Internet #202268271

Store SO SKU #336802

FastenMaster Cortex Concealed Fastening System for Trex, Woodland Brown-DISCONTINUED

Discontinued FastenMaster

Cortex Concealed Fastening System for Trex, Woodland Brown-DISCONTINUED

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Product Overview

Set the screw. Set the plug. You are all set! Cortex Concealed Fastening System for Trex Decking is the perfect way to conceal the fasteners on your new Trex deck. Cortex utilizes traditional face fastening methods so there is no need to learn a new clip system or work at odd angles under the deck. Cortex plugs are made out of the same Trex material which eliminates issues with expansion, contraction or wear. Plus, Cortex fastens all parts of your decking project first board, last board and stairs and is less expensive than virtually any other hidden fastening system on the market. 100 and 300 sq ft kits come complete with everything you need to complete your job: screws, plugs and bits.

  • Fast and Easy: deck boards are fastened in the same way as a traditional deck
  • Strong Connection: A through-fastened connection offers highest level of board to joist connection
  • Fully Tested: All Cortex components have been fully tested and are guaranteed for the life of the project. ACQ Approved
  • Plugs made out of Trex material. Same as deck
  • Free Cortex Setting tools in every package



Assembled Depth (in.)
.210 in
Assembled Height (in.)
2.75 in
Assembled Width (in.)
0.21 in
Individual product height (in.)
Individual product length (in.)
Individual product width (in.)
Square Footage Secured per Package (sq. ft.)


Color Family
Decking Hardware Type
Hidden Deck Fasteners
Fastener/Connector Material
Number in Package
Screws Included
Total Product Weight (lb.)

Warranty / Certifications

Manufacturer Warranty
FastenMaster fully guarantees Cortex against popping or rusting for the lifetime of the project. Please see the following link for further details at:

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Customer Questions & Answers

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Customer Reviews

Cortex Concealed Fastening System for Trex, Woodland Brown-DISCONTINUED is rated 1.0 out of 5 by 1.
Rated 1 out of 5 by from Screws are Garbage, the Plugs are Great Without a doubt, these screws are absolute garbage. The strip out extremely easily. There are varying reasons, but the bulk of what I rant into was the head is just too weak to support the torque and it strips. The other major cause was material buildup that slows the screw and requires additional torque, leading to the stripping. Additionally, the bit provided doesn't help as it is very weak and rounds off easily. All of this leads to more stripped screws than not. Once it strips, if its flush or below, you'll never get it out. Even if it doesn't strip, you'll struggle with getting them out. When you buy this, you really are just buying it for the plugs. The plugs work well and after days of agony with the screws and tons of wasted Trex, I bought some Rustoleum screws with star heads and bits and they worked perfectly and the plug fits in them perfectly. You can't find the plugs anywhere on their own, so just chock it up to $80.00 for the plugs and then buy better screws.
Date published: 2012-06-29
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