Simpson #10 x 1-1/4 in. Bugle-Head Wood Deck Screw, #2 Square Drive, Type 305 Stainless Steel - 4,000-Count Package is a professional-grade exterior fastener from Simpson engineered for reliable, corrosion-resistant wood decking installation. Suited for cedar, redwood, and preservative-treated woods, these screws seat flush and hold tight, giving outdoor deck surfaces a clean finished appearance that holds up over time. A driver bit is included in each package, so your crew can get straight to work.

Key Features

• Type-17 point - self-pierces quickly for fast starts, reducing installation effort and minimizing surface splintering on entry
• 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 wood surface without tearing or damaging the surrounding material
• Type 305 stainless steel construction - delivers high-level corrosion resistance, keeping fasteners strong and stain-free in exposed outdoor environments
• #2 square drive with included driver bit - reduces cam-out and gives the installer better torque control, with everything needed to start fastening right out of the package
• Predrilling recommended near board ends - a simple precaution that protects decking edges from splitting and extends the life of the boards
• 4,000 screws per package - bulk quantity keeps large decking projects moving without frequent restocking interruptions

Why This Product

• Built for the full range of wood decking materials - compatibility with cedar, redwood, and preservative-treated lumber makes these screws a single solution across nearly any exterior deck construction project, eliminating the need to source different fasteners for different wood types
• Corrosion resistance you can count on outdoors - Type 305 stainless steel is specifically chosen for high-level corrosion resistance, meaning these fasteners resist rust and degradation in the moisture-rich conditions that exterior decking routinely faces
• Engineered for speed and holding strength together - the Type-17 point starts fast while the partial-shank coarse thread pattern locks decking down firmly to framing, combining installation efficiency with the structural grip that deck boards require
• Ready-to-use packaging in a high-volume count - with an included driver bit and 4,000 screws per package, this product is practical for contractors and serious DIYers who need a reliable, job-site-ready supply without extra trips for accessories

Specifications

• Model Number: S10125DBB
• Screw Size: #10
• Length: 1-1/4 in.
• Head Type: Bugle Head
• Head Diameter: 0.340 in.
• Drive Type: #2 Square
• Thread Type: Coarse Threads
• Point Type: Type-17 Point
• Material: Type 305 Stainless Steel
• Finish: Type 305 Stainless Steel
• Quantity: 4,000 per package

Approved Applications

• Fastening Wood-to-Wood

What's Included

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

Frequently Asked Questions

What type of wood decking materials are these screws compatible with?

These screws are designed for fastening all types of wood decking, including cedar, redwood, and preservative-treated woods, making them a versatile choice for a wide range of exterior deck construction projects.

Why is a Type-17 point important on a deck screw?

The Type-17 point is specifically engineered for fast starts, allowing the screw to self-pierce into wood quickly and efficiently, reducing the effort required during installation and helping to prevent surface splintering on entry.

Do these screws require predrilling?

Predrilling is recommended near board ends to prevent splitting. While the Type-17 point and coarse thread design support efficient installation in field applications, taking care near the edges and ends of boards helps maintain the integrity of the decking material.

What corrosion resistance does Type 305 stainless steel provide?

Type 305 stainless steel provides high-level corrosion resistance, making these screws well suited for exterior decking applications where exposure to moisture and the elements is a concern. This material is particularly appropriate for use with cedar, redwood, and preservative-treated wood decking.