Simpson Deck-Drive DWP Wood Screw in #10 x 3" with Type 305 Stainless Steel finish is engineered for deck, dock, and general exterior fastening where dependable corrosion resistance is a must. The sharp point and unique box-thread design allow the screw to seat cleanly into the majority of today's deck board lumber, reducing the need for pre-drilling and delivering a secure, lasting hold. The Brown 05 color blends naturally with common wood decking tones, keeping finished surfaces looking clean and professional. Whether you are building a backyard deck, a waterfront dock, or attaching exterior fascia and trim, this flat-head wood screw provides the holding power and weather resistance the job demands.

Key Features

• Type 305 Stainless Steel material and finish - delivers superior corrosion protection compared to standard plated fasteners, making it well suited for outdoor and exposed environments where moisture and weather are constant concerns.
• Sharp Point tip - pierces wood fibers quickly for faster installation and cleaner entry without splitting deck boards, saving time on large-scale decking projects.
• Unique Box Threads - specially designed thread pattern grips the majority of wood used in today's deck boards for a tight, secure connection that resists loosening over time.
• T25 6-Lobe Drive Type - provides high torque transfer with reduced cam-out, giving installers greater control and a more consistent drive across every fastener.
• Flat Head with 0.335 in. head diameter - sits flush with the decking surface for a smooth, snag-free finish that is both functional and visually clean.
• Brown 05 color - coordinates with natural and stained wood decking tones so fastener heads blend into the finished surface rather than stand out.
• 3" length - provides adequate penetration depth for standard deck board applications, ensuring a strong mechanical connection into the substructure below.

Why This Product

• The Type 305 Stainless Steel construction makes this screw a reliable choice for deck and dock builds where prolonged exposure to humidity, rain, and exterior conditions would quickly corrode lesser fasteners.
• The sharp point and box-thread combination is specifically designed for the wood species and composite-adjacent materials common in modern deck boards, reducing installation effort and improving thread engagement without the extra step of pre-drilling.
• The T25 6-Lobe drive minimizes cam-out during installation, which means fewer stripped heads and less wasted time - especially important when driving hundreds of screws across a full deck project.
• The flat head profile seats flush with the deck surface, eliminating raised fastener heads that can catch feet, create tripping hazards, or detract from the finished look of decking, docks, and boardwalks.

Specifications

• Brand: Simpson Strong-Tie
• Screw Size: #10
• Length: 3 in.
• Head Type: Flat Head
• Head Diameter: 0.335 in.
• Drive Type: T25 6-Lobe
• Thread Type: Box Threads
• Point Type: Sharp Point
• Material: Type 305 Stainless Steel
• Finish: Type 305 Stainless Steel
• Color: Brown 05
• Approx. Count Per Lb.: 68
• Country of Origin: Taiwan

Available Pack Options

• S10300WPPBR05: 350 Pk - includes (1) T25 6-lobe driver bit
• S10300WPBBR05: 1750 Pk - includes (2) T25 6-lobe driver bits

Approved Applications

• Deck boards and decking surfaces
• Docks and boardwalks
• General exterior wood fastening
• Fascia and trim attachment
• Finishing and millwork

Frequently Asked Questions

What makes the Box Thread design beneficial for decking applications?

The unique box-thread pattern is specifically designed to engage the majority of wood types used in today's deck boards. This thread geometry provides strong, secure grip in the wood fiber, helping the screw resist loosening from seasonal wood movement, vibration, and repeated foot traffic loading - all common challenges on exterior decking and dock installations.

Is Type 305 Stainless Steel suitable for outdoor and waterfront environments?

Type 305 Stainless Steel provides excellent corrosion resistance, making it a strong choice for deck, dock, and general exterior applications where extra corrosion protection is needed. It is well suited for most outdoor environments exposed to rain and humidity. For seaside and coastal environments with salt air exposure, a higher-grade stainless steel may be more appropriate for your project.

Why does the T25 6-Lobe drive type matter for a large decking project?

The T25 6-Lobe (Torx-style) drive provides a more secure engagement between the bit and the screw head compared to traditional Phillips or square drives. This reduces cam-out - the tendency for the bit to slip out under high torque - so you maintain better control, drive screws more consistently, and experience fewer stripped heads when installing a high volume of fasteners across a full deck or dock build.

Can these screws also be used for fascia and trim work?

Yes. According to the product information, the Deck-Drive DWP screw is offered in a variety of sizes specifically to fasten fascia and trim in addition to its primary use in deck boards, docks, and boardwalks. The flat head profile and Brown 05 color make it a tidy choice for trim applications where a flush, low-profile fastener head is desirable.

Note: Product dimensions and/or thread length may differ from picture. Please see the item description above for specifications.