FastenMaster Cortex for Trex Decking - 100 LF - 2-1/2"

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Quick ID: Q14306
from $22.97

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This system is designed for use with non-scalloped deck boards. For Trex Enhance, use:


  • 100 linear feet of coverage
  • Each box includes 224 screws, 300 plugs and 2 setting tools
  • Conceals fasteners for the entire deck, including first and last boards, breaker boards, perimeter and stairs
  • Plugs are made Trex deck boards, ensuring plugs match the decking
  • No pre-drilling needed
  • Strong connection between deck boards and joists
  • Galvanized screws ACQ approved; corrosion resistant
  • New thread design reduces installation torque and dramatically increases fastener strength
  • Screw length of 2.5"
  • Plug dimensions of .25" in diameter and .3" deep


Cortex Concealed Fastening System for Trex Decking is a fast and easy way to conceal fasteners and screw heads when installing Trex decking boards. The FastenMaster Cortex box includes everything needed, including 224 screws, 300 plugs and 2 setting tools. FastenMaster recommends installing with an 18 volt cordless impact drill.

How many fasteners are needed? Horizontal trim boards less than 12" wide, use two Cortex fasteners at every framing member - rafter tail or wall stud. The screws should be 16" OC or closer. Vertical trim boards (i.e., next to a door or a window), use two Cortex fasteners every 16" OC or closer. If a trim board is 12" or wider, use three screws. Each trim board must be fastened within two inches of the end of each board.

Note: Predrilling is not required throughout the majority of the project. Predrilling is required when fastening within 1/2" of the end of a board and at mitered joints. Use a 3/16" drill bit for predrilled pilot holes.


Sub BrandCortex
Compatible MaterialsTrex Transcend
Compatible ToolsTigerClaw installation gun, 18 volt cordless impact drill
Coverage (Linear Feet)100
Driver Bit IncludedNo
Head TypeTORX ttap Drive System
Included AccessoriesIncludes 224 Screws, 300 Plugs and 2 Setting Tools
MaterialCarbon Steel Screws, Trex Deck Board Plugs
Number of Plugs300
Number of Screws224
Package Quantity1
Recommended Spacing16" OC or Closer
Screw Drive TypeTORX ttap Drive System
Screw Head StyleTORX ttap Drive System
Screw Size#9

Weights and Dimensions

Length (Inches)2.5


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