The Simpson Strong-Bolt 2 5/8 in. x 4-1/2 in. Mechanically Galvanized Wedge Anchor is a wedge-type expansion anchor engineered for high-load-resisting anchorage in exterior environments. Built from mechanically galvanized carbon steel, it features dual undercutting embossments on each clip segment - the same proven design found on the zinc-electroplated version - and is tested in uncracked concrete per AC193 and in uncracked masonry per AC01. Whether the application calls for horizontal, vertical, or overhead placement, this anchor delivers dependable holding performance where corrosion resistance and structural reliability matter most.

Key Features

• Chamfered top designed to prevent mushrooming during installation - protects the anchor head and threads so the nut seats cleanly every time, reducing installation errors and rework.
• Dual undercutting embossments on each clip segment - the same proven mechanism as the zinc-electroplated version, maximizing mechanical engagement in the base material for consistent, high-load holding strength.
• Suitable for horizontal, vertical, and overhead applications - provides installation flexibility across a wide range of structural anchoring situations without requiring a different fastener.
• Mechanically galvanized carbon steel construction - delivers enhanced corrosion resistance compared to standard zinc-electroplated anchors, making this fastener well-suited for exterior conditions and exposed environments.
• Standard ANSI fractional sizing at 5/8 in. diameter - fits common fixtures and installs with a standard 5/8 in. drill bit and 15/16 in. wrench, keeping tool requirements simple and accessible on the job site.
• Tested per ACI355.2 and AC193 - third-party testing in uncracked concrete and uncracked masonry gives engineers and contractors verified load data to design and specify with confidence.

Why This Product

• Purpose-built for exterior, high-load anchoring - the mechanically galvanized finish is specifically chosen for applications where exposure to the elements demands more corrosion protection than a standard electroplated anchor can provide, without sacrificing load-carrying capacity.
• Multi-orientation capability in a single anchor - approval for horizontal, vertical, and overhead installations means contractors can stock one anchor for varied structural tasks rather than sourcing separate fasteners for each orientation.
• Proven, independently verified performance - testing per ACI355.2, AC193, and AC01 in both uncracked concrete and uncracked masonry provides the documented performance data that design professionals need for code-compliant structural connections.
• Straightforward installation with common tools - the standard 5/8 in. drill bit requirement and chamfered top that prevents mushrooming translate to a faster, cleaner install with no specialized equipment and less risk of damage during driving.

Specifications

• Model Number: STB2-62412MGF20
• Size: 5/8 in. x 4-1/2 in.
• Drill Bit Diameter: 5/8 in.
• Thread Length: 2-7/16 in.
• 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
• Anchor Type: Wedge-type expansion anchor
• Finish: Mechanically Galvanized
• Packaging: Packs of 20 and Cartons of 80

Approved Applications

• Exterior applications requiring high-load-resisting anchorage
• Uncracked concrete (tested per AC193)
• Uncracked masonry (tested per AC01)
• Horizontal installations
• Vertical installations
• Overhead installations

Frequently Asked Questions

What type of base material is the Strong-Bolt 2 Mechanically Galvanized anchor approved for?

The STB2-62412MGF20 anchor is tested and approved for use in uncracked concrete in accordance with AC193 and in uncracked masonry in accordance with AC01.

What drill bit diameter is required to install this anchor?

A 5/8" diameter drill bit is required, matching the 5/8" anchor diameter for a proper fit.

Why choose the mechanically galvanized version of the Strong-Bolt 2?

The mechanically galvanized finish provides corrosion resistance that makes this anchor suitable for exterior applications where enhanced protection against the elements is needed compared to standard zinc-electroplated versions.

Can this anchor be used in overhead installations?

Yes. The Strong-Bolt 2 Mechanically Galvanized anchor is suitable for horizontal, vertical, and overhead applications.

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