Simpson #8 x 1-5/8" Bugle-Head Wood Deck Screw with #2 Square Drive in Type 316 Stainless Steel is engineered by Simpson Strong-Tie for reliable, long-lasting fastening of exterior wood decking in demanding outdoor environments. Designed specifically for use with cedar, redwood, and preservative-treated lumber, this deck fastener delivers flush countersinking and exceptional corrosion resistance - making it a go-to choice for coastal applications, seaside decks, and any project where exposure to moisture, salt air, or harsh weather is a concern. The Type-17 self-starting point and coarse thread design work together to drive cleanly and draw boards tight without pre-drilling through the field, giving installers a faster, more consistent result on wood-to-wood deck framing applications.

Key Features

• Type 316 Stainless Steel material - offers superior corrosion resistance compared to standard stainless grades, making this screw especially suited for seaside, coastal, and wet outdoor environments where rust or staining would compromise the deck's appearance and structure.
• Bugle head design with 0.340" head diameter - allows the screw to countersink flush with the decking surface without tearing or mushrooming the wood fibers, producing a clean, professional finish on cedar, redwood, and treated lumber.
• #2 Square drive type - provides positive bit engagement and reduces cam-out during installation, giving you better control and a more consistent drive depth even in repetitive fastening tasks.
• Type-17 point - cuts into wood fibers rather than pushing them aside, enabling fast, clean starts without pre-drilling in most field applications and reducing the risk of splitting.
• Coarse thread pattern - draws decking boards tightly down to the substrate for a secure, rigid connection between wood deck boards and the underlying framing.
• #2 square driver bit included - means you can begin fastening immediately upon opening the package, with a replacement bit available (model BIT2S-2-R2) when needed.
• Approximately 150 screws per pound - provides a reliable reference for estimating quantities needed for your decking project before purchasing.

Why This Product

• Built for coastal and high-humidity decking projects - Type 316 stainless steel provides enhanced resistance to saltwater, chemicals, and prolonged moisture exposure, making this screw the right fastener choice when standard coated or Type 304 stainless screws may not hold up over time.
• Engineered specifically for wood decking - the combination of a bugle head, Type-17 point, and coarse threads is optimized for fastening cedar, redwood, and preservative-treated deck boards to wood framing, addressing the specific challenges those materials present during installation.
• Reduces installation steps - the Type-17 self-starting point allows for fast starts in most wood decking applications, helping installers work more efficiently across large deck surfaces without stopping to pre-drill every fastening location in the field.
• Trusted Simpson Strong-Tie quality for exterior living spaces - Simpson's exterior wood screws are designed to help outdoor structures perform as durably as interior construction, giving builders and homeowners confidence in the long-term integrity of their deck.

Specifications

• Brand: Simpson Strong-Tie
• Screw Size: #8
• Length: 1-5/8 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 316 Stainless Steel
• Finish: Type 316 Stainless Steel
• Approx. Count Per Lb: 150
• Country of Origin: Taiwan

Available Pack Options

• T08162DB1: 1 Lb - includes #2 square driver bit included (replacement bit model BIT2S-2-R2)
• T08162DB5: 5 Lb - includes #2 square driver bit included (replacement bit model BIT2S-2-R2)
• T08162DBB: 4000 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

What types of wood decking is this screw compatible with?

This screw is designed for fastening all types of wood decking, including cedar, redwood, and preservative-treated woods. The Type-17 point and coarse thread pattern are optimized for driving cleanly into these materials and drawing boards tightly to the substrate.

Why choose Type 316 stainless steel over other finishes for a deck screw?

Type 316 stainless steel provides superior corrosion resistance, making it especially well suited for seaside applications, coastal environments, and anywhere the fasteners will be exposed to salt air, moisture, or harsh outdoor conditions over the long term. It is a step above standard Type 304 stainless steel in corrosion resistance.

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

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

Do I need to pre-drill before installing this screw near board ends?

The Type-17 point allows for fast starts in most field locations without pre-drilling. However, pre-drilling is recommended near board ends to help prevent wood splitting - a common best practice when fastening cedar, redwood, or treated decking close to the edge of a board.