Simpson Deck-Drive DWP Wood Screw in Type 316 Stainless Steel is a purpose-built fastening solution from Simpson designed for deck boards, docks, boardwalks, fascia, and general exterior wood applications where superior corrosion resistance is essential. The #10 x 2-1/2" flat head screw combines a sharp-point tip with unique box-thread geometry to deliver fast, reliable penetration into the widest range of wood species and engineered wood products - making it a trusted choice for coastal, seaside, and wet-environment installations where standard fasteners fall short.

Key Features

• Type 316 Stainless Steel material - provides heightened resistance to salt spray, moisture, and harsh coastal or marine environments, keeping fasteners structurally sound long-term in the most demanding exterior conditions.
• Unique box-thread design with raised-ridge technology - greatly reduces driving torque so you can drive more screws per battery charge, increasing jobsite efficiency without sacrificing holding strength.
• Specially designed sharp point - penetrates hardwood, engineered wood, and polymer decking products with ease, eliminating the need for pre-drilling in most applications and saving significant installation time.
• T25 6-lobe drive - provides a secure, wobble-free bit engagement that reduces cam-out, extends bit life, and results in cleaner, faster driving throughout the work day.
• Flat head profile with 0.335" head diameter - sits flush with the deck surface for a clean, professional finish that minimizes trip hazards and moisture traps on decking and trim.
• Compatible with wood, engineered wood, and polymer materials - versatile enough to handle the full range of today's decking and trim products, from traditional lumber to composite and synthetic boards.

Why This Product

• Built specifically for coastal and wet-exposure environments - Type 316 stainless steel offers a higher level of corrosion protection than standard 304 SS or coated fasteners, making it the right choice for docks, boardwalks, and seaside decks where salt air and moisture are constant concerns.
• Reduces installer fatigue and battery drain - the box-thread design's low driving torque means less resistance with every screw, directly translating to more screws driven per charge and less physical strain over a full day of decking work.
• Eliminates pre-drilling in most applications - the sharp point is engineered to self-start into hardwoods and engineered lumber, speeding up installation and reducing the need for additional tools on the job.
• Versatile sizing for decking, fascia, and trim - the #10 x 2-1/2" profile suits a broad range of decking and trim applications, and the DWP line is available in multiple sizes to cover fascia and finish work as well.

Specifications

• Brand: Simpson Strong-Tie
• Screw Size: #10
• Length: 2-1/2 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 316 Stainless Steel
• Finish: Type 316 Stainless Steel
• Approx. Count Per Lb.: 82
• Color: None
• Country of Origin: Taiwan

Available Pack Options

• T10250WP-RP10: 10 Pk
• T10250WP-RP50: 50 Pk - includes (1) T25 6-lobe bit included (BIT25T-2)
• T10250WP1: 1 Lb - includes (1) T25 6-lobe driver bit
• T10250WP-RP200: 200 Pk - includes (1) T25 6-lobe bit included (BIT25T-2)
• T10250WPP: 350 Pk - includes (1) T25 6-lobe driver bit
• T10250WP5: 5 Lb - includes (1) T25 6-lobe driver bit
• T10250WPB: 1750 Pk - includes (2) T25 6-lobe driver bits

Approved Applications

• Deck boards and decking surfaces
• Docks and boardwalks
• General exterior wood construction
• Fascia and trim installation
• Millwork and finishing applications
• Coastal and seaside environments requiring extra corrosion protection

Frequently Asked Questions

Why choose Type 316 stainless steel over other finishes for outdoor fasteners?

Type 316 stainless steel contains molybdenum, which gives it greater resistance to chlorides, salt air, and chemical exposure compared to standard stainless grades - making it especially well-suited for docks, boardwalks, and seaside deck applications where prolonged moisture and salt exposure would corrode standard fasteners.

Do these screws require pre-drilling before installation?

No. The DWP Wood screw features a specially designed sharp point that is engineered to penetrate hardwood, engineered wood, and polymer decking materials without pre-drilling, simplifying installation and reducing the tools needed on the job site.

What is a box-thread design and why does it matter?

Box threads are a unique thread geometry - combined with raised-ridge technology on the DWP screw - that significantly reduces the torque required to drive the screw. This means less resistance during installation, which reduces battery drain on cordless tools and allows more screws to be driven on a single charge.

What materials can this screw be used with?

The Deck-Drive DWP Wood screw is suitable for use with wood, engineered wood, and polymer materials, covering the majority of deck board types available today, as well as fascia and trim applications in exterior settings.

Note: Product dimensions and/or thread length may differ from picture.