Simpson Deck-Drive DSV Wood Screw, #8 x 1-1/4" in Tan is a purpose-built fastener from Simpson designed for preservative-treated decking, fencing, wood-to-wood connections, and trim applications. Featuring a variable thread design, high-low threaded point, and Quik Guard coating for corrosion resistance, this screw delivers clean countersinking and reliable holding power in outdoor lumber environments where dimensional movement and moisture exposure are everyday concerns.

Key Features

• Variable Thread Design - engineered to handle the swelling and shrinkage common in fast-growth lumber, keeping the connection secure through seasonal movement
• High-Low Threaded Point - provides fast starts and firm thread engagement so you spend less time setting each screw and more time building
• Rimmed Flat Head with Nibs - underhead nibs allow the screw to countersink flush and cleanly into wood deck boards, leaving a finished, professional appearance
• T25 6-Lobe Drive Type - delivers more torque transfer and reduces cam-out compared to Phillips-style drives, making driving faster and more controlled
• Quik Guard Coating - provides corrosion resistance suited for exterior and preservative-treated wood applications, extending the life of the fastener in outdoor conditions
• Tan Color - blends naturally with wood decking and treated lumber for a cleaner, less visible fastener line once driven
• 0.330" Head Diameter - compact head profile reduces wood splitting risk while still providing the bearing surface needed for a secure, flush seat
• Approximately 194 screws per pound - the consistent sizing means predictable coverage per pound so you can plan quantities for larger decking and fencing projects

Why This Product

• Designed specifically for preservative-treated decking - the Quik Guard coating and variable thread shank work together to resist the corrosion and wood movement that break down ordinary fasteners over time in outdoor applications
• Fast, clean installation for DIY and professional builders alike - the high-low threaded point starts without pre-drilling in most decking scenarios, and the rimmed flat head with nibs countersinks in a single pass for a finished look
• Versatile beyond decking - approved for fencing, furniture, guard rail infill, fascia, and trim work, making this a practical screw to keep on hand for a wide range of exterior wood projects
• The T25 6-lobe drive reduces driver bit slipping and cam-out during high-volume driving, which translates to cleaner screw heads and less frustration on large deck board installations

Specifications

• Brand: Simpson Strong-Tie
• Screw Size: #8
• Length: 1-1/4 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: Quik Guard Coating
• Finish: Quik Guard Coating
• Color: Tan
• Approximate Count Per Lb: 194
• Country of Origin: Taiwan

Available Pack Options

• DSVT114R1LB: 1 Lb - includes (1) T25 6-lobe driver bit (replacement driver bit - BIT25T-2-R2)
• DSVT114R350: 350 Pk - includes (1) T25 6-lobe driver bit (replacement driver bit - BIT25T-2-R2)
• DSVT114R5LB: 5 Lb - includes (1) T25 6-lobe driver bit (replacement driver bit - BIT25T-2-R2)
• DSVT114MB: 1750 Pk - includes (2) T25 6-lobe driver bits (replacement driver bit - BIT25T-2-R2)

Approved Applications

• Fastening Wood-to-Wood
• Decks - Guard Rail Infill
• DIY/Home Projects
• Fencing
• Furniture

Frequently Asked Questions

Is this screw compatible with preservative-treated lumber?

Yes. The Quik Guard coating is formulated to provide corrosion resistance for exterior and certain preservative-treated wood applications, making it a suitable choice for treated deck boards, fencing, and outdoor trim where chemical exposure is a factor.

Do I need to pre-drill holes before driving these screws into deck boards?

The high-low threaded point is designed for fast starts, which typically eliminates the need for pre-drilling in standard wood decking applications. The variable thread design and point work together to pull the screw in cleanly on contact.

Will the tan color match my deck boards?

The tan finish is selected to blend with the natural and treated tones common in wood decking materials. Once countersunk flush using the rimmed flat head with nibs, the screw head is much less visible against the board surface.

Can these screws be used for applications beyond deck boards?

Yes. In addition to deck board fastening, the Deck-Drive DSV is suited for guard rail infill, fencing, furniture, fascia, trim work, and general wood-to-wood connections, giving it broad utility across exterior and DIY wood projects.