Simpson #10 x 3" Bugle-Head Wood Deck Screw with #2 Square Drive in Type 316 Stainless Steel is engineered by Simpson Strong-Tie to deliver powerful, corrosion-resistant fastening for exterior wood decking applications. Designed to handle cedar, redwood, and preservative-treated lumber, this coarse-thread fastener is built for long-term performance in demanding outdoor environments - including coastal and high-moisture settings where standard stainless steel falls short. The bugle head profile allows for clean, flush countersinking without surface damage, making it a go-to solution for professional deck builders and serious DIYers alike.

Key Features

• Type 316 Stainless Steel material - provides superior corrosion resistance compared to standard 304 stainless, making this screw well-suited for seaside, saltwater-adjacent, and chemically harsh outdoor environments where long-term fastener integrity is critical.
• Bugle head design with 0.340" head diameter - sits flush with the decking surface during installation, eliminating proud fastener heads that can snag feet or cause uneven board seating.
• Type-17 cutting point - bores into wood fibers on contact for fast, clean starts without the need to pre-drill in most applications, reducing installation time and effort.
• #2 Square drive - delivers high torque transfer with minimal cam-out compared to Phillips drives, keeping the bit firmly seated and reducing driver slippage during repetitive fastening.
• Coarse thread pattern - draws decking boards and substrate tightly together during installation, creating strong wood-to-wood connections that resist pull-through and movement over time.
• 3" length in #10 gauge - provides substantial grip depth for wood deck board applications, ensuring a secure hold through the decking layer and into the joist below.
• #2 square driver bit included in each package - means you can get started immediately without sourcing a separate bit, saving a trip to the toolbox on the jobsite.

Why This Product

• Built for coastal and high-exposure environments - Type 316 stainless steel offers elevated resistance to saltwater corrosion and chemical exposure, making this screw the right choice when decks are near the ocean or exposed to preservative-treated lumber chemicals that can degrade lesser fasteners.
• Compatible with all common decking species - approved for use with cedar, redwood, and preservative-treated woods, this screw adapts to the most popular deck board materials without compatibility concerns or voided warranties.
• Engineered for flush, professional results - the bugle head geometry countersinks smoothly into wood without tearing or mushrooming the surface, producing a clean, finished appearance without additional work.
• Reduces installation friction with every drive - the combination of a Type-17 point for fast penetration and a coarse thread for strong draw means fewer stripped screws, faster installs, and tighter board-to-joist connections from start to finish.

Specifications

• Brand: Simpson Strong-Tie
• Screw Size: #10
• Length: 3 in.
• Head Type: Bugle Head
• Head Diameter: 0.340 in.
• Drive Type: #2 Square
• Thread Type: Coarse Threads
• Point Type: Type-17 Point
• Material: Type 316 Stainless Steel
• Finish: Type 316 Stainless Steel
• Approx. Count Per Lb: 68
• Country of Origin: Taiwan

Available Pack Options

• T10300DB1: 1 Lb - includes #2 square driver bit included (replacement bit model BIT2S-2-R2)
• T10300DB5: 5 Lb - includes #2 square driver bit included (replacement bit model BIT2S-2-R2)
• T10300DBB: 1500 Pk - includes #2 square driver bit included (replacement bit model BIT2S-2-R2)

Approved Applications

• Fastening Wood-to-Wood
• Decks - Deck Boards Wood

Frequently Asked Questions

What types of wood decking can this screw be used with?

This screw is suitable for fastening all types of wood decking, including cedar, redwood, and preservative-treated woods. The Type 316 stainless steel construction resists the corrosive chemicals present in many treated lumber products, maintaining fastener integrity over time.

Why choose Type 316 stainless steel over other finishes for deck screws?

Type 316 stainless steel provides superior resistance to saltwater, moisture, and chemical exposure compared to standard stainless steel grades. It is specifically recommended for seaside and coastal applications where corrosion from salt air or harsh environmental conditions is a concern.

Does the bugle head require countersinking before installation?

No. The bugle head is designed to countersink flush into the wood surface as the screw is driven, without requiring a pre-drilled countersink hole in most applications. This speeds up installation while delivering a clean, flush surface finish. Note that predrilling near board ends is recommended to prevent splitting.

What is the Type-17 point and why does it matter?

The Type-17 point features a cutting tip that bores into wood fibers on contact, allowing the screw to start quickly and cleanly without requiring a pilot hole in most situations. This reduces installation time and minimizes the chance of wood splitting during driving.