The Simpson Strong-Bolt 2 3/8 in. x 7 in. Mechanically Galvanized Wedge Anchor is a wedge-type expansion anchor engineered for high-load concrete and masonry fastening in exterior environments. Built from mechanically galvanized carbon steel, it features dual undercutting embossments on each clip segment for enhanced grip, and has been tested in uncracked concrete per AC193 and in uncracked masonry per AC01 - making it a dependable choice wherever structural holding strength and corrosion resistance are both required.

Key Features

• Chamfered top designed to prevent mushrooming during installation - protects the anchor head during driving so the fastener seats cleanly and installs without damage every time.
• Dual undercutting embossments on each clip segment - creates a more aggressive mechanical interlock with the base material, delivering reliable holding strength under high-load conditions.
• Suitable for horizontal, vertical, and overhead applications - gives installers the flexibility to use a single anchor type across a wide range of orientations and fastening scenarios.
• Mechanically galvanized carbon steel construction - provides corrosion resistance that makes this anchor appropriate for exterior applications where exposure to the elements is a concern.
• Standard (ANSI) fractional sizes - fits standard fixtures and installs with common drill bit and tool sizes, so no specialty equipment is needed on the job site.
• Tested per ACI355.2 and AC193 - third-party-recognized testing in uncracked concrete and uncracked masonry gives engineers and contractors confidence in documented load performance.

Why This Product

• Exterior-ready corrosion resistance - the mechanically galvanized finish is specifically suited for outdoor and exposed fastening applications, removing the guesswork when specifying anchors for exterior concrete or masonry work.
• Verified performance in multiple base materials - independent testing per AC193 for uncracked concrete and AC01 for uncracked masonry means this wedge anchor meets recognized standards across the most common structural substrates.
• Installs with everyday tools - compatible with a standard 3/8 in. drill bit and a common wrench size, so crews can drive and tighten these anchors without sourcing specialty hardware or slowing down the workflow.
• Engineered for high-load applications in multiple orientations - the dual undercutting clip design combined with approval for horizontal, vertical, and overhead use makes this a versatile, performance-focused fastener for demanding structural and construction tasks.

Specifications

• Size: 3/8 in. x 7 in.
• Manufacturer Part Number (MPN): STB2-37700MGF50
• Brand: Simpson Strong-Tie
• Diameter: 3/8 in.
• Length: 7 in.
• Thread Length: 5-9/16 in.
• Material: Carbon Steel
• Coating / Finish: Mechanically Galvanized
• Installation Drill Bit Size: 3/8 in.
• Wrench Size: 9/16 in.
• Packaging: Packs of 50 and Cartons of 200

Approved Applications

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

Frequently Asked Questions

What size drill bit and wrench are needed to install the STB2-37700MGF50?

This anchor installs with a 3/8 in. drill bit and requires a 9/16 in. wrench size for tightening.

Is this wedge anchor suitable for exterior use?

Yes. The mechanically galvanized carbon steel finish makes this anchor appropriate for exterior applications where corrosion resistance is required.

In what orientations can this anchor be installed?

The Strong-Bolt 2 is suitable for horizontal, vertical, and overhead applications, offering installation flexibility across a wide range of fastening scenarios.

What standards has this anchor been tested to?

This anchor has been tested per ACI355.2 and AC193 for use in uncracked concrete, and per AC01 for use in uncracked masonry.

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