GRK Fasteners Kameleon 67158 Deck Screw, #9 Thread, 2-1/2 in L, Coarse Thread, Flat Head, Star Drive, Type 17 Point, 100/PK

Heads blend in with decking with no mushrooming effect. Use in plastic or composite decking. They come in a variety of deck matching colors of which gray, brown and tan are approved for use with Trex Selectâ„¢ deck boards. GRK's Kameleonâ„¢ screws are an excellent choice for composite and PVC decking applications. The underhead has saw-blade like cutting teeth that cut a perfectly clean hole into the decking. The Kameleonâ„¢ also features five to seven rings that have three indented fiber traps on each ring designed to trap fibers and eliminate the mushroom effect. The Kameleon screws are self-tapping featuring fiber trapping rings, a countersinking head with cutting teeth, CEE Threadâ„¢, W-Cutâ„¢ threads for reduced torque and our Climatekâ„¢ AC257 code approved coating. They are ESR code approved under ICC Report ESR-3201. The CEE thread feature enlarges the screw hole allowing the composite decking to settle easily, increases the screw's drawing strength and reduces the friction on the screw shank, which can result in lowering the overall driving torque.