Installation Guide
Page 6
Cortex
®
 Hidden Fasteners Installation
• Using Setting Tool provided, drive screw at 
medium or high speed until it disengages at 
the proper level below the deck surface. 
• Drive at one continuous speed, 
do not slow down.
DRIVE SCREW
Suggested Drills
• Install two screws into decking at each joist. 
• Maximum spacing between each row of 
screws should be 16” on center.
INSTALL DECK SCREWS INTO JOISTS
• Place plug into cored hole and 
gently tap flush with deck surface.
INSTALL PLUG
Corded or cordless (18V battery) drill with 1/2” chuck. 
Cortex
®
 Hidden Fastening System Installation Instructions
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