2-1/2″ Fastenmaster Cortex Plug Hidden Fasteners – Lava Rock (100 ln/ft)


  • Recommended Color-Matched Plug Fasteners for use with Square Edge Deck Boards
  • Cortex Concealed Fastening System for Trex Decking
  • Each box includes 224 screws, 300 plugs and 2 setting tools – 100 linear feet of coverage!
  • Conceals fasteners for the entire deck, including first and last boards, breaker boards, perimeter and stairs
  • Conceals the heads of deck screws – no predrilling needed
  • Strong connection between deck boards and joists
  • New thread design reduces installation torque and dramatically increases fastener strength
  • Plugs are made from Trex deck boards, ensuring plugs match the decking

In stock


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. Just set the screws in place and the setting tool makes sure you hit the perfect depth every time. After the screw is installed just place the provided plugs in place and hammer down. You now have a securely fastened deck without any of the unsightly fasteners!

Visit store for a closer look at our decking displays!

Additional information

Weight 3.2 lbs
Dimensions 4.5 × 4.4 × 4.3 in

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