Cortex Hidden System for Stairs, First, Last & Perimeter Boards

The Cortex Hidden Fastening System is the fastest, easiest way to hide the heads of your deck screws on market-leading deck board types. Set the deck screw, set the deck plug, and you’re all set.

HeadLOK Structural Wood Screw

For deck framing, stair stringers, attaching rigid foam (SIPs), fences, kitchen cabinets and more