Deck Screws

Deck screws are specialized screws designed for use in outdoor decking projects. They are commonly used to fasten pressure treated wood or composite materials to the underlying support structure of a deck, such as joists or beams.

Deck screws are made from corrosion-resistant materials, such as stainless steel or coated steel. This is to ensure they can withstand exposure to outdoor elements including: moisture, humidity, and temperature fluctuations. They can also be color matched to blend in with the wood deck or composite deck materials.

Deck screws typically have specific features that make them suitable for deck construction. These features may include:

  • Coarse threads: Deck screws usually have coarse threads that provide better grip and holding power in wood or composite materials.
  • Self-drilling or self-tapping tips: Many deck screws have self-drilling or self-tapping tips, allowing them to penetrate the wood without the need for pre-drilling pilot holes. This feature saves time and effort during installation.
  • Flat or bugle heads: Deck screws often have flat or bugle heads. Flat heads are countersunk, meaning they can be driven flush with the surface of the wood, while bugle heads are slightly raised but still provide a low-profile finish.
  • Square or star drive recess: Deck screws commonly have square drive or star-shaped drive recesses, such as Robertson (square) or Torx (star). These drive types offer better torque transfer, reducing the likelihood of slipping or stripping during installation.
  • Corrosion resistance: Due to their exposure to outdoor conditions, deck screws are typically made from corrosion-resistant materials. Stainless steel deck screws are highly resistant to rust and corrosion. Coated steel screws have protective coatings, such as zinc or epoxy coating, to enhance their durability.
  • Deck screws come in various lengths and diameters to accommodate different decking materials and thicknesses. It's essential to choose the right screw size and material for your decking project. This will guarantee a secure and durable fastening. #8 screws are typically suitable for most residential decks. #10 screws are typically used for heavier-duty decking projects including hardwood or composite decking. 2 inch and 3 inch length screws are the most common lengths.

AFT Fasteners carries a large selection of high-quality steel and stainless steel screws with only a few sizes listed online. If you can’t find a particular fastener, please contact us – our knowledgeable sales team is available to help.