The Simpson 1/4 in. x 3 in. Zinc-Plated Mushroom Head Crimp Drive Anchor is an easy-to-install expansion anchor engineered for use in concrete and grout-filled block. The preformed curvature along the shaft creates an expansion mechanism that secures the anchor in place automatically, eliminating the need for a secondary tightening procedure. Built from carbon steel with a zinc-plated finish, this anchor handles a broad range of fastening tasks - from attaching wood or light-gauge steel to concrete, to hanging overhead support for sprinkler pipes and installing suspended ceiling panels.

Key Features

• Unique curved shaft design - the preformed curvature acts as a built-in expansion mechanism, locking the anchor securely into concrete or grout-filled block without additional hardware or steps.
• No secondary tightening required - the self-securing shaft speeds up anchor installation, reducing labor time and simplifying the fastening process on the job site.
• Mushroom head profile - provides a tamper-proof solution that helps prevent unauthorized removal once the anchor is set, making it well-suited for security-sensitive applications.
• Zinc-plated carbon steel construction - delivers a layer of corrosion resistance suited to typical concrete anchoring environments while maintaining the structural integrity of the fastener.
• Versatile application range - approved for fastening wood or light-gauge steel, attaching concrete formwork, hanging sprinkler pipe supports, and securing suspended ceiling panels.

Why This Product

• Faster installation without sacrificing holding strength - the Crimp Drive anchor's self-expanding curved shaft eliminates the tightening step that traditional expansion anchors require, cutting installation time while still achieving secure placement in concrete and grout-filled block.
• Built-in tamper resistance - the mushroom head design makes this anchor a practical choice wherever preventing unauthorized removal is a priority, adding a layer of security that standard flat or hex head anchors do not provide.
• One anchor, multiple trade applications - from concrete formwork attachment to overhead mechanical and ceiling suspension work, a single anchor style covers several common concrete fastening tasks, simplifying procurement and on-site inventory.
• Trusted Simpson engineering - the Crimp Drive design comes from Simpson Strong-Tie, a brand with a well-established reputation in structural fastening, giving contractors and installers confidence in the product's performance and consistency across concrete anchoring applications.

Specifications

• MPN: CD25300M
• Brand: Simpson Strong-Tie
• Size: 1/4 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 mushroom head profile is required

Frequently Asked Questions

What substrate is the Simpson CD25300M Crimp Drive anchor designed for?

The CD25300M is designed for use in concrete and grout-filled block, making it well-suited for structural and general anchoring applications in these substrates.

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

No. The preformed curvature along the shaft creates an expansion mechanism that secures the anchor in place automatically, eliminating the need for any secondary tightening procedure.

What is the purpose of the mushroom head on this anchor?

The mushroom head provides a tamper-proof solution, helping to prevent unauthorized removal of the anchor once it has been installed.

What material and finish is the CD25300M anchor made from?

The anchor is constructed from carbon steel with a zinc-plated finish, which provides a layer of corrosion resistance for use in typical concrete anchoring environments.

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