The Simpson Easy-Set 3/8 in. x 4-3/4 in. Pin-Drive Expansion Anchor from Simpson is built for medium- and heavy-duty fastening applications into concrete, delivering reliable expansion-based holding power across a range of masonry base materials including concrete masonry unit (CMU) and brick. Made from carbon steel with a yellow-zinc dichromate plated finish, this pin-drive anchor features an integrated nut and washer that simplifies installation and keeps components organized from start to finish.

Key Features

• Integrated nut and washer - keeps all components together in one assembly, reducing the risk of lost parts and speeding up installation on the job.
• Expansion-based holding mechanism - provides a strong, secure connection of elements to concrete by expanding within the base material, ensuring dependable load transfer.
• Compatible with concrete, CMU, and brick - versatile base material compatibility makes this anchor a practical choice for a wide variety of masonry fastening applications.
• Carbon steel construction with yellow-zinc dichromate plating - delivers structural durability while the corrosion-resistant finish helps protect the anchor in demanding installation environments.
• Precise 3/8 in. drill bit requirement - matching the anchor diameter exactly to the drill bit size ensures a proper fit and maximum load capacity, with a 9/16 in. wrench needed for final tightening.
• Caution - oversized holes reduce performance - drilling to the exact specified diameter 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, all-in-one installation - the integrated nut and washer design means fewer loose components to manage, making this expansion anchor well-suited for high-volume or time-sensitive concrete fastening work.
• Engineered for demanding masonry applications - rated for medium- and heavy-duty use in concrete, CMU, and brick, this pin-drive anchor is built to handle the structural loads common in serious masonry projects.
• Trusted Simpson engineering - backed by Simpson's reputation in structural fastening, the Easy-Set anchor is designed to increase the overall strength of masonry connections through reliable mechanical expansion.
• Protective finish for long-term performance - the yellow-zinc dichromate plated carbon steel construction provides a layer of corrosion resistance, helping maintain anchor integrity after installation in concrete base materials.

Specifications

• Brand: Simpson Strong-Tie
• MPN: EZAC37434
• Diameter: 3/8 in.
• Length: 4-3/4 in.
• Thread Length: 1-1/2 in.
• 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 200

Approved Applications

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

Frequently Asked Questions

What base materials is the EZAC37434 anchor compatible with?

The EZAC easy-set anchor provides holding power in concrete base materials including both concrete masonry unit (CMU) and brick, making it suitable for a wide range of masonry fastening applications.

What drill bit size should be used to install this anchor?

A 3/8 in. drill bit should be used to prepare the hole for the EZAC37434 anchor. The minimum fixture hole required is 7/16 in., and a 9/16 in. wrench is needed for final tightening.

Does the EZAC37434 come with the nut and washer already attached?

Yes. The EZAC easy-set anchor includes an integrated nut and washer, which helps keep all components together and simplifies the installation process.

What happens if the hole drilled in the base material is too large?

Oversized holes in the base material will make it difficult to set the anchor and will reduce the anchor's load capacity. It is important to drill precisely to the specified 3/8 in. diameter to ensure optimal performance and holding strength.

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