Simpson Deck-Drive DSV Wood Screw, #10 x 2-1/2 in., Black by Simpson Strong-Tie is a purpose-engineered fastener designed for preservative-treated wood decking applications. Featuring a variable thread design, rimmed flat head with underhead nibs, and a fast-start high-low threaded point, this black deck screw drives cleanly and countersinks flush for a finished appearance on wood deck boards. The Quik Guard coating delivers corrosion resistance suited to exterior and certain preservative-treated lumber environments, making these screws a reliable choice for deck boards, guard rail posts, railing post-to-deck framing, fascia, trim, and general wood-to-wood fastening projects.

Key Features

• Quik Guard Coating - provides corrosion resistance for exterior applications and certain preservative-treated wood environments, helping the screw stand up to outdoor exposure over time.
• Variable Thread Design with High-Low Threaded Point - threads are optimized to reduce driving torque and allow fast starts, so installers can drive more screws per battery charge and work more efficiently.
• Rimmed Flat Head with Underhead Nibs - countersinks cleanly into wood deck boards without pre-drilling, leaving a smooth, finished surface appearance.
• T25 6-Lobe Drive Type - delivers positive bit engagement and reduces cam-out, giving the installer better control and a cleaner drive, especially in repetitive decking work.
• Shank designed for wood movement - engineered to withstand the swelling and shrinkage common with fast-growth lumber, helping maintain joint integrity through seasonal changes.
• Black color finish - blends with wood decking tones for a cleaner, less visible fastener appearance once driven.
• T25 6-lobe driver bit included - the correct bit is ready to use right away, eliminating the need to source a separate driver for installation.

Why This Product

• Built specifically for preservative-treated decking - the Quik Guard coating meets corrosion resistance requirements for exterior and pressure-treated wood applications, making this screw a code-appropriate choice for outdoor deck construction.
• Engineered for wood deck boards that move - the variable thread shank accommodates the natural swelling and shrinkage of fast-growth lumber, reducing the risk of raised screw heads or surface splitting over time.
• Drives fast and countersinks clean - the high-low threaded point and underhead nibs allow the screw to start quickly and seat flush without pre-drilling, saving time on large decking projects.
• Versatile sizing for deck boards, fascia, and trim - available in a range of sizes, this screw handles multiple decking tasks beyond just field boards, reducing the number of fastener types needed on a project.

Specifications

• Brand: Simpson Strong-Tie
• Screw Size: #10
• Length: 2-1/2 in.
• Head Diameter: 0.330 in.
• Head Type: Rimmed Flat Head with Nibs
• Drive Type: T25 6-Lobe
• Thread Type: Variable Thread Design
• TPI: Variable
• Point Type: High-Low Threaded Point
• Coating: Quik Guard Coating
• Finish: Quik Guard Coating
• Color: Black
• Approx. Count Per Lb: 91
• Country of Origin: Taiwan

Available Pack Options

• DSVBK212R80: 80 Pk - includes T25 6-lobe driver bit (replacement driver bit - BIT25T-2-R2)
• DSVBK212R240: 240 Pk - includes T25 6-lobe driver bit (replacement driver bit - BIT25T-2-R2)
• DSVBK212R240 -3: 720 Pk - includes T25 6-lobe driver bit (replacement driver bit - BIT25T-2-R2)

Approved Applications

• Fastening Wood-to-Wood
• DIY/Home Projects
• Decks - Deck Boards Wood
• Decks - Guard Rail Post to Deck
• Furniture
• Decks - Railing Post-to-Deck Framing

Frequently Asked Questions

What type of wood applications are these screws designed for?

The Deck-Drive DSV Wood Screw is designed for preservative-treated wood decking applications including wood deck boards, guard rail posts, railing post-to-deck framing, fascia, and trim. It is also suitable for general wood-to-wood fastening and DIY home projects.

What corrosion resistance does the Quik Guard coating provide?

The Quik Guard coating provides corrosion resistance for exterior and certain preservative-treated wood applications as described by ICC-ES AC257, exposure conditions 1 and 3.

Does this screw require pre-drilling into wood deck boards?

No. The high-low threaded point is designed for fast starts, and the rimmed flat head with underhead nibs is engineered to countersink directly into wood deck boards without pre-drilling, leaving a clean finished surface.

Why is a variable thread design used on this screw?

The variable thread design is optimized to reduce driving torque and accommodate the swelling and shrinkage common with fast-growth lumber, helping maintain a secure fastening even as wood moves seasonally.