Simpson #10 x 3" Bugle-Head Wood Deck Screw with #2 Square Drive in Type 305 Stainless Steel is a high-performance exterior fastener from Simpson Strong-Tie, engineered for secure wood-to-wood connections in outdoor decking applications. Designed specifically for fastening all types of wood decking - including cedar, redwood, and preservative-treated lumber - this coarse-thread deck screw delivers the corrosion resistance and holding power needed to keep your outdoor living spaces performing for the long term. The bugle head design allows for clean, flush countersinking without tearing the wood surface, while the Type-17 point ensures fast, reliable starts without pre-drilling the field.

Key Features

• Type 305 Stainless Steel material - provides strong corrosion resistance for exterior and outdoor decking environments, keeping fasteners secure and surface-clean even in damp or chemically treated wood conditions
• Bugle head with 0.340" head diameter - sits flush with the decking surface for a clean, professional finish that won't catch feet or damage board faces
• Type-17 cutting point - bores into wood quickly for fast starts, reducing installation effort and helping prevent splitting during driving
• Coarse thread pattern - draws decking boards tightly down to the substrate for a firm, gap-free connection that stays secure over time
• #2 Square drive - delivers excellent bit engagement and reduced cam-out compared to Phillips drive, giving the installer better control during high-torque driving
• 3" length - provides ample penetration depth for reliable wood-to-wood fastening through standard deck board thicknesses
• #10 screw size - strikes the right balance between shank strength and wood compatibility for typical deck board applications
• #2 square driver bit included - means you can begin installation immediately without hunting for a separate bit, and a replacement bit (model BIT2S-2-R2) is available if needed

Why This Product

• Built for decks exposed to the elements - Type 305 stainless steel construction makes this screw a dependable choice for cedar, redwood, and preservative-treated decking where standard steel fasteners corrode prematurely, staining wood and weakening connections
• Engineered for clean, flush installation - the bugle head geometry countersinks smoothly without surface damage, so your deck boards look finished and professional without additional work
• Reduces cam-out and installation frustration - the #2 square drive interface grips the bit firmly, meaning fewer slips, less stripped heads, and faster, more consistent driving across an entire deck project
• Everything you need to start driving - with a #2 square driver bit included in each package, there's no delay getting started, and knowing the exact replacement bit model (BIT2S-2-R2) means you're never left searching if the bit wears

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 305 Stainless Steel
• Finish: Type 305 Stainless Steel
• Approx. Count Per Lb.: 68
• Country of Origin: Taiwan

Available Pack Options

• S10300DB1: 1 Lb - includes #2 square driver bit included (replacement bit model BIT2S-2-R2)
• S10300DB5: 5 Lb - includes #2 square driver bit included (replacement bit model BIT2S-2-R2)
• S10300DBB: 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

Is this screw suitable for use with pressure-treated, cedar, or redwood decking?

Yes. This screw is specifically designed for fastening all types of wood decking, including cedar, redwood, and preservative-treated woods. The Type 305 stainless steel construction provides corrosion resistance when used with these materials in outdoor applications.

What drive bit does this screw use, and is one included?

This screw uses a #2 square drive interface. A #2 square driver bit is included in each package. If the bit wears out or is lost, the replacement bit is model BIT2S-2-R2.

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

The Type-17 point is designed for fast starts and helps the screw bore into wood without pre-drilling in most field conditions. However, pre-drilling is recommended near board ends to help prevent splitting.

What is the difference between Type 305 and Type 316 stainless steel for deck screws?

Type 305 stainless steel provides strong corrosion resistance suitable for most outdoor and preservative-treated wood decking applications. Type 316 stainless steel offers superior corrosion resistance and is the recommended choice for seaside or coastal environments where salt exposure is a factor.