*Listed price shown includes 20% discount on all GRK products.

GRK has modified its innovative FIN/Trim™ Head Screw to include reverse threading under the head of the fastener. After extensive testing, GRK has found that the reverse thread on the RT Composite™ Trim™ Head Screw helps the screw disappear beneath the surface of the wood composite material, reducing or eliminating the dimple that sometimes appears when using the FIN/Trim™ Screw.

GRK's RT Composite™ Trim™ Head Screws are ideal for most fine carpentry applications, and are recommended for most composite decking projects and climates. The reverse thread feature is available in sizes from 50mm to 80mm.

The RT Composite™ Trim™ Head screw's exceptionally small head, along with the W-Cut™ thread design, prevent most material splitting. Pre-drilling is only necessary if the building material's limitations require a pilot hole to be drilled.

RT Composite™ Trim™ Head screws come with Climatek™ corrosion protection. This will come in very handy when using theTrim™ screws in composite decking.

FOR BEST RESULTS, TRIM™ SCREWS SHOULD BE DRIVEN AT HALF SPEED.

TO PROLONG THE LIFE OF THE T10 BIT, DO NOT USE AN IMPACT DRIVER ON THE #8 (4.0)TRIM™ HEAD SCREW.

Patented W-Cut™ Thread Design and ZipTip™

The W-Cut™ is a patented thread design which acts like a saw blade cutting through any fibrous materials with ease. This unique design reduces the amount of torque required to install the screw, and maintains a high pull out strength. By cutting through, rather than pressing fibers aside, the W-Cut™ also reduces material splitting.

The W-Cut™ design is available on all GRK screws, 30mm and longer.

GRK's ZipTip™ is designed for fast starts in any fibrous materials.