The Deck Store is Canada’s premier deck and outdoor living design, supply, and build company.
We are the largest volume dealer of decking and outdoor building materials in the Canadian market.


$30.89$1,029.81 + HST

HeadLOK Flathead Structural Wood Screw

Learn how our HeadLOK Flathead Structural Wood Screw is ideal for fastening a variety of wood applications.

The HeadLOK flat head fastener is a heavy-duty structural wood screw requires no predrilling and offers higher design shear than 3/8″ lag screws. HeadLOK zips right in and creates a great finished look.


  • Deck Framing
  • Stair Framing
  • Attaching rigid foam (SIPs)
  • Fences
  • Kitchen cabinets and more.


  • 3/8” lag screw replacement
  • No predrilling
  • Flat head provides great finished look
  • The SpiderDrive™ System contains eight points of contact, maximizing bit fit and reducing stripping.
  • Sharp gimlet point for fast installation into wood and OSB
  • Aggressive thread for holding and withdrawal strength
  • Free SpiderDrive™ bit in every package

*Spider Drive bits are included in all HeadLok packs: QTY 12&50 (1 bit) QTY 250&500 (3 bits)