TC-120 Grooved Board Hidden Deck Fastener for Hardwood

The Tiger Claw TC-120 is the fastest, easiest way to hide fasteners in hardwood decking.


Cortex and TC-G: Complete Hidden Deck Fastening System

Learn how to create a complete hidden fastened deck using the Cortex Hidden Fastening and TC-G Hidden Clip System.

Tiger Claw TC-G Grooved Decking Hidden Fastener

 The Tiger Claw TC-G clip system is the fastest, easiest way to hide fasteners on grooved decking such as Trex, TimberTech and Fiberon.


The clip has been specifically designed to install 3/4” x 4” or 6” decking that is pre-grooved or grooved with the TC-120 slot cutter.

Stainless Steel and ACQ Approved

TC-120 is made of 304 grade stainless steel and is approved for use in saltwater applications and ACQ or chemically treated lumber for long-term performance.


  • Includes #6 x 1 5/8" stainless steel screws
  • Spacer tabs on the clip automatically gap the decking 1/8th to 3/16ths for a consistent look
  • TC-120 reduces wood splitting, wood rot and board cupping.
  • Comes with a 25 year warranty.
  • Can be used with dassoXTR boards.
  • 304 stainless steel ensures a lasting connection between decking board and joist
  • The clip’s sharp prongs embed into the upper portion of the groove for strong holding power