both cracked and uncracked concrete, as well as masonry applications. Its dual undercutting embossments on each clip segment enable secondary expansion should a crack form and intersect the anchor location, significantly increasing its ability to carry load if the hole expands.

What drill bit diameter is required to install the STB2-62700F20?

A 5/8 in. diameter drill bit is required for installation of this anchor.

What materials are used in the construction of this anchor?

The anchor body is made from carbon steel with a zinc plated finish. The nut is carbon steel conforming to ASTM A 563, Grade A; the washer is carbon steel conforming to ASTM F844; and the clip is carbon steel conforming to ASTM A 568.

Can this anchor be used in seismic and high-wind applications?

Yes. The Strong-Bolt 2 wedge anchor is specifically noted as an optimal choice for high-performance installations in seismic and high-wind conditions, and it is code listed for these demanding environments.

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