The Simpson 3/16 in. x 3 in. Countersunk Head Crimp Drive Anchor is an easy-to-install expansion anchor from Simpson engineered for secure fastening in concrete and grout-filled block. The preformed curvature along the shaft creates a built-in expansion mechanism that locks the anchor firmly in place upon driving, so there is no secondary tightening step required. The countersunk head sits flush with or below the surface of the fixture material, delivering a clean, zero-profile finish 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 - the preformed curvature acts as a self-contained expansion mechanism, providing secure placement in concrete and grout-filled block without the need for additional hardware or procedures.
• No secondary tightening required - the anchor locks in place upon driving, reducing installation steps and speeding up workflow on the job site.
• Countersunk head profile - sits flush with or below the fixture surface, giving a zero-profile finish that keeps surfaces clean and unobstructed.
• Zinc-plated carbon steel construction - the zinc plating over carbon steel provides corrosion resistance and durability for demanding masonry fastening environments.
• Versatile application range - suitable for fastening wood or light-gauge steel to masonry, attaching concrete formwork, and supporting sprinkler pipes or suspended ceiling panels.

Why This Product

• Simplified installation process - because the curved shaft eliminates the need for a secondary tightening procedure, crews can drive and move on, making this anchor a practical choice for high-volume concrete and masonry fastening tasks.
• Flush, surface-friendly finish - the countersunk head design is purpose-built for applications where a protruding anchor head would interfere with the fixture, making it well suited for formwork, ceiling panel support, and other low-clearance installations.
• Broad application compatibility - from structural connections like fastening wood or light-gauge steel to mechanical trade work such as hanging sprinkler pipe support, a single anchor design covers multiple common masonry fastening scenarios.
• Proven Simpson engineering - the Crimp Drive anchor is backed by Simpson's established design approach, with the preformed expansion mechanism built directly into the shaft so performance does not depend on installer torque technique.

Specifications

• Manufacturer Part Number (MPN): CD18300C
• Brand: Simpson Strong-Tie
• Size: 3/16 in. x 3 in.
• Head Type: Countersunk 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
• Suspended ceiling panel support installations

Frequently Asked Questions

What base materials is the Simpson Strong-Tie CD18300C designed for?

The CD18300C Crimp Drive anchor is designed for use in concrete and grout-filled block, making it suitable for a wide range of structural and mechanical fastening tasks in masonry construction.

Does the CD18300C require tightening after installation?

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

What is the benefit of the countersunk head on this anchor?

The countersunk head provides a zero-profile solution, meaning the anchor sits flush with or below the surface of the fixture material. This is ideal for applications where a clean, low-profile finish is required.

What material and finish is the CD18300C made from?

The CD18300C is constructed from zinc-plated carbon steel, which provides corrosion resistance and durability suited for concrete and grout-filled block fastening applications.

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