The Simpson Strong-Bolt 2 3/4 in. x 4 3/4 in. Mechanically Galvanized Wedge Anchor is a wedge-type expansion anchor built for high-load-resisting performance in demanding exterior environments. Manufactured by Simpson from carbon steel with a mechanically galvanized finish, this anchor is engineered for reliable, secure fastening in uncracked concrete and uncracked masonry across horizontal, vertical, and overhead applications. With dual undercutting embossments on each clip segment and a chamfered top, it is designed to deliver consistent mechanical engagement and clean installation every time.

Key Features

• Chamfered top on the anchor body - prevents mushrooming during installation, helping maintain thread integrity and reducing installation errors.
• Dual undercutting embossments on each clip segment - create a more secure mechanical interlock with the base material, supporting high-load resistance in structural and architectural anchoring situations.
• Mechanically galvanized carbon steel construction - provides corrosion resistance suited to exterior conditions, making this anchor a dependable choice where moisture and weather exposure are ongoing concerns.
• Suitable for horizontal, vertical, and overhead applications - gives installers flexibility to use a single anchor type across multiple orientations on the same job site.
• Standard ANSI fractional sizing at 3/4 in. diameter - fits standard fixtures and works with common 3/4 in. drill bits and a 1 1/8 in. wrench, so no specialized tooling is required.
• Tested per ACI355.2, AC193, and AC01 - provides documented, code-referenced performance data for use in uncracked concrete and uncracked masonry, supporting engineered and inspected installations with confidence.

Why This Product

• Purpose-built for exterior high-load anchoring - the mechanically galvanized finish combined with wedge-type expansion mechanics means this anchor is specifically designed for applications where both corrosion resistance and load performance are non-negotiable requirements.
• Verified performance across multiple base materials and orientations - independent testing in uncracked concrete per AC193 and uncracked masonry per AC01 means buyers have documented proof of performance, not just manufacturer claims, to support approvals and inspections.
• Installation-friendly design reduces on-site complications - the chamfered top, standard ANSI sizing, and compatibility with common drill bits and wrenches mean crews can work efficiently without special tools or extra preparation steps.
• Dual undercutting clip design supports consistent load transfer - the same embossed clip geometry found on the zinc-electroplated version is carried over to this mechanically galvanized anchor, so buyers get proven mechanical engagement in a finish suited for exterior use.

Specifications

• Model Number: STB2-75434MGF10
• Size: 3/4 in. x 4-3/4 in.
• Drill Bit Diameter: 3/4 in.
• Thread Length: 2-5/8 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
• Finish/Coating: Mechanically Galvanized
• Anchor Type: Wedge-Type Expansion Anchor
• Packaging: Packs of 10 and Cartons of 40

Approved Applications

• Exterior structural and architectural anchoring applications
• Horizontal anchor installations
• Vertical anchor installations
• Overhead anchor installations
• Uncracked concrete (tested per AC193)
• Uncracked masonry (tested per AC01)

Frequently Asked Questions

What type of base material is the Strong-Bolt 2 Wedge Anchor approved for use in?

The STB2-75434MGF10 anchor is tested and approved for use in uncracked concrete in accordance with AC193, as well as in uncracked masonry in accordance with AC01.

What drill bit diameter is required to install this anchor?

A 3/4 in. diameter drill bit is required, which matches the anchor's nominal size for proper installation.

Why is a mechanically galvanized finish specified for this anchor?

The mechanically galvanized finish is applied to the anchor body to provide corrosion resistance, making it suitable for exterior applications where exposure to moisture and the elements is a concern.

Can this anchor be used in overhead installations?

Yes. The Strong-Bolt 2 Wedge Anchor is suitable for horizontal, vertical, and overhead applications, offering flexibility across a wide range of installation orientations.

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