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Cortex Concealed Fasteners for Trex

As low as $75.99
Availability: In stock
Only %1 left
As low as $75.99
Expected Shipping: Next day About Expected Shipping Times
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Cortex Hidden Fasteners for Trex Decking

The Cortex Hidden Fastening innovative system hides the heads of your deck screws with color-matched plugs. Extra Trex Plugs are also available.

Cortex in the loose boxes have been discontinued.. We have a few boxes on the shelf. They are clearance priced & once they're gone, they're gone. Colors & Quantities are limited. Collated Cortex Plugs with screws are available.

If you need paintable Cortex Plugs, get the Kleer White Cortex Fasteners.

Detailed Product Information

FastenMaster Cortex Fastening System

Cortex Hidden Fasteners have been redesigned with a new thread design requiring less torque, and a new bit made from stronger material for extreme pro contractor use that uses the Torx TTAP head. The TTAP head makes it almost impossible to strip the fasteners, allowing for easy removal, and a stability button keeps the screw straight when drilling. Setting Tool included in every box.

Each Cortex plug has been engineered and tested to yield ultimate long term performance. This testing includes:

  • UV Stability/Long Term Weathering Tested
  • Intense Freeze-Thaw Cycle Tested
  • Expansion/Contraction Cycle Tested
  • Moisture Saturation/Freezing Performance Tested
  • Impact Resistant
  • 8 x 2-1/2" Screws except the Trex Elevations screws which are 1-5/8" stainless steel

Typical Deck Coverage – based on 5.5" board width and 16" O.C. joist spacing

WARRANTY - Please visit or call FastenMaster at 800 518 3569 for a full written warranty. For technical assistance or questions regarding proper use of this system, please contact FastenMaster Technical Support at 800 518 3569 or visit

Additional Product Information

More Information
Package Quantity Depending on selection - 100lf pack contains 224 screws / 300 plugs | 100sq ft pack contains 350 screws / 400 plugs | 300sq ft pack contains 1050 screws / 1200 plugs | plus bits
Color Fire Pit, Gravel Path, Havana Gold, Island Mist, Rope Swing, Saddle, Tiki Torch, Tree House, Vintage Lantern, Winchester Grey, Woodland Brown
Manufacturer FastenMaster
Manufacturer Link
Dimensions #8 x 2-1/2"
CA Proposition 65

Customer Reviews for Cortex Concealed Fasteners for Trex