
The Cortex Hidden Fastening System is the fastest, easiest way to hide the heads of your deck screws on market-leading deck board types. Set the screw, set the plug, and you’re all set. Cortex offers a strong connection between the deck board and the joist and can hide fasteners across the entire deck: first and last board, perimeter, and stairs.
Cortex is available for use in the following Trex brands.
- Trex®: Accents and Escapes
All screws, plugs, and setting tools are included in every box.
- Available Options
- Installation Instructions
- Technical Data
- Product Warranty Information
- Related FM Products
| Fastener Lengths: | 2 3/4", 3" |
| Color: | Trex Accents Madeira, Trex Accents Saddle, Trex Accents Winchester Grey, Trex Accents Woodland Brown, Trex Escapes Acorn, Trex Escapes Pewter, Trex Escapes Sahara |
| Packaging Size: | 100 sq ft at 16" o.c. (includes: 350 screws, 400 plugs and 3 settings tools), 300 sq ft at 16" o.c., (includes: 1050 screws, 1200 plugs and 6 setting tools) |
Using one of the drills listed below and the Cortex setting tool, drive the Cortex fastener to the preset level below the deck surface. Continuously drive the fastener at one speed until the setting tool disengages on its own. Do not stop and start the drive as this may affect the finished appearance. It is important that the Cortex screw is driven perpendicular to the deck, with two screws per joist. The setting of the Cortex screw creates a cored hole in the deck surface. Place the Cortex engineered plug into the hole with the deck surface side up. Gently tap the plug into the cored hole until the plug is flush with the deck surface.
Install the Cortex fastener using one of these suggested drills:
- Corded drill with 1/2" chuck
- Cordless drill with 1/2" chuck and 18V battery
- Impact drill












