Product Description
The Simpson Deck-Drive DCU Composite Screw in #10 x 2-3/4", Tan 02, Type 305 Stainless Steel is engineered for clean, professional fastening of composite and PVC deck boards in demanding outdoor environments. Built from Type 305 stainless steel, this screw delivers reliable corrosion resistance - including in coastal and chloride-rich settings where standard fasteners fall short. A color-matching painted cap head in Tan 02 blends discreetly with popular composite decking finishes, giving installations a polished, concealed look without sacrificing structural integrity.
Key Features
- Type 305 Stainless Steel material - resists corrosion in outdoor applications, especially environments with chloride exposure such as coastal or poolside decks
- Type-17 Point - penetrates composite and PVC decking cleanly without pre-drilling, reducing installation time and effort
- Inverted upper Tri-Lobe Threads - clear excess material as the screw drives, preventing surface buildup and ensuring a flush, secure finish
- Cap Head with 0.230 in. head diameter - provides a low-profile, secure bearing surface that sits cleanly on composite decking without cracking or mushrooming
- T20 6-Lobe drive - delivers higher torque transfer and reduced cam-out compared to standard Phillips drives, making installation faster and more controlled
- Tan 02 color-matching painted head - blends with popular composite decking manufacturers' board colors for a more concealed, professional-looking deck surface
- 2-3/4 in. length - sized to provide appropriate penetration depth through composite deck boards into structural framing
Why This Product
- Designed specifically for composite and PVC decking - the Type-17 point and Tri-Lobe thread profile work together to drive cleanly into composite material without splitting, mushrooming, or leaving raised material around the head
- Type 305 stainless steel construction makes this screw a dependable choice for decks near salt water, pools, or other chloride-heavy environments where corrosion is an accelerated concern
- The Tan 02 color-matched painted head eliminates the eyesore of visible silver fasteners against tan composite boards, giving finished decks a cleaner, more professional appearance
- The T20 6-Lobe drive reduces cam-out and installer fatigue during long runs of decking, keeping each drive controlled and minimizing damage to the board surface
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
- Material: Type 305 Stainless Steel
- Finish: Type 305 Stainless Steel
- Color: Tan 02
Available Pack Options
- DCU234P305TN02: 350 Pk - includes 1 driver bit included
- DCU234MB305TN02: 1750 Pk - includes 2 driver bits included
Approved Applications
- Decks - Deck Boards Composite
Frequently Asked Questions
- What type of decking material is this screw designed for?
- This screw is designed for composite and PVC decking applications. The Type-17 point and Tri-Lobe thread profile are engineered specifically to penetrate composite decking cleanly, clear excess material, and leave a flush, secure installation without pre-drilling.
- Why is Type 305 Stainless Steel recommended for composite deck fasteners?
- Type 305 stainless steel provides corrosion resistance suited for all types of composite and PVC decking installations. It is especially well-suited for environments with chlorides - such as coastal areas, pool surrounds, or regions with road salt exposure - where standard coated fasteners may corrode more quickly.
- What is the T20 6-Lobe drive and why does it matter?
- The T20 6-Lobe drive is a six-point torx-style drive system that allows higher torque transfer to the screw head during installation. This reduces cam-out - where the driver slips out of the head - compared to standard Phillips-style drives, making installation more controlled and protecting the composite deck board surface from scuffing or gouging.
- What color replacement plug or bit is compatible with this screw?
- This screw is compatible with color-matching DCU Screw Plugs for concealed installations. The recommended replacement driver bit is the T20 6-Lobe bit. See the Related Products section below for compatible accessories available for this screw.
Downloads and Resources
Related Products
- BIT20T-2-R2 - Compatible replacement T20 6-Lobe driver bit
- Deck-Drive Screw Plug Solution - Color-matching DCU Screw Plugs for a concealed finish
Reviews
FAQs
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