Clear Plastic Jar of 8 x 3 Inch Square Drive Deck Screws
Clear Plastic Jar of 8 x 3 Inch Square Drive Deck Screws
Container of Hillman deck screws with a red lid on a wooden surface
Container of Hillman deck screws with a red lid on a wooden surface
Cardboard box with H.Paulin & Co. label on a wooden surface
Cardboard box with H.Paulin & Co. label on a wooden surface
Clear Plastic Jar of 8 x 3 Inch Square Drive Deck Screws
Container of Hillman deck screws with a red lid on a wooden surface
Cardboard box with H.Paulin & Co. label on a wooden surface

Square Drive 8 x 3 Inch Deck Screws for Heavy Builds

✔ 100% satisfaction guarantee

$17 - $58.50
/

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Upgrade your next deck or outdoor project with Paulin Exterior Deck Screws—engineered for superior wood‑to‑wood fastening. Designed specifically for use in pressure‑treated lumber, fencing, and decking applications, these screws feature a durable corrosion‑resistant coating that protects against rust, staining, and streaking, even in harsh outdoor environments.

The 8 x 3 square drive flat head deck screw provides extra thread engagement for heavy decking profiles, thick hardwood boards, and deck assemblies where standard-length fasteners don't provide adequate holding depth. At The Contractors Site, we stock these in the quantities that Ontario deck builders and contractors need for production decking work and heavy outdoor structure installations.

The DURA‑GRIP™ square drive head maximizes torque transfer for smooth installation and reduces driver slippage, keeping your work efficient and frustration‑free. Precision‑cut Saw Tooth threads bite quickly into wood, driving faster while greatly reducing the risk of splitting.

Whether you’re a professional contractor or a DIY homeowner, these high‑performance deck screws deliver long‑lasting strength and a clean, reliable finish for decks, railings, fences, and outdoor structures.

Square Drive Performance at Depth

Driving a 3-inch screw requires more torque than a shorter fastener, and cam-out under that torque is a real risk with Phillips drive at that length. The Robertson square drive on this fastener maintains engagement through the full drive cycle — consistent, controlled, cam-out-free installation even at depth and in dense decking material.

Key Features:

  • Exterior‑rated, rust‑resistant screws engineered for pressure‑treated wood

  • DURA‑GRIP™ square drive for maximum torque and reduced cam‑out

  • Saw Tooth thread design for faster driving and minimized wood splitting

  • Ideal for decking, fencing, railings, and outdoor construction projects

  • Built for long‑term durability and weather protection

 

Clear Plastic Jar of 8 x 3 Inch Square Drive Deck Screws
Square Drive 8 x 3 Inch Deck Screws for Heavy Builds
$17 - $58.50
Clear Plastic Jar of 8 x 3 Inch Square Drive Deck Screws
250
$17 /each
Container of Hillman deck screws with a red lid on a wooden surface
1000
$42 /each
Cardboard box with H.Paulin & Co. label on a wooden surface
1500
$58.50 /each
Total:

Outdoor-Rated Coating for Ontario Builds

Like all deck screws at The Contractors Site, our 8 x 3 square drive screws are coated for outdoor exposure and compatible with the ACQ and CA pressure-treated lumber commonly used in Ontario deck framing. The coating resists corrosion from moisture contact and treated lumber chemistry across multiple Ontario freeze-thaw seasons.

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