The Simpson Deck-Drive DCU Composite Screw in Brown 01 is a purpose-built fastener from Simpson designed to deliver clean, professional results when installing composite or PVC deck boards. Engineered with a Quik Guard coating for medium-level corrosion resistance, this #10 x 2-3/4" screw drives smoothly through composite decking materials and leaves a polished, color-matched finish that blends with popular decking manufacturers' products. Whether you are fastening a new composite deck surface or replacing boards on an existing structure, this screw is engineered to handle the job with precision and a refined appearance.

Key Features

• Quik Guard Coating - provides medium-level corrosion resistance, making this screw a reliable choice for outdoor composite deck installations exposed to weather and moisture
• Type-17 Point - self-drilling tip penetrates composite decking material without pre-drilling, reducing installation time and labor on deck board projects
• Inverted Upper Threads - engineered to clear excess material away from the fastening zone, ensuring a clean, flush installation without surface buildup or raised edges
• Tri-Lobe Thread Design - maximizes holding power in composite and PVC decking materials for a secure, long-lasting connection
• Cap Head with 0.230" Head Diameter - low-profile head sits neatly at the surface, contributing to a finished, professional look on completed deck boards
• T20 6-Lobe Drive Type - delivers positive bit engagement and reduces cam-out during driving, giving installers greater control and consistency across the deck surface
• Brown 01 Color-Matching Painted Head - blends with popular composite decking brands for a concealed, polished appearance that elevates the overall deck finish
• Carbon Steel Construction - provides the structural strength needed to hold composite deck boards securely over the long term

Why This Product

• Designed specifically for composite and PVC decking, this screw eliminates the guesswork of pairing a generic fastener with specialty decking materials - one screw works across all types of composite boards
• The Brown 01 painted cap head visually disappears against matching composite decking, producing a professional finish where fasteners are not a distraction on the completed deck surface
• The combination of a Type-17 self-drilling point and inverted upper threads means composite material is cleared during installation rather than pushed up around the head, resulting in a clean countersink every time
• Quik Guard-coated carbon steel offers corrosion resistance appropriate for outdoor deck environments, making this a practical choice for residential composite deck board applications

Specifications

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

Available Pack Options

• DCU234BR01R70: 70 Pk - includes 1 driver bit included
• DCU234BR01R350: 350 Pk - includes 1 driver bit included
• DCU234BR01MB: 1750 Pk - includes 2 driver bits included

Approved Applications

• Decks - Deck Boards Composite

Frequently Asked Questions

What type of decking material is the Deck-Drive DCU Composite Screw designed for?

This screw is designed for all types of composite or PVC decking. Its Type-17 point and Tri-Lobe threads are specifically engineered to penetrate and hold in composite decking materials, making it a versatile choice for composite deck board installations.

Do I need to pre-drill holes before driving this screw into composite deck boards?

No pre-drilling is required. The Type-17 point is a self-drilling tip that penetrates composite decking directly, simplifying installation and reducing the number of steps needed to complete each fastening point on the deck surface.

What driver bit does this screw require, and is a compatible bit available?

This screw uses a T20 6-Lobe drive. A compatible replacement driver bit is available - see the Related Products section below for the BIT20T-2-R2 replacement bit.

Can I use color-matching plugs with this screw to further conceal fasteners on my composite deck?

Yes. This screw is compatible with color-matching DCU Screw Plugs. See the Deck-Drive Screw Plug Solution for compatible plug options that provide an even more concealed fastening appearance on finished composite deck surfaces.

Downloads and Resources

• Composite-Decking Color Cross-Reference Chart

Related Products

• BIT20T-2-R2 - Compatible T20 6-Lobe replacement driver bit
• Deck-Drive Screw Plug Solution - Color-matching DCU Screw Plugs for a concealed finish