Cortex Concealed Fastening System for TimberTech Evolutions Decking - 224 pc Brick

Cortex Concealed Fastening System for TimberTech Evolutions Decking - 224 pc Brick

DecksDirect Item #6590

Regular Price: $69.99

Sale $29.97

Quantity Remaining: 2

Orders over $99 qualify.
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Available for a limited time!


 Durable   DIY Friendly   Authorized Dealer

FastenMaster deck screws and fasteners are considered to be the gold standard... Learn More



Avoid having to caulk, sand or paint over trim fasteners - use the FastenMaster Cortex Fastening System for Azek Trim. It's the fastest, easiest way to conceal the heads of your deck screws on Azek trim, now with an improved design that utilizes a 2-3/4" screw. Set the screw. Set the plug. You're all set!

Key Features
- Fast and Easy: The deck boards are fastened in the same way as a traditional deck
- Strong Connection: A through-fastened deck offers the highest level of board-to-joist connection and deck racking strength
- Cost Effective: Less expensive than virtually any other hidden fastening system
- Fully Tested: All Cortex components have been fully tested and are guaranteed
- Made in the USA

Product Specifications

Drive TypeSquare
Head TypeTrim
Screw Length2-3/4"
Screw Size#8
Material TypeSteel with 3 layer epoxy coating
Pack Size224
Coverage Estimate224 Piece Box: 100 lineal feet at 12 inches on center
Included Accessories(224) #8 x 2-3/4" screws, (300) plugs and (2) Cortex setting tools
WarrantyFastenMaster Guarantee of Performance
OtherMade in the USA!


Additional Information

Additional Information

DecksDirect Item # 6590
Manufacturer FastenMaster

FastenMaster Guarantee of Performance (123 KB) 


FastenMaster logo

FastenMaster deck screws and fasteners are considered to be the gold standard among professionals. With over a dozen options to choose from, you can be sure you’ll find the perfect hardware for any decking project.


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FastenMaster is constantly expanding their product line in order to ensure customers get exactly what they need at the right price. The TimberLOK Truss Screws are designed for wood-to-wood projects while the ThruLOK Screw Bolts secure posts and beams without the need for pre-drilling. The LedgerLOK Ledger Board Fasteners are some of the best available and could easily be considered the industry-standard.


FastenMaster products are recommended by professionals for quick but long-lasting results with no pre-drilling and a higher shear strength than lag screws, available here at DecksDirect.

Features and Benefits
  Durable Quality This brand offers products that are built to last and withstand the elements.
  DIY Friendly This brand is reliable and easy-to-install for professionals and DIYers alike.
  Authorized Dealer DecksDirect is an authorized dealer of this brand, dedicated to service and selection for our customers nationwide.
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