Cortex was the first ever screw & plugs fastening system on the market – allowing you to fasten your deck without leaving visible fasteners anywhere on the deck surface. The screw countersinks into the board so the plug can then be tapped into place, hiding the fastener.

Cortex plugs are specific to match each board type. It’s crucial for FastenMaster to offer a wide range of plug options to match the ever growing selection of deck boards on the market.