Simpson Deck-Drive DSV Wood Screw - #10 x 3-1/2" Tan by Simpson is a professional-grade fastening solution engineered specifically for preservative-treated wood decking applications. Featuring a variable thread design, high-low threaded point, and Quik Guard coating, these tan deck screws are built to handle the natural expansion and contraction of fast-growth lumber - keeping deck boards tight, flat, and finished-looking for years. Whether you are building a backyard deck, a dock, boardwalk, or installing railing posts, the DSV delivers clean countersinking and reliable holding strength in exterior wood-to-wood connections.

Key Features

• Rimmed flat head with underhead nibs - countersinks smoothly into wood deck boards without pre-drilling, leaving a clean, flush, finished surface appearance
• Variable thread design - optimized for dimensional lumber, reducing cam-out and driving resistance so more work gets done on a single battery charge
• High-low threaded point - provides fast starts and aggressive thread engagement, reducing the effort needed to begin driving into wood decking
• Quik Guard coating - provides corrosion resistance for exterior and preservative-treated wood applications, keeping the fastener protected against outdoor moisture exposure
• Tan color finish - blends naturally with the tone of common wood decking materials, producing a discreet, professional appearance once driven
• T25 6-lobe drive type - delivers positive bit engagement and reduces slippage during installation, protecting both the screw head and the surrounding wood surface
• #10 screw size at 3-1/2" length - provides sufficient penetration depth for secure wood-to-wood connections in deck boards, framing, fascia, and trim applications
• Shank engineered for lumber movement - designed to withstand the swelling and shrinkage common with fast-growth lumber, helping maintain holding strength over seasonal cycles

Why This Product

• Built for preservative-treated decking - the Quik Guard coating is specifically suited for exterior conditions and certain preservative-treated wood applications, making these screws a purpose-matched choice rather than a generic substitute
• Clean, countersunk results without extra steps - the rimmed flat head with nibs drives flush into wood deck boards automatically, saving time on finishing work and eliminating the need for pre-drilling in many cases
• Handles lumber movement over time - the shank is designed to accommodate the swelling and shrinkage natural to fast-growth wood, helping prevent fastener failure or deck board cupping as seasons change
• Versatile across multiple deck and outdoor framing tasks - from deck boards and guard rail posts to docks, boardwalks, furniture, and trim, the DSV covers a broad range of wood-to-wood fastening needs in a single screw profile

Specifications

• Brand: Simpson Strong-Tie
• Screw Size: #10
• Length (in.): 3 1/2
• Head Type: Rimmed Flat Head with Nibs
• Head Diameter (in.): 0.330
• Drive Type: T25 6-Lobe
• Thread Type: Variable Thread Design
• Point Type: High-Low Threaded Point
• Coating: Quik Guard Coating
• Finish: Quik Guard Coating
• Color: Tan
• Approx. Count Per Lb: 66
• Country of Origin: Taiwan

Available Pack Options

• DSVT312R60: 60 Pk - includes T25 6-lobe driver bit (replacement driver bit - BIT25T-2-R2)
• DSVT312R1LB: 1 Lb - includes (1) T25 6-lobe driver bit (replacement driver bit - BIT25T-2-R2)
• DSVT312R5LB: 5 Lb - includes (1) T25 6-lobe driver bit (replacement driver bit - BIT25T-2-R2)
• DSVT312R350: 350 Pk - includes (1) T25 6-lobe driver bit (replacement driver bit - BIT25T-2-R2)
• DSVT312MB: 1000 Pk - includes (2) T25 6-lobe driver bits (replacement driver bit - BIT25T-2-R2)

Approved Applications

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

Frequently Asked Questions

What type of wood applications are these DSV screws designed for?

The Deck-Drive DSV Wood screw is designed primarily for preservative-treated wood decking applications including deck boards, guard rail posts, railing post-to-deck framing, docks, boardwalks, fascia, and trim. The variable thread design and high-low threaded point are optimized specifically for dimensional lumber and fast-growth wood commonly used in outdoor deck construction.

Is the Quik Guard coating suitable for exterior and preservative-treated lumber?

Yes. The Quik Guard coating provides corrosion resistance for exterior applications and certain preservative-treated wood applications. It is formulated to hold up in outdoor conditions where moisture and wood preservatives can accelerate fastener corrosion over time.

What driver bit do I need to install these screws?

These screws use a T25 6-lobe drive type. A T25 driver bit is required for installation. The 6-lobe design provides positive engagement with the screw head, reducing slippage and cam-out during driving for a cleaner, more controlled installation.

Why do these screws stay secure as wood expands and contracts?

The shank of the DSV screw is specifically designed to withstand the swelling and shrinkage that is common with fast-growth lumber. This engineering helps the fastener maintain its grip through seasonal moisture and temperature changes that cause wood to move, reducing the risk of popped or loosened screws over time.