The Simpson 1/4 in. x 3-1/2 in. Countersunk Head Crimp Drive Anchor by Simpson is an easy-to-install expansion anchor engineered for reliable fastening in concrete and grout-filled block. Its preformed curvature along the shaft acts as a built-in expansion mechanism that locks the anchor securely in place the moment it is driven, with no secondary tightening required. The countersunk head sits flush with the surface for a clean, zero-profile finish, making this zinc-plated carbon-steel anchor well suited for applications ranging from fastening wood or light-gauge steel to hanging overhead support for sprinkler pipes and suspended ceiling panels.

Key Features

• Unique curved shaft design - creates a self-securing expansion mechanism that holds the anchor firmly in concrete and grout-filled block without additional steps
• No secondary tightening required - the preformed curvature locks the anchor in place on installation, reducing labor time and simplifying the fastening process
• Countersunk head profile - sits flush with or below the fastened surface, delivering a zero-profile finish ideal for applications where clearance or aesthetics matter
• Zinc-plated carbon-steel construction - provides a corrosion-resistant finish suitable for a variety of indoor structural and overhead fastening applications
• Versatile application range - approved for fastening wood or light-gauge steel, attaching concrete formwork, and installing suspended ceiling panels or sprinkler pipe supports

Why This Product

• Faster installations, fewer steps - because the curved shaft eliminates the need for a secondary tightening procedure, contractors and installers can drive and move on, keeping projects on schedule
• One anchor, multiple applications - from concrete formwork attachment to overhead sprinkler pipe hangers and suspended ceiling panel systems, this expansion anchor handles a wide range of structural tasks without requiring multiple anchor types on the job site
• Flush finish where it counts - the countersunk head design is purpose-built for situations where a low-profile or surface-flush result is required, eliminating the need to countersink a separate fastener
• Trusted Simpson engineering - backed by Simpson's design standards for concrete and grout-filled block anchoring, this crimp drive anchor delivers a predictable, secure hold across demanding fastening applications

Specifications

• MPN: CD25312C
• Brand: Simpson Strong-Tie
• Size: 1/4 in. x 3-1/2 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
• Installing suspended ceiling panels

Frequently Asked Questions

What type of base material is the Simpson CD25312C Crimp Drive anchor designed for?

The Simpson Strong-Tie Crimp Drive anchor is designed for use in concrete and grout-filled block, making it suitable for a wide range of structural and overhead fastening applications.

Does the CD25312C require a secondary tightening procedure 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 and speeding up the overall installation process.

What is the head style on the CD25312C, and why does it matter?

The CD25312C features a countersunk head, which provides a zero-profile solution. This means the head sits flush with or below the surface of the fastened material, which is especially useful in applications where a smooth, low-profile finish is required.

What are the material and coating specifications for this anchor?

The Simpson CD25312C is manufactured from carbon steel with a zinc-plated finish, which provides a basic level of corrosion resistance for general indoor and protected construction applications.