The Simpson 3/16 in. x 4 in. Countersunk Head Crimp Drive Anchor is an expansion anchor engineered by Simpson for reliable fastening in concrete and grout-filled block. The preformed curvature along the shaft acts as a built-in expansion mechanism, securing the anchor firmly upon installation and eliminating the need for any secondary tightening procedure. The countersunk head style delivers a zero-profile finish, making this anchor well suited for applications where a flush, unobstructed surface is required - from fastening wood or light-gauge steel to concrete, attaching concrete formwork, and providing overhead support for sprinkler pipes or suspended ceiling panels.

Key Features

• Unique curved shaft design - the preformed curvature expands against the base material when driven, providing secure placement in concrete and grout-filled block without additional tools or steps.
• No secondary tightening required - the built-in expansion mechanism speeds up anchor installation, reducing labor time on the job site.
• Countersunk head style - sits flush with or below the fixture surface, delivering a zero-profile solution for applications where a smooth, unobstructed finish matters.
• Zinc-plated carbon steel construction - the zinc plating provides a protective coating over the carbon steel body, adding corrosion resistance in typical interior masonry environments.
• 3/16 in. x 4 in. sizing - matched to a 3/16 in. drill bit diameter, keeping the installation process straightforward and consistent.

Why This Product

• Faster installation with no tightening step - the self-expanding curved shaft eliminates the secondary tightening procedure that traditional expansion anchors require, helping crews complete masonry fastening tasks more efficiently.
• Versatile across multiple masonry applications - approved for fastening wood, light-gauge steel, and concrete formwork, as well as hanging overhead support for sprinkler pipes and suspended ceiling panels, making this a single anchor solution across a wide range of job site needs.
• Flush finish without additional hardware - the countersunk head sits at or below the surface level once installed, removing the need for countersinking modifications or cover caps where a clean surface appearance is required.
• Trusted Simpson engineering in a standard drive anchor - the Crimp Drive design reflects the same structural fastening focus Simpson brings to concrete and masonry anchor solutions, giving contractors confidence in a product built for real-world installation demands.

Specifications

• MPN: CD18400C
• Brand: Simpson Strong-Tie
• Size: 3/16 in. x 4 in.
• Head Type: Countersunk Head
• Material: Carbon Steel
• Coating: Zinc Plated
• Finish: Zinc Plated
• Packaging: Packs of 100 and Cartons of 500

Approved Applications

• Fastening wood to concrete and grout-filled block
• Fastening light-gauge steel to concrete and grout-filled block
• Attaching concrete formwork
• Hanging overhead support for sprinkler pipes
• Supporting suspended ceiling panels

Frequently Asked Questions

What base materials is the Simpson Strong-Tie Crimp Drive anchor designed for?

The Crimp Drive anchor is designed for use in concrete and grout-filled block, making it suitable for a wide range of structural and mechanical fastening tasks in masonry construction.

Why does the Crimp Drive anchor not require a secondary tightening procedure?

The anchor features a preformed curvature along its shaft that acts as a built-in expansion mechanism. When driven into the hole, this curved shaft expands against the base material, securing the anchor firmly in place without any additional tightening steps.

What is the advantage of the countersunk head style on the CD18400C?

The countersunk head provides a zero-profile solution, meaning the head sits flush with or below the surface of the fixture material once installed. This is ideal for applications where a smooth, unobstructed surface finish is required.

What material and protective coating does the CD18400C anchor use?

The CD18400C is constructed from carbon steel and features a zinc-plated finish, which provides a layer of corrosion resistance for general-purpose interior anchoring applications in concrete and grout-filled block.

Note: Product dimensions may differ from picture. Please see the item description above for specifications.