Simpson #8 x 1-1/4 in. Bugle-Head Wood Deck Screw, Square Drive, Type 316 Stainless Steel is a Simpson exterior wood screw engineered to deliver powerful, corrosion-resistant fastening for outdoor wood applications. Designed for use with all types of wood decking - including cedar, redwood, and preservative-treated woods - the bugle head profile allows for flush countersinking without damaging the wood surface, making it a dependable choice for long-lasting deck boards and exterior wood-to-wood connections.

Key Features

• Type-17 point - pierces wood quickly for fast, clean starts without slipping or wandering
• Coarse threads on approximately 2/3 of the shank - draw decking and other material tightly to the framing for a secure, gap-free connection
• Bugle head profile - countersinks flush with the wood surface without tearing or mushrooming the material around the fastener
• #2 square drive with driver bit included - reduces cam-out during installation and eliminates the need to source a separate bit before starting the job
• Type 316 stainless steel construction - provides severe-level corrosion resistance, keeping fasteners structurally sound in moisture-rich and chemically aggressive exterior environments
• Predrilling recommended near board ends - helps prevent splitting and protects the integrity of cedar, redwood, and treated lumber at vulnerable edge locations

Why This Product

• Built for harsh exterior conditions - Type 316 stainless steel offers severe-level corrosion resistance, making these screws a reliable long-term fastening solution for decks and outdoor structures exposed to moisture and corrosive elements.
• Engineered for a clean, professional finish - the bugle head countersinks flush without surface damage, so deck boards sit tight and look finished without additional work.
• Compatible with the most common decking materials - suitable for cedar, redwood, and preservative-treated woods, giving builders and homeowners flexibility across a wide range of decking projects.
• Ready to use straight out of the package - a #2 square driver bit is included in each package, so installation can begin immediately without hunting for additional accessories.

Specifications

• MPN: T08125DB1
• Screw Size: #8
• 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 316 Stainless Steel
• Finish: Type 316 Stainless Steel
• Approx. Count per Lb.: 185

Approved Applications

• Fastening Wood-to-Wood

What's Included

Each pack contains Bugle-Head Wood Deck Screws, #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 316 stainless steel used for this screw?

Type 316 stainless steel provides severe-level corrosion resistance, making these screws well suited for harsh exterior environments where exposure to moisture and corrosive elements is a concern.

Is predrilling required when installing these screws?

Predrilling is recommended near board ends to prevent splitting of the wood decking material.

What drive bit is needed, and is one included?

These screws require a #2 square drive bit. A #2 square driver bit is included in each package. The replacement bit model is BIT2S-2-R2.