The Simpson Deck-Drive DSV Wood Screw in #10 x 4" Tan by Simpson is a professional-grade fastening solution engineered specifically for preservative-treated wood decking applications. With a Variable Thread Design, Rimmed Flat Head with Nibs, and Quik Guard Coating, this screw is built to handle the structural and aesthetic demands of outdoor deck boards, dock construction, boardwalks, guard rail posts, and wood trim. The tan color blends naturally with common wood decking tones, delivering a clean, finished look while the high-low threaded point ensures fast, confident starts without pre-drilling.

Key Features

• Quik Guard Coating - provides corrosion resistance for exterior and certain preservative-treated wood applications, helping the screw stand up to outdoor exposure and moisture-rich environments as described by ICC-ES AC257, exposure conditions 1 and 3.
• Rimmed Flat Head with Nibs - the underhead nibs allow the screw to countersink smoothly and cleanly into wood deck boards, producing a flush, professional surface finish without visible fastener heads.
• Variable Thread Design - the shank is engineered to accommodate the swelling and shrinkage common in fast-growth lumber, reducing the risk of board splitting or fastener loosening over time.
• High-Low Threaded Point - delivers fast, accurate starts and reduces drive time, making installation more efficient and reducing wear on the drill bit and battery.
• T25 6-Lobe Drive Type - provides a secure, slip-resistant driver engagement that minimizes cam-out and reduces damage to the screw head during installation.
• Tan Color - blends with natural and treated wood decking surfaces, keeping the finished deck surface visually consistent and aesthetically clean.
• #10 x 4" Size - substantial length and shank diameter for reliable wood-to-wood holding strength in deck boards, fascia, trim, and structural framing connections.
• Low-torque thread geometry - allows more screws to be driven per battery charge compared to standard thread designs, improving productivity on larger decking projects.

Why This Product

• Designed for today's treated lumber challenges - the Variable Thread Design directly addresses the swelling and shrinkage behavior typical of fast-growth and preservative-treated wood, helping maintain a tight, secure connection even as seasonal wood movement occurs.
• Versatile across multiple outdoor applications - suited for deck boards, dock and boardwalk construction, guard rail post connections, fascia and trim, and general framing, making it a single fastener that covers a wide range of structural and finish carpentry tasks.
• Corrosion resistance backed by ICC-ES AC257 - the Quik Guard Coating meets recognized standards for use in exterior and certain preservative-treated wood environments, giving builders and DIYers confidence in long-term outdoor performance.
• Clean countersink for a finished appearance - the Rimmed Flat Head with underhead nibs seats flush without pre-drilling, producing a neat surface that complements the tan color match to common wood decking tones.

Specifications

• Brand: Simpson Strong-Tie
• Screw Size: #10
• Length: 4 in.
• Head Diameter: 0.330 in.
• Head Type: Rimmed Flat Head with Nibs
• Drive Type: T25 6-Lobe
• Thread Type: Variable Thread Design
• Point Type: High-Low Threaded Point
• Coating/Finish: Quik Guard Coating
• Color: Tan
• Approximate Count Per Lb: 59
• Country of Origin: Taiwan

Available Pack Options

• DSVT4R50: 50 Pk - includes T25 6-lobe driver bit (replacement driver bit - BIT25T-2-R2)
• DSVT4R1LB: 1 Lb - includes (1) T25 6-lobe driver bit (replacement driver bit - BIT25T-2-R2)
• DSVT4R5LB: 5 Lb - includes (1) T25 6-lobe driver bit (replacement driver bit - BIT25T-2-R2)
• DSVT4R350: 350 Pk - includes (1) T25 6-lobe driver bit (replacement driver bit - BIT25T-2-R2)
• DSVT4MB: 1000 Pk - includes (2) T25 6-lobe driver bits (replacement driver bit - BIT25T-2-R2)

Approved Applications

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

Frequently Asked Questions

Is this screw compatible with preservative-treated lumber?

Yes. The Quik Guard Coating is designed to provide corrosion resistance for exterior and certain preservative-treated wood applications as described by ICC-ES AC257, exposure conditions 1 and 3, making it a suitable choice for treated deck boards, dock framing, and similar outdoor structures.

Do I need to pre-drill before driving these screws?

Pre-drilling is typically not required. The High-Low Threaded Point is engineered for fast starts, and the Rimmed Flat Head with Nibs is designed to countersink cleanly into wood deck boards without the need for pre-drilling in most standard decking applications.

What driver bit does this screw use?

This screw uses a T25 6-Lobe driver bit. The 6-lobe engagement minimizes cam-out during installation and provides a secure, controlled drive, which is especially helpful when driving multiple screws on large decking projects.

Can these screws be used for applications beyond deck boards?

Yes. In addition to wood deck boards, these screws are suited for dock and boardwalk construction, guard rail post connections, fascia and trim fastening, general framing, furniture, and other wood-to-wood applications where a corrosion-resistant, tan-colored fastener is appropriate.

Note: Product dimensions and/or thread length may differ from picture.