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Complete your composite decking installation quickly while keeping your deck floor smooth and fastener-free! The Collated Cortex Fastening System for Trex allows you to securely attach your Trex Transcend, Select, or Enhance deck boards in place without any rising screws or hardware blemishes.

Even if you're using hidden fasteners, the Collated Cortex System for Trex Decking from FastenMaster is ideal for fastening down the boards on the outside of your deck, and Cortex plugs work perfectly for stair treads, too. The top of the container doubles as an installation template to make sure your fasteners land perfectly every time.

FastenMaster Cortex Concealed Plugs are now offered in a convenient collated strip so you can save both time and energy while installing. Simply pre-drill the Trex deck board, drive the steel screw to the perfect depth with the included setting tool, and insert a coordinating plug in the opening for a polished finish. Cortex Concealed Plugs are made from actual Trex decking material for a cohesive look from shade to grain.

Note for Trex Enhance plugs: the installation template located on the lid of the packaging is required to install plugs into Trex Enhance deck boards, due to their scalloped board bottoms. The lid includes handy templates for both standard installation and cantilevered boards.

The FastenMaster Collated Cortex Hidden Fastening System comes in a wide range of different colors to perfectly match every shade of Trex Transcend, Trex Transcend Lineage, Trex Select, Trex Enhance Naturals and Trex Enhance Basics deck boards. Each pack is engineered to cover approximately 100 lineal feet and will include collated strips of (240) Cortex plugs, (224) steel screws, and (2) screw-setting tools.


DecksDirect # 46509

Collated Cortex for Trex Enhance Installation Instructions (123 KB) 

Cortex Concealed Fastening System Installation Instructions (123 KB) 

Cortex Concealed Fastening System Brochure (594 KB) 

Cortex Concealed Fastening System Warranty (123 KB) 


Trex Transcend Colors: Carmel, Biscayne, Gravel Path, Havana Gold, Island Mist, Jasper, Lava Rock, Rainier, Rope Swing, Spiced Rum, Tiki Torch, and Vintage Lantern
Trex Select Colors: Madeira, Pebble Grey, Saddle, Winchester Grey and Woodland Brown
Trex Enhance Colors: Beach Dune, Clam Shell, Coastal Bluff, Foggy Wharf, Rocky Harbor, Saddle and Toasted Sand
Material Type Plugs: Made from Trex Decking
Screws: Epoxy coated carbon steel
Screw Drive Type Torx
Screw Size 2-1/2 in
Pack Size 224 pack
Coverage Estimate 100 linear ft
Package Contents (224) screws, (240) collated plugs, and (2) setting tools, (1) Spotter Lid Installation Template
WarrantyView FastenMaster Warranty Information
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