The Simpson 1/4 in. x 4 in. Zinc-Plated Countersunk 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 a built-in expansion mechanism that secures the anchor firmly in place upon installation, eliminating the need for a secondary tightening procedure. The countersunk head delivers a zero-profile finish, making this carbon-steel anchor a practical choice for fastening wood or light-gauge steel, attaching concrete formwork, and supporting overhead loads such as sprinkler pipes and suspended ceiling panels.

Key Features

• Unique curved shaft design - the preformed curvature acts as a self-contained expansion mechanism, locking the anchor securely in concrete and grout-filled block without additional hardware or steps
• No secondary tightening required - installation is complete as soon as the anchor is driven, reducing labor time and simplifying the fastening process on busy job sites
• Countersunk head provides a zero-profile solution - the head sits flush with or below the surface, keeping finished surfaces clean and unobstructed where appearance or clearance matters
• Zinc-plated carbon-steel construction - provides a standard level of corrosion resistance appropriate for concrete and grout-filled block applications

Why This Product

• Faster installation without compromise - the built-in crimp expansion eliminates the extra tightening step required by many traditional expansion anchors, letting crews move through repetitive fastening tasks more efficiently
• Versatile across common masonry applications - one anchor design covers a range of tasks including fastening wood or light-gauge steel to concrete, attaching concrete formwork, and hanging overhead support for sprinkler pipes or suspended ceiling panels
• Flush finish for surface-sensitive installations - the countersunk head is specifically suited for applications where a protruding fastener head would interfere with adjacent materials or the final surface appearance
• Trusted Simpson engineering - this anchor comes from Simpson, a brand widely recognized in structural fastening, giving contractors and builders confidence in consistent performance across concrete and masonry substrates

Specifications

• MPN: CD25400C
• Brand: Simpson Strong-Tie
• Size: 1/4 in. x 4 in.
• Head Type: Countersunk Head
• Material: Carbon Steel
• Coating: Zinc Plated
• Finish: Zinc Plated
• Packaging: Packs of 100 and Cartons of 400

Approved Applications

• Fastening wood or 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 CD25400C Crimp Drive anchor compatible with?

The CD25400C is designed for use in concrete and grout-filled block, making it suitable for a wide range of structural and finish applications in masonry construction.

Does this anchor require a secondary tightening step after installation?

No. The preformed curvature along the shaft acts as a built-in expansion mechanism that secures the anchor in place upon installation, eliminating the need for any secondary tightening procedure.

What is the head style of the CD25400C, and what advantage does it offer?

This anchor features a countersunk head, which provides a zero-profile solution - meaning the head sits flush with or below the surface for applications where a flat finish is required.

What material and finish is the CD25400C anchor made from?

The anchor is constructed from carbon steel with a zinc-plated finish, providing a standard level of corrosion resistance suitable for the anchor's intended concrete and grout-filled block applications.

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