The Simpson 3/16 in. x 3 in. Mushroom Head Crimp Drive Anchor is a zinc-plated carbon-steel expansion anchor from Simpson built for fast, dependable installation in concrete and grout-filled block. Its preformed curvature along the shaft creates a self-contained expansion mechanism that locks the anchor securely in place upon installation, with no secondary tightening procedure required - saving time and reducing labor on the job site. The mushroom head profile resists removal with standard tools, making it a practical choice for tamper-resistant fastening in structural and non-structural masonry applications.

Key Features

• Unique curved shaft design - the preformed curvature acts as the expansion mechanism, creating a secure hold in concrete and grout-filled block without the extra steps conventional anchors require
• No secondary tightening needed - the anchor locks in place upon installation, speeding up the process and reducing overall labor time on the job
• Mushroom head profile - resists removal with standard tools once set, providing a tamper-proof solution for applications where permanent, secure fastening is a priority
• Zinc-plated carbon-steel construction - delivers corrosion resistance and durability suited to demanding masonry anchoring tasks
• 3/16 in. x 3 in. sizing - sized for a range of common anchoring tasks including fastening wood or light-gauge steel, attaching concrete formwork, and supporting overhead installations such as sprinkler pipes and suspended ceiling panels

Why This Product

• Installation efficiency built into the design - because the curved shaft eliminates the need for a secondary tightening step, crews can drive and move on, making this crimp drive anchor a time-saving choice for repetitive anchoring work in masonry
• Versatile across multiple fastening applications - from attaching concrete formwork to hanging overhead support for sprinkler systems and suspended ceiling panels, one anchor style handles a wide variety of structural and non-structural tasks
• Tamper-resistant by design - the mushroom head is not simply a cosmetic choice; it actively resists standard tool removal, making these expansion anchors well suited for security-conscious or permanent installations
• Trusted Simpson engineering - backed by the same design rigor applied across the Simpson line of anchoring solutions, this crimp drive anchor is engineered specifically for concrete and grout-filled block to deliver consistent, reliable holding performance

Specifications

• MPN: CD18300M
• Brand: Simpson Strong-Tie
• Size: 3/16 in. x 3 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-resistant anchoring where a low-profile mushroom head is required

Frequently Asked Questions

What makes the Crimp Drive anchor different from a standard expansion anchor?

The Crimp Drive anchor features a preformed curvature along the shaft that acts as the expansion mechanism. This unique curved shaft design secures the anchor in place upon installation, completely eliminating the need for a secondary tightening procedure that is typically required with conventional expansion anchors.

What base materials is the CD18300M designed to be used in?

The Simpson Strong-Tie CD18300M Crimp Drive anchor is designed for use in concrete and grout-filled block, making it suitable for a wide range of structural and non-structural anchoring tasks in masonry construction.

Why does the mushroom head style offer a tamper-proof advantage?

The mushroom head profile of the CD18300M resists removal with standard tools once installed, providing a tamper-proof solution that is especially valuable in applications where security and permanent fastening are a priority.

What is the anchor made of, and how is it protected against corrosion?

The CD18300M anchor is constructed from carbon steel and finished with a zinc plating, which provides a layer of corrosion resistance suitable for typical indoor and protected anchoring applications in concrete and grout-filled block.

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