The Simpson 3/16 in. x 2-1/2 in. Zinc-Plated Mushroom Head Crimp Drive Anchor is an easy-to-install expansion anchor engineered for reliable fastening in concrete and grout-filled block. The pre-formed curvature along the shaft acts as a built-in expansion mechanism, securing the anchor firmly upon installation without any secondary tightening procedure. The low-profile mushroom head delivers a tamper-proof connection suited to a range of structural and overhead tasks, including fastening wood or light-gauge steel, attaching concrete formwork, hanging overhead support for sprinkler pipes, and installing suspended ceiling panels.

Key Features

• Unique curved shaft design - creates a self-contained expansion mechanism that locks the anchor securely in place, reducing the chance of loosening over time
• No secondary tightening required - the pre-formed curvature does the work automatically, cutting installation time and simplifying the fastening process
• Mushroom head style - delivers a tamper-proof fastening solution that resists unauthorized removal, making it well suited for security-sensitive overhead and structural applications
• Zinc-plated carbon steel construction - provides a corrosion-resistant finish that supports durability across typical concrete and masonry installation environments
• Five available head styles across the Crimp Drive line - allows the right anchor configuration to be selected for wood attachment, light-gauge steel fastening, formwork, or suspended ceiling and sprinkler pipe support

Why This Product

• Streamlined installation in concrete and grout-filled block - the self-expanding curved shaft eliminates the extra tightening step that traditional expansion anchors require, saving labor time on the job
• Tamper-proof security built into the head design - the mushroom head is purpose-built for applications where resistance to unauthorized removal matters, such as overhead sprinkler pipe hangers and suspended ceiling systems
• Versatile across multiple fastening applications - a single anchor design handles wood-to-concrete attachment, light-gauge steel fastening, formwork installation, and overhead support, reducing the need to source multiple anchor types
• Trusted Simpson construction with a corrosion-resistant finish - zinc-plated carbon steel delivers the durability expected from Simpson for demanding structural fastening in concrete base materials

Specifications

• MPN: CD18212M
• Brand: Simpson Strong-Tie
• Size: 3/16 in. x 2-1/2 in.
• Head Type: Mushroom Head
• Material: Carbon Steel
• Coating: Zinc Plated
• Finish: Zinc Plated
• Packaging: Packs of 100 and Cartons of 500

Approved Applications

• Fastening wood or light-gauge steel to concrete and grout-filled block
• Attaching concrete formwork
• Hanging overhead support for sprinkler pipes
• Installing suspended ceiling panels
• Tamper-proof anchoring where a low-profile mushroom head is required

Frequently Asked Questions

What base materials is the Simpson CD18212M Crimp Drive anchor designed for?

The CD18212M is designed for use in concrete and grout-filled block, making it suitable for a wide variety of structural fastening applications in these base materials.

Does the Crimp Drive anchor require a secondary tightening step after installation?

No. The pre-formed curvature along the shaft acts as the expansion mechanism, securing the anchor in place upon installation and eliminating the need for any secondary tightening procedure.

Why does the CD18212M feature a mushroom head style?

The mushroom head provides a tamper-proof solution, making it ideal for applications where security and resistance to unauthorized removal are important considerations.

What material and finish is the Simpson CD18212M anchor made from?

The CD18212M is constructed from carbon steel with a zinc-plated finish, which provides a layer of corrosion resistance for added durability in typical installation environments.

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