Cortex Deck Hero
Main image 045660e6
Packaging 8e5473a3
Packaging 2 2567d5e6

The Cortex Hidden Fastening System is the fastest, easiest way to hide the heads of your deck screws across the entire deck, first and last board, perimeter, and stairs.

Cortex for Decking

Hidden Fastening System
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TORX ttap Drive System

This system is almost impossible to strip-out. In addition, the stability button keeps the fastener straight through installation.

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.

Perfect Match, Clean Finish

Cortex plugs are made from the same material as market-leading deck boards, creating a 100% perfect match every time.

Plug install

Collated Cortex Hidden Fastening for Decking

Decking Color Match Tool

Just enter your brand of decking material and color you’re working with and we’ll provide you with the right FastenMaster products that perfectly match your needs

  • Gravel Path
    Gravel Path
  • Havana Gold
    Havana Gold
  • Island Mist
    Island Mist
  • Lava Rock
    Lava Rock
  • Madeira
  • Pebble
  • Rope Swing
    Rope Swing
  • Saddle
  • Spiced Rum
    Spiced Rum
  • Tiki Torch
    Tiki Torch
  • Tree House
    Tree House
  • Vintage Lantern
    Vintage Lantern
  • Winchester Grey
    Winchester Grey
  • Woodland Brown
    Woodland Brown
  • Reclaimed Chestnut
    Reclaimed Chestnut


Since Cortex Plugs are made from the exact same material as the composite boards, the color and texture is matched perfectly every time.

Compatible with TREX boards.

Want to build the ultimate hidden deck?

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Part Numbers

TrexSelectMadeira2 1/2"100 lin ftFMCTX-TX1LFSLMD
TrexSelectMadeira2 1/2"300 sq ftFMCTX-TX300SLMD
TrexSelectPebble2 1/2"100 lin ftFMCTX-TX1LFSLPB
TrexSelectPebble2 1/2"300 sq ftFMCTX-TX300SLPB
TrexSelectSaddle2 1/2"100 lin ftFMCTX-TX1LFSLSD
TrexSelectSaddle2 1/2"300 sq ftFMCTX-TX300SLSD
TrexSelectWinchester Gray2 1/2"100 lin ftFMCTX-TX1LFSLWG
TrexSelectWinchester Gray2 1/2"300 sq ftFMCTX-TX300SLWG
TrexSelectWoodland Brown2 1/2"100 lin ftFMCTX-TX1LFSLWB
TrexSelectWoodland Brown2 1/2"300 sq ftFMCTX-TX300SLWB
TrexTranscendGravel Path2 1/2"100 lin ftFMCTX-TX1LFTSGP
TrexTranscendGravel Path2 1/2"300 sq ftFMCTX-TX300TSGP
TrexTranscendHavana Gold2 1/2"100 lin ftFMCTX-TX1LFTSHG
TrexTranscendHavana Gold2 1/2"300 sq ftFMCTX-TX300TSHG
TrexTranscendIsland Mist2 1/2"100 lin ftFMCTX-AZ100ARAI
TrexTranscendIsland Mist2 1/2"300 sq ftFMCTX-TX300TSLM
TrexTranscendLava Rock2 1/2"100 lin ftFMCTX-TX1LFTSLR
TrexTranscendLava Rock2 1/2"300 sq ftFMCTX-TX300TSLR
TrexTranscendRope Swing2 1/2"100 lin ftFMCTX-TX1LFTSRS
TrexTranscendRope Swing2 1/2"300 sq ftFMCTX-TX300TSRS
TrexTranscendSpiced Rum2 1/2"100 lin ftFMCTX-TX1LFTSSR
TrexTranscendSpiced Rum2 1/2"300 sq ftFMCTX-TX300TSSR
TrexTranscendTiki Torch2 1/2"100 lin ftFMCTX-TX1LFTSTT
TrexTranscendTiki Torch2 1/2"300 sq ftFMCTX-TX300TSTT
TrexTranscendTree House2 1/2"100 lin ftFMCTX-TX1LFTSTH
TrexTranscendTree House2 1/2"300 sq ftFMCTX-TX300TSTH
TrexTranscendVintage Lantern2 1/2"100 lin ftFMCTX-TX1LFTSVL
TrexTranscendVintage Lantern2 1/2"300 sq ftFMCTX-TX300TSVL