The Simpson Strong-Bolt 2 5/8 in. x 12 in. Mechanically Galvanized Wedge Anchor is a heavy-duty wedge-type expansion anchor built for high-load structural connections in exterior environments. Constructed from mechanically galvanized carbon steel, it delivers dependable holding strength in uncracked concrete and uncracked masonry, and is equally suited for horizontal, vertical, and overhead installations. The same dual undercutting embossments on each clip segment found on the zinc-electroplated version are carried over here, maintaining consistent mechanical performance with the added benefit of corrosion-resistant protection for outdoor use.

Key Features

• Chamfered top - prevents mushrooming during installation, protecting the threads and keeping the anchor properly seated for a clean, reliable set every time.
• Suitable for horizontal, vertical, and overhead applications - gives installers flexibility to use a single anchor type across multiple orientations on the same job without substituting products.
• Standard ANSI fractional sizing - fits standard fixtures and works with common 5/8 in. drill bits and a 15/16 in. wrench, so no specialty tooling is required.
• Mechanically galvanized carbon steel construction - provides the corrosion resistance needed for exterior applications where a zinc-electroplated anchor would be insufficient.
• Tested per ACI355.2, AC193, and AC01 - independently verified performance in both uncracked concrete and uncracked masonry gives engineers and inspectors the documentation they need for code-compliant installations.
• 6 in. thread length on a 12 in. anchor body - delivers sufficient embedment depth for demanding structural loads while accommodating fixture thickness and nut engagement.

Why This Product

• Purpose-built for exterior, high-load anchoring - the mechanically galvanized finish is specifically intended for outdoor conditions, making this wedge anchor a reliable long-term solution where corrosion resistance is a structural requirement, not an afterthought.
• Multi-directional installation without product changes - tested and approved for horizontal, vertical, and overhead use, this anchor simplifies procurement and inventory by covering the full range of orientations a contractor may encounter on a single project.
• Dual-substrate testing provides broader application confidence - with independent testing in both uncracked concrete per AC193 and uncracked masonry per AC01, this anchor is backed by documentation that supports a wider range of base material conditions than single-substrate products.
• Installs with standard tools already on the job - the 5/8 in. drill bit requirement and 15/16 in. wrench size align with common equipment, reducing setup time and eliminating the need for specialty hardware during installation.

Specifications

• Size: 5/8 in. x 12 in.
• Manufacturer Part Number (MPN): STB2-62120MGF10
• Brand: Simpson Strong-Tie
• Material: Carbon Steel
• Coating / Finish: Mechanically Galvanized
• Anchor Body Material: Mechanically Galvanized Carbon Steel
• Nut Material: Carbon Steel ASTM A 563, Grade A
• Washer Material: Carbon Steel ASTM F844
• Clip Material: Carbon Steel ASTM A 568
• Diameter: 5/8 in.
• Length: 12 in.
• Thread Length: 6 in.
• Installation Drill Bit Size: 5/8 in.
• Wrench Size: 15/16 in.
• Standards: Tested per ACI355.2, AC193, and AC01
• Packaging: Packs of 10 and Cartons of 20

Approved Applications

• High-load anchoring in exterior applications requiring corrosion resistance
• Uncracked concrete installations tested per AC193
• Uncracked masonry installations tested per AC01
• Horizontal structural connections
• Vertical structural connections
• Overhead structural connections

Frequently Asked Questions

What size drill bit and wrench are required to install the STB2-62120MGF10?

This anchor installs with a 5/8 in. drill bit and requires a 15/16 in. wrench to tighten the nut during installation.

Is this wedge anchor suitable for outdoor or exterior use?

Yes. The mechanically galvanized finish on this Strong-Bolt 2 anchor is specifically intended for exterior applications where corrosion resistance is required.

What base materials has this anchor been tested and approved for?

The STB2-62120MGF10 has been tested in uncracked concrete in accordance with AC193, and in uncracked masonry in accordance with AC01. It is not rated for cracked concrete applications.

What design features help prevent damage during installation?

The anchor incorporates a chamfered top specifically designed to prevent mushrooming of the anchor body during the driving and setting process, helping to ensure clean, damage-free installation.

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