Simpson #10 x 1-3/4 in. Bugle-Head Wood Deck Screw, Square Drive, Type 305 Stainless is a purpose-built exterior fastener from Simpson designed to deliver reliable, corrosion-resistant performance across all types of wood decking applications. Whether you are working with cedar, redwood, or preservative-treated lumber, the bugle head countersinks flush with the surface for a clean, professional finish, while Type 305 stainless steel construction stands up to the moisture and element exposure that outdoor projects demand. Packaged in a contractor-friendly quantity of 3,000, this screw is engineered from the point up for efficient installation and long-term holding strength.

Key Features

• Type-17 point - drives into wood quickly for fast, confident starts without wandering, reducing installation time on the job site.
• Coarse threads on approximately 2/3 of the shank - draws decking and other material tightly to the framing for a secure, gap-free connection.
• Bugle head design - countersinks flush with the decking surface so you get a smooth, finished look without additional surface work.
• Type 305 stainless steel construction - provides high-level corrosion resistance, keeping fasteners structurally sound and stain-free in demanding outdoor environments.
• #2 square drive - resists cam-out better than Phillips drive, giving you greater control and reducing stripped heads during installation; a driver bit is included in each package.
• Predrilling recommended near board ends - helps prevent splitting in cedar, redwood, and treated lumber where end-grain is most vulnerable.
• 3,000 screws per package - supplies enough fasteners for large deck builds or multiple projects, minimizing mid-job supply runs.

Why This Product

• Built specifically for exterior wood decking - approved for fastening cedar, redwood, and preservative-treated woods, this screw addresses the exact compatibility and corrosion demands of outdoor deck construction rather than serving as a generic all-purpose fastener.
• Engineered for speed and holding power together - the combination of a Type-17 point for fast starts and coarse threads that engage approximately 2/3 of the shank means faster drives without sacrificing the tight, secure pull-down that keeps deck boards from lifting or shifting over time.
• High-level corrosion resistance from Type 305 stainless steel - for projects exposed to rain, humidity, and treated-lumber chemicals, stainless steel construction helps these fasteners maintain integrity and appearance over years of outdoor service.
• Ready-to-install packaging from a trusted brand - Simpson includes a #2 square driver bit in each package so you can get to work immediately, with a known replacement bit model available when needed.

Specifications

• Model Number: S10175DBB
• Screw Size: #10
• Length: 1-3/4 in.
• Head Type: Bugle Head
• Head Diameter: 0.340 in.
• Drive Type: #2 Square
• Thread Type: Coarse Threads
• Point Type: Type-17 Point
• Material/Finish: Type 305 Stainless Steel
• Quantity: 3,000 per package

Approved Applications

• Fastening Wood-to-Wood
• Fastening all types of wood decking, including cedar, redwood, and preservative-treated woods

What's Included

• #2 square driver bit included (replacement bit model BIT2S-2-R2)

Frequently Asked Questions

What type of wood is this screw compatible with?

This screw is suitable for fastening all types of wood decking, including cedar, redwood, and preservative-treated woods.

Why is Type 305 stainless steel used for this screw?

Type 305 stainless steel provides high-level corrosion resistance, making these screws well-suited for exterior and outdoor decking applications where exposure to moisture and the elements is a concern.

Is predrilling required when installing these screws?

Predrilling is recommended near board ends to prevent splitting. For field installations away from board ends, the Type-17 point is designed for fast starts without predrilling.

Does this package include a driver bit?

Yes, a #2 square driver bit is included in each package. A replacement bit is available under model number BIT2S-2-R2.