FastenMaster Cortex for Azek Decking - 100 SF - 2-1/2"
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Compatible with AZEK Arbor, Harvest, and Vintage Collection

Conceals fasteners for the entire deck, including first and last boards, perimeter and stairs

Each box includes (350) screws, (400) plugs and (3) set screws

Plugs are made from OEM brand name deck boards, ensuring plugs match the decking

Conceals the heads of deck screws

Strong connection between deck boards and joists

TORX(R) ttap(R) Drive System

New thread design reduces installation torque and dramatically increases fastener strength

Length of 2-1/2"


Cortex Concealed Fastening System for Decking is a fast and easy way to conceal fasteners and screw heads when installing decking boards. Installation is easy by using two screws per joist connection. The FastenMaster Cortex box includes everything needed, including screws, plugs and setting tools. FastenMaster recommends installing with an 18 volt cordless drill with 1/2" chuck or a corded drill with 1/2" chuck.

Cortex is available in the following decking brands: Cortex Screws for AZEK Arbor, Harvest, and Vintage Collection Decking Cortex Screws for CEVN NEW Decking Cortex Screws for EverGrain Classic Collection Decking Cortex Screws for TimberTech TwinFinish and ReliaBoard Decking Cortex Screws for Trex Accents and Escapes Decking


Manufacturer FastenMaster
Brand FastenMaster
Sub Brand Cortex
Compatible Materials TimberTech Azek Decking
Coverage 75 SQ/FT for 12" OC, 100 SQ/FT for 16" OC
Driver Bit Included No
Finish Epoxy-Coated
Installation Tools Required 18V or Greater Cordless Drill with 1/2" Chuck or Impact Driver
Material Carbon Steel Screws / TimberTech Azek Deck Board Plugs
Number of Plugs 400
Number of Screws 350
Package Includes (350) Screws, (400) Plugs, (3) Setting Tools
Recommended Spacing 16" OC or Closer
Recommended Use Hidden Deck Fastening
Screw Drive Type TORX ttap
Screw Size #9

Weights and Dimensions

Length (Inches) 2.5

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