Simpson Deck-Drive DCU Composite Screw in #10 x 2-3/4" with Type 316 Stainless Steel finish and Brown 01 color is engineered specifically for composite and PVC decking installations where a clean, professional appearance and severe-level corrosion resistance are both required. Built by Simpson, this cap-head fastener combines a Type-17 penetrating point with inverted upper threads and a color-matched painted head, making it a complete solution for composite decking in demanding outdoor environments - including coastal, poolside, and other chloride-heavy settings.

Key Features

• Type 316 Stainless Steel material - provides severe-level corrosion resistance, making this screw especially well-suited for environments with chlorides such as coastal or saltwater-adjacent installations
• Type-17 Point - penetrates composite and PVC decking cleanly without pre-drilling, speeding up installation and reducing labor time
• Inverted upper threads (Tri-Lobe Thread design) - clear excess material from the decking surface as the screw seats, ensuring a flush, clean finish without unsightly debris buildup
• Cap Head with 0.230 in. head diameter - provides a low-profile, secure bearing surface that sits flush against composite decking for a neat appearance
• T20 6-Lobe drive type - delivers positive bit engagement and reduced cam-out, giving installers better control and a more efficient drive experience
• Brown 01 color-matching painted head - blends with popular composite decking manufacturers' boards for a more concealed, professional-looking result
• 2-3/4 in. length - sized to provide the fastener depth needed for secure composite decking attachment

Why This Product

• Designed specifically for composite and PVC decking - the Type-17 point and inverted upper threads work together to penetrate and seat cleanly into composite materials without cracking, mushrooming, or leaving surface debris
• Type 316 stainless steel goes beyond standard corrosion protection - it delivers severe-level resistance to chlorides, making this the right fastener for decks near saltwater, pools, or other harsh chemical environments where standard steel or lower-grade stainless would degrade prematurely
• Color-matched Brown 01 painted heads eliminate the visual mismatch of bare metal fastener heads showing through composite boards - the result is a cleaner, more finished appearance that complements the decking surface
• A single fastener handles all composite and PVC decking types - no need to select or swap between different screw styles for different board brands, simplifying job-site inventory and installation workflow

Specifications

• Brand: Simpson Strong-Tie
• Screw Size: #10
• Length (in.): 2 3/4
• Head Diameter (in.): 0.230
• Head Type: Cap Head
• Drive Type: T20 6-Lobe
• Thread Type: Tri-Lobe Threads
• Point Type: Type-17 Point
• Material: Type 316 Stainless Steel
• Finish: Type 316 Stainless Steel
• Color: Brown 01

Available Pack Options

• DCU234C316BR01: 70 Pk - includes 1 driver bit included
• DCU234P316BR01: 350 Pk - includes 1 driver bit included
• DCU234MB316BR01: 1750 Pk - includes 2 driver bits included

Frequently Asked Questions

What types of decking materials is the DCU Composite Screw designed for?

The Deck-Drive DCU Composite Screw is engineered for all types of composite and PVC decking. Its Type-17 point is specifically designed to penetrate composite and PVC board surfaces cleanly, and the inverted upper threads clear excess material during installation to produce a flush, secure result.

Why is Type 316 Stainless Steel used instead of a standard stainless or coated steel?

Type 316 Stainless Steel provides severe-level corrosion resistance and is especially suited for applications in environments with chlorides - such as coastal regions, areas near pools, or other settings where standard stainless or coated fasteners may be prone to rust or corrosion over time. This makes the DCU 316 the appropriate choice when long-term performance in a harsh environment is a priority.

What driver bit does the Deck-Drive DCU Composite Screw require?

This screw uses a T20 6-Lobe drive type. The compatible replacement driver bit is the BIT20T-2-R2, which is engineered to work with this fastener for proper engagement and reduced cam-out during installation.

How do the color-matched heads work with composite decking boards?

The Brown 01 painted cap heads are designed to blend with popular composite decking manufacturers' board colors, creating a more concealed, professional-looking finish. This eliminates the visible contrast of bare metal heads against the decking surface. For a full color compatibility reference, see the Composite-Decking Color Cross-Reference chart in the Downloads section below. Compatible Deck-Drive Screw Plug Solution options are also available for an even more finished appearance.

Downloads and Resources

• Composite-Decking Color Cross-Reference chart

Related Products

• BIT20T-2-R2 - compatible T20 6-Lobe driver bit for use with DCU Composite Screws
• Deck-Drive Screw Plug Solution - color-matching screw plugs for a concealed fastener finish