The Simpson #8 x 1-1/8 in. Bugle-Head Wood Deck Screw is engineered for reliable exterior wood fastening, delivering the corrosion resistance and holding power that outdoor decking projects demand. Built from Type 305 stainless steel, these screws are purpose-designed for cedar, redwood, and preservative-treated woods, making them a dependable choice for deck boards and wood-to-wood connections exposed to the elements. The bugle head profile countersinks flush with the surface for a clean, professional finish, and each package includes a #2 square driver bit so work can begin immediately.

Key Features

• Type-17 Point - Cuts into wood quickly for fast, confident starts without the screw wandering or requiring excessive force.
• Coarse Threads on Approximately 2/3 of the Shank - Draws decking and other material tightly against the framing for a snug, secure connection that resists pull-through over time.
• Bugle Head Profile - Countersinks flush with the wood surface automatically, eliminating the need for a separate countersinking step and leaving a clean finish.
• Type 305 Stainless Steel Construction - Provides high-level corrosion resistance in demanding outdoor environments, including use with preservative-treated lumber.
• #2 Square Drive with Included Bit - The square drive resists cam-out better than Phillips, and the included driver bit means your crew can get straight to work; replacement bit model BIT2S-2-R2 is available separately.
• Predrilling Recommended Near Board Ends - A simple extra step at vulnerable board ends prevents splitting and protects the integrity of your decking material.
• 5,000-Count Bulk Package - A high-volume pack keeps large deck installations moving without repeated restocking interruptions.

Why This Product

• Built for the Harshest Outdoor Conditions - Type 305 stainless steel resists corrosion at a high level, making these screws well-suited for coastal, wet, or chemically treated wood environments where standard fasteners would fail prematurely.
• Engineered Specifically for Wood Decking - The combination of a Type-17 point, coarse partial-shank threads, and a bugle head is purpose-matched to deck board installation, working together to speed up fastening while pulling boards tight and finishing flush.
• Reduced Labor Friction from the Start - A #2 square driver bit is included in the package and the Type-17 point eliminates the slow, careful starting that slows crews down, so installation is faster and less fatiguing over a full deck job.
• Trusted Simpson Engineering for Structural Confidence - Simpson is a recognized name in structural fastening, and these screws are explicitly approved for fastening cedar, redwood, and preservative-treated wood decking to framing, giving contractors and DIYers confidence in the connection.

Specifications

• Model Number (MPN): S08112DBB
• Screw Size: #8
• Length: 1-1/8 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: 5,000 per package

Approved Applications

• Fastening Wood-to-Wood - Designed specifically for fastening all types of wood decking, including cedar, redwood, and preservative-treated woods, directly to wood framing members.

What's Included

• 5,000 x Simpson S08112DBB #8 x 1-1/8 in. Bugle-Head Wood Deck Screws (Type 305 Stainless Steel)
• #2 Square

Frequently Asked Questions

Can these screws be used with preservative-treated lumber?

Yes. These screws are specifically designed for fastening all types of wood decking, including cedar, redwood, and preservative-treated woods. The Type 305 stainless steel construction provides high-level corrosion resistance, making them well-suited for use with treated lumber in exterior applications.

Is predrilling required when installing these screws?

Predrilling is not required in all situations, but it is recommended near board ends to prevent splitting. The Type-17 point is designed for fast starts and helps the screw bite into wood quickly without predrilling in most field locations.

What drive type does this screw use, and is a driver bit included?

This screw uses a #2 square drive. A #2 square driver bit is included in each package. If you need a replacement bit, the compatible model is BIT2S-2-R2.

How do the threads on this screw secure the decking to the framing?

The screw features coarse threads on approximately 2/3 of the shank. This thread pattern draws the decking and other material tightly to the framing as the screw is driven, creating a secure, gap-free connection.