Cortex Hidden System for Decking

The Cortex Hidden Fastening System is the fastest, easiest way to hide fasteners in composite, capstock, and PVC decking boards. Cortex offers a strong connection between the deck board and joist. It hides fasteners across the entire deck, first and last board, perimeter and stairs. And it just got better!

Cortex now comes with the following product enhancements:

TORX® ttap® Drive System: This system is almost impossible to strip-out. In addition, the stability button keeps the fastener straight through installation.

Modified Fastener: New thread design reduces installation torque and dramatically increases fastener strength. Length moves from 2-3/4” to 2-1/2”.

Stronger Setting Tool: Optimized for extreme pro contractor use. Stronger bit material and industrial grade felt will enable you to install 350 fasteners on one Cortex Setting Tool.

Cortex is available in a 100 lineal foot package, a 100 square foot package and a 300 square foot package. All screws, plugs, and setting tools are included in every box.

Cortex is available from FastenMaster for the following decking brands in these packaging sizes:

  • AZEK® (100 and 300 sq ft)
  • EverGrain (100 and 300 sq ft)
  • Trex Accents® (100 and 300 sq ft)
  • Trex Select® (100 lineal foot and 300 sq ft)
  • Trex Transcend® (100 lineal foot and 300 sq ft)
  • Trex Enhance (100 lineal foot and 300 sq ft)

To identify SKU for ordering, please select your board type then color from the dropdown menus located in the product selection tab below.

Cortex is also available directly from the following board manufacturers. For ordering information and stocking dealers, please click manufacturer links shown below to visit their websites.

Videos

Cortex and TC-G: Complete Hidden Deck Fastening System

Learn how to create a complete hidden fastened deck using the Cortex Hidden Fastening and TC-G Hidden Clip System.

Cortex Hidden Fastening System – Removing a Cammed-Out Deck Screw

Learn how to remove a cammed-out deck screw.

ADDITIONAL RESOURCES:
Visit the Cortex Deck product page

  • Sku Selections
  • Installation
  • Technical Docs
  • Purchase FM Products
SKU Board Type Color Fastener Lengths SKU
FMCTX-TX1LFTSVL Trex Transcend Vintage Lantern 2 1/2" FMCTX-TX1LFTSVL
FMCTX-TX1LFTSTH Trex Transcend Tree House 2 1/2" FMCTX-TX1LFTSTH
FMCTX-TX1LFTSTT Trex Transcend Tiki Torch 2 1/2" FMCTX-TX1LFTSTT
FMCTX-TX1LFTSSR Trex Transcend Spiced Rum 2 1/2" FMCTX-TX1LFTSSR
FMCTX-TX1LFTSRS Trex Transcend Rope Swing 2 1/2" FMCTX-TX1LFTSRS
FMCTX-TX1LFTSLR Trex Transcend Lava Rock 2 1/2" FMCTX-TX1LFTSLR
FMCTX-TX1LFSLWG Trex Select Winchester Gray 2 3/4" FMCTX-TX1LFSLWG
FMCTX-TX1LFTSFP Trex Transcend Fire Pit 2 1/2" FMCTX-TX1LFTSFP
FMCTX-TX1LFTSGP Trex Transcend Gravel Path 2 1/2" FMCTX-TX1LFTSGP
FMCTX-TX1LFSLWB Trex Select Woodland Brown 2 3/4" FMCTX-TX1LFSLWB
FMCTX-TX1LFSLSD Trex Select Saddle 2 3/4" FMCTX-TX1LFSLSD
FMCTX-TX1LFSLMD Trex Select Madeira 2 3/4" FMCTX-TX1LFSLMD
FMCTX-EG300CCWW EverGrain Weathered Wood 2 3/4" FMCTX-EG300CCWW
FMCTX-EG300CCCR EverGrain Cedar 2 3/4" FMCTX-EG300CCCR
FMCTX-EG300CCRW EverGrain Redwood 2 3/4" FMCTX-EG300CCRW
FMCTX-EG300CCCG EverGrain Cape Cod Grey 2 3/4" FMCTX-EG300CCCG
FMCTX-EG100CCWW EverGrain Weathered Wood 2 3/4" FMCTX-EG100CCWW
FMCTX-EG100CCRW EverGrain Redwood 2 3/4" FMCTX-EG100CCRW
FMCTX-EG100CCCR EverGrain Cedar 2 3/4" FMCTX-EG100CCCR
FMCTX-EG100CCCG EverGrain Cape Cod Grey 2 3/4" FMCTX-EG100CCCG
FMCTX-AZ300CESG AZEK Co-Extruded AZEK Slate Gray 2 3/4" FMCTX-AZ300CESG
FMCTX-AZ300CEBS AZEK Co-Extruded AZEK Brownstone 2 3/4" FMCTX-AZ300CEBS
FMCTX-AZ300ARSO AZEK Arbor Silver Oak 2 3/4" FMCTX-AZ300ARSO
FMCTX-AZ100CESG AZEK Co-Extruded AZEK Slate Gray 2 3/4" FMCTX-AZ100CESG
FMCTX-AZ100CEBS AZEK Co-Extruded AZEK Brownstone 2 3/4" FMCTX-AZ100CEBS
FMCTX-AZ100ARSO AZEK Arbor Silver Oak 2 3/4" FMCTX-AZ100ARSO
FMCTX-TX300TSHG Trex Transcend Havana Gold 2 1/2" FMCTX-TX300TSHG
FMCTX-TX1LFTSLM Trex Transcend Island Mist 2 1/2" FMCTX-AZ100ARAI
FMCTX-TX1LFTSHG Trex Transcend Havana Gold 2 1/2" FMCTX-TX1LFTSHG
FMCTX-TX300TSLM Trex Transcend Island Mist 2 1/2" FMCTX-TX300TSLM
FMCTX-TX300TSLR Trex Transcend Lava Rock 2 1/2" FMCTX-TX300TSLR
FMCTX-TX300TSSR Trex Transcend Spiced Rum 2 1/2" FMCTX-TX300TSSR
FMCTX-TX300TSFP Trex Transcend Fire Pit 2 1/2" FMCTX-TX300TSFP
FMCTX-TX300TSTH Trex Transcend Tree House 2 1/2" FMCTX-TX300TSTH
FMCTX-TX300TSVL Trex Transcend Vintage Lantern 2 1/2" FMCTX-TX300TSVL
FMCTX-TX300TSTT Trex Transcend Tiki Torch 2 1/2" FMCTX-TX300TSTT
FMCTX-TX300TSGP Trex Transcend Gravel Path 2 1/2" FMCTX-TX300TSGP
FMCTX-TX300TSRS Trex Transcend Rope Swing 2 1/2" FMCTX-TX300TSRS
FMCTX-TX1LFSLPB Trex Select Pebble 2 1/2" FMCTX-TX1LFSLPB
FMCTX-TX300SLMD Trex Select Madeira 2 1/2" FMCTX-TX300SLMD
FMCTX-TX300SLSD Trex Select Saddle 2 1/2" FMCTX-TX300SLSD
FMCTX-TX300SLWG Trex Select Winchester Gray 2 1/2" FMCTX-TX300SLWG
FMCTX-TX300SLWB Trex Select Woodland Brown 2 1/2" FMCTX-TX300SLWB
FMCTX-TX300SLPB Trex Select Pebble 2 1/2" FMCTX-TX300SLPB
FMCTX-TX1LFENBD Trex Enchance Trex Enhance Beach Dune 2 1/2" FMCTX-TX1LFENBD
FMCTX-TX1LFENCS Trex Enchance Trex Enhance Clam Shell 2 1/2" FMCTX-TX1LFENCS
FMCTX-TX1LFENSD Trex Enchance Saddle 2 1/2" FMCTX-TX1LFENSD
FMCTX-TX300ENBD Trex Enchance Trex Enhance Beach Dune 2 1/2" FMCTX-TX300ENBD
FMCTX-TX300ENCS Trex Enchance Trex Enhance Clam Shell 2 1/2" FMCTX-TX300ENCS
FMCTX-TX300ENSD Trex Enchance Saddle 2 1/2" FMCTX-TX300ENSD
FMCTX-AZ100VGDH AZEK Vintage Dark Hickory 2 1/2" FMCTX-AZ100VGDH
FMCTX-AZ100VGCY AZEK Vintage Cypress 2 1/2" FMCTX-AZ100VGCY
FMCTX-AZ300ARHW AZEK Arbor AZEK Hazelwood 2 1/2" FMCTX-AZ300ARHW
FMCTX-AZ100ARHW AZEK Arbor AZEK Hazelwood 2 1/2" FMCTX-AZ100ARHW
FMCTX-AZ100VGMH AZEK Vintage Mahogany 2 1/2" FMCTX-AZ100VGMH
FMCTX-AZ300VGCY AZEK Vintage Cypress 2 1/2" FMCTX-AZ300VGCY
FMCTX-AZ300VGDH AZEK Vintage Dark Hickory 2 1/2" FMCTX-AZ300VGDH
FMCTX-AZ300VGMH AZEK Vintage Mahogany 2 1/2" FMCTX-AZ300VGMH
FMCTX-EG1LFGW EverGrain Envision GreyWood 2 1/2" FMCTX-EG1LFGW
FMCTX-EG1LFSA EverGrain Envision Shaded Auburn 2 1/2" FMCTX-EG1LFSA
FMCTX-EG1LFST EverGrain Envision Spiced Teak 2 1/2" FMCTX-EG1LFST
FMCTX-EG1LFRW EverGrain Envision Rustic Walnut 2 1/2" FMCTX-EG1LFRW

Using one of the drills listed below and the Cortex setting tool, drive the Cortex fastener to the preset level below the deck surface. Continuously drive the fastener at one speed until the setting tool disengages on its own. Do not stop and start the drive as this may affect the finished appearance. It is important that the Cortex screw is driven perpendicular to the deck, with two screws per joist. The setting of the Cortex screw creates a cored hole in the deck surface. Place the Cortex engineered plug into the hole with the deck surface side up. Gently tap the plug into the cored hole until the plug is flush with the deck surface.

Install the Cortex fastener using one of these suggested drills:

  • Corded drill with 1/2" chuck
  • Cordless drill with 1/2" chuck and 18V battery
  • Impact drill

Cortex Installation and Removal Tips

This file container installation and removal tips for Cortex

Warranty Information

Guarantee of Performance - 2012/5/1

This file contains information regarding Cortex guarantee of performance

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