The Simpson Easy-Set Pin-Drive Expansion Anchor is a carbon steel anchor engineered by Simpson for medium- and heavy-duty fastening applications into concrete. Delivering reliable holding power in concrete base materials including concrete masonry unit (CMU) and brick, this pin-drive anchor is built for structural masonry and construction anchoring projects where a secure, lasting connection is essential. A Yellow-Zinc Dichromate Plated finish provides corrosion resistance, and the integrated nut and washer design keeps components together throughout the installation process.

Key Features

• Integrated nut and washer - keeps all components together during transport and installation, reducing the chance of lost parts on the job site
• Pin-drive expansion mechanism - provides a strong connection of elements to concrete through expansion, delivering dependable holding power in medium- and heavy-duty applications
• Compatible with concrete, CMU, and brick - increases overall strength of masonry projects across a range of common base materials, giving installers greater flexibility on site
• Yellow-Zinc Dichromate Plated carbon steel construction - combines structural strength with corrosion-resistant protection for long-term performance in concrete anchoring applications
• Caution - oversized holes reduce performance - using the specified 3/8 in. drill bit is critical, as oversized holes in the base material will make it difficult to set the anchor and will reduce the anchor's load capacity

Why This Product

• Simplified installation by design - the integrated nut and washer eliminate the need to manage loose hardware separately, saving time and reducing frustration during medium- and heavy-duty concrete fastening work
• Versatile base material compatibility - engineered to deliver holding power in concrete, CMU, and brick, this anchor suits a wide range of structural masonry and construction anchoring applications without requiring a different fastener for each substrate
• Trusted Simpson engineering - designed and manufactured by Simpson, a brand recognized for structural connector and fastening solutions, so contractors and builders can specify this anchor with confidence
• Purpose-built for demanding loads - the expansion anchoring mechanism is specifically engineered for medium- and heavy-duty fastening, making it a practical choice when connection strength in concrete base materials is a priority

Specifications

• Brand: Simpson Strong-Tie
• MPN: EZAC37312
• Diameter: 3/8 in.
• Length: 3-1/2 in.
• Thread Length: 1-1/8 in.
• TPI: 16
• Drill Bit Diameter: 3/8 in.
• Min. Fixture Hole: 7/16 in.
• Wrench Size: 9/16 in.
• Material: Carbon Steel
• Coating: Yellow-Zinc Dichromate Plated
• Finish: Yellow-Zinc Dichromate Plated
• Packaging: Packs of 50 and Cartons of 250

Approved Applications

• Medium- and heavy-duty fastening into concrete
• Fastening into concrete masonry unit (CMU)
• Fastening into brick base materials
• Structural masonry and construction anchoring projects

Frequently Asked Questions

What base materials is the Simpson EZAC37312 anchor compatible with?

The EZAC37312 provides holding power in concrete base materials including both concrete masonry unit (CMU) and brick, making it suitable for a range of medium- and heavy-duty masonry fastening applications.

What drill bit size is required to install the EZAC37312 anchor?

A 3/8 in. drill bit diameter is required. The minimum fixture hole size is 7/16 in., and a 9/16 in. wrench is needed to drive the anchor during installation.

Does the EZAC37312 include a nut and washer?

Yes. The anchor includes an integrated nut and washer to help keep track of parts and simplify the installation process.

Why is it important to avoid oversized holes when installing this anchor?

Oversized holes in the base material will make it difficult to set the anchor and will reduce the anchor's load capacity. Always use the specified 3/8 in. drill bit to ensure a properly sized hole for optimal performance.

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