The Simpson Deck-Drive DCU Composite Screw in #10 x 2-3/4" with Tan 01 color is a purpose-built fastener from Simpson designed to deliver clean, professional results when installing composite or PVC deck boards. Protected by a Quik Guard Coating, this carbon-steel screw resists medium levels of corrosion, making it a reliable choice for outdoor decking environments exposed to moisture and the elements. The color-matching painted cap head in Tan 01 blends seamlessly with popular composite decking products, reducing the visible fastener footprint for a finished, polished appearance. Whether you are a professional contractor or a committed DIYer, this screw is engineered to simplify composite deck board installation while delivering lasting structural integrity.

Key Features

• Quik Guard Coating - provides medium-level corrosion resistance, helping the screw hold up in outdoor composite and PVC decking applications exposed to weather and moisture.
• Type-17 Point - self-drilling tip penetrates composite decking without pre-drilling, speeding up installation and reducing labor time.
• Inverted upper threads (Tri-Lobe Threads) - engineered to clear excess composite material as the screw seats, producing a clean, flush finish without material buildup around the head.
• Cap Head design with 0.230" head diameter - provides a broad, low-profile bearing surface that seats securely against composite decking without cracking or over-driving the material.
• T20 6-Lobe drive type - delivers positive bit engagement with reduced cam-out, giving installers more torque control and a cleaner drive experience on every fastener.
• Tan 01 color-matching painted head - blends with popular composite decking manufacturers' board colors for a concealed, professional finish that keeps the focus on your deck, not the hardware.
• 2-3/4" length at #10 screw size - sized appropriately for composite deck board fastening applications, ensuring adequate penetration and holding strength.

Why This Product

• Designed specifically for composite and PVC decking - unlike general-purpose wood screws, this fastener is engineered with the material properties of composite boards in mind, so you get a clean seat and secure hold without splitting, cracking, or surface damage.
• The Tan 01 color-matched head means your fasteners disappear into the deck surface - no mismatched silver or black screw heads interrupting the visual flow of your composite deck boards.
• Inverted upper threads actively clear composite material during installation - this prevents the unsightly raised ridges or mounding around the screw head that can occur with standard fasteners driven into composite decking.
• Quik Guard Coating provides corrosion resistance suitable for outdoor composite deck installations - giving you confidence that the fasteners will maintain their integrity over time in typical exterior weather conditions.

Specifications

• Brand: Simpson Strong-Tie
• Screw Size: #10
• Length: 2-3/4 in.
• Head Diameter: 0.230 in.
• Head Type: Cap Head
• Drive Type: T20 6-Lobe
• Thread Type: Tri-Lobe Threads
• Point Type: Type-17 Point
• Coating: Quik Guard Coating
• Finish: Quik Guard Coating
• Color: Tan 01

Available Pack Options

• DCU234TN01R70: 70 Pk - includes 1 driver bit included
• DCU234TN01R350: 350 Pk - includes 1 driver bit included
• DCU234TN01MB: 1750 Pk - includes 2 driver bits included

Approved Applications

• Decks - Deck Boards Composite

Frequently Asked Questions

What types of decking is the Deck-Drive DCU Composite Screw compatible with?

This screw is designed for use with all types of composite or PVC decking. It is not intended for standard wood deck boards - a different screw should be selected for those applications.

Why do the Tri-Lobe Threads matter for composite decking installation?

The inverted upper threads are specifically engineered to clear excess material as the screw is driven home. This prevents composite material from building up around the screw head and ensures a clean, flush, professional-looking installation every time.

What driver bit should I use with this screw?

This screw uses a T20 6-Lobe drive. The recommended replacement driver bit is the BIT20T-2-R2, which is compatible with the T20 6-Lobe recess on these fasteners.

Is the Tan 01 color head designed to match specific composite decking brands?

Yes. The color-matching painted heads are available in a wide range of colors - including Tan 01 - specifically to blend with popular composite decking manufacturers' board colors for a more concealed, professional finish. See the Composite-Decking Color Cross-Reference chart in the Downloads section for a full color-matching reference.

Downloads and Resources

• Composite-Decking Color Cross-Reference chart

Related Products

• - compatible T20 6-Lobe driver bit
• Deck-Drive Screw Plug Solution - compatible color-matching DCU Screw Plugs