Product Description
The Simpson Deck-Drive DCU Composite Screw, #10 x 2-3/4 in., Type 305 Stainless Steel, Collated, 1000-Pack is purpose-built for composite and PVC deck board installations where a clean, professional finish and long-term corrosion resistance are non-negotiable. Engineered by Simpson to serve as a single go-to fastener across composite decking applications, this curved-collated screw eliminates the guesswork of matching different fasteners to different boards - delivering consistent, damage-free seating every time it is driven. It is also an approved fastener by Trex for use with Trex composite decking, giving contractors and homeowners an added layer of confidence on high-profile projects.
Key Features
- Tri-Lobe Thread Design - reduces damage to the composite board during driving, preserving board integrity and surface appearance across every fastening point
- Inverted Upper Threads - clear excess material as the screw seats, ensuring a proper, consistent depth every time and minimizing the need for rework or adjustments
- Type-17 Point - penetrates composite decking with ease for faster starts, reducing installation time and driver bit wear on large-scale deck projects
- Cap Head Profile - prevents mushrooming and material rise above the deck surface, leaving a smooth, clean-looking finish that requires no additional touch-up
- Type 305 Stainless Steel Construction - provides superb corrosion resistance suited for outdoor decking environments where moisture exposure is a constant concern
- Curved Collation for Auto-Feed Systems - compatible with the Simpson Strong-Tie Quik Drive PRO300SG2 auto-feed screw driving system or attachment, dramatically increasing installation speed on production deck builds
- T20 6-Lobe Drive - delivers secure bit engagement to reduce cam-out and driver slippage, and a T20 6-lobe driver bit is included so you can begin work immediately
- Trex-Approved Fastener - meets Trex composite decking approval requirements, making these screws a code-confident choice for projects specifying manufacturer-approved fasteners
Why This Product
- One screw for all composite and PVC decking - the DCU Composite Screw is designed to work across all types of composite and PVC deck boards, eliminating the need to stock or sort multiple fastener types for a single project
- Engineered for a cleaner finish - the cap head design and inverted upper threads work together to prevent material rise and ensure consistent seating depth, producing a professional-grade surface appearance without extra finishing steps
- Corrosion resistance built for outdoor longevity - Type 305 stainless steel construction means these fasteners are built to hold up against the moisture, humidity, and weather exposure that composite deck installations face over years of use
- Ready for high-speed production installs - curved collation and compatibility with the Simpson Strong-Tie Quik Drive PRO300SG2 auto-feed system means faster driving, less fatigue, and greater output on large deck projects
Specifications
- Model No.: DCU234S305
- Screw Size: #10
- Length: 2-3/4 in.
- Material: Type 305 Stainless Steel
- Finish: Type 305 Stainless Steel
- Head Type: Cap Head
- Head Diameter: 0.230 in.
- Drive Type: T20 6-Lobe
- Thread Type: Tri-Lobe Threads
- Point Type: Type-17 Point
- Collation Type: Curved
- Compatible Tool: Simpson Strong-Tie Quik Drive PRO300SG2 auto-feed screw driving system or attachment
- Packaging Quantity: 1,000 per package
Approved Applications
- Decks - Deck Boards Composite
What's Included
- 1,000 collated DCU234S305 composite deck screws
- T20 6-lobe driver bit (replacement bit model BITTX20-PL-RC3)
Frequently Asked Questions
- What type of decking are these screws designed for?
- The Deck-Drive DCU Composite screw is engineered for all types of composite and PVC decking. It is also an approved fastener by Trex for use with Trex composite decking, making it a versatile, go-to screw for composite decking applications without the need to mix and match fasteners.
- Why is the tri-lobe thread design beneficial for composite decking?
- The tri-lobe thread design specifically reduces damage to the composite board during driving. Additionally, inverted upper threads clear excess material to ensure the screw is seated properly and consistently every time, resulting in a cleaner and more professional finish.
- What tool is recommended for installing these collated screws?
- These curved-collated screws install with the Simpson Strong-Tie Quik Drive PRO300SG2 auto-feed screw driving system or attachment, enabling faster and more efficient installation across large deck projects.
- Are these screws corrosion resistant, and what material are they made from?
- Yes. These screws are made from Type 305 stainless steel, which provides superb corrosion resistance and long-lasting durability - an important consideration for outdoor decking applications exposed to moisture and the elements.
Downloads and Resources
- Composite-Decking Color Cross-Reference chart
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