GRK RT Composite Exterior Trim Screws

GRK Fasteners has modified its innovative FIN/Trim™ Head screw to include reverse threading under the head of the fastener. This combination makes the RT Composite Trim Screw the ideal solution for a composite and cellular PVC trim fastener.

  • Interior / Exterior Use: No stripping due to six points of contact
  • Recessed Star Drive: Eliminates any change of mushrooming
  • Trim Head: Presents a clean, finished look
  • W-Cut™: Low torque created a smoother drive
  • Zip-Tip™: No pre-drilling required means faster penetration
  • ESR-3201: Approved for structural application
  • Case Hardened Steel: Creates high tensile, torque and shear strength
  • Climatek™ Coating is AC257 code approved for use in treated lumber
  • For use in exterior PVC trim (Azek, Kleer, Koma) with no pre-drilling required. Climatek™ coated fasteners work well with CAMO system. Also great for use in interior applications.
  • Available in Climatek™ or white powder coated finish.
  • Also available in PHEINOX™ 305 grade Stainless Steel

Based on extensive tests, data shows that the reverse thread in GRK Fasteners' RT Composite™ screws help the head disappear beneath the surface of classic wood composite material, eliminating reducing the dimple that can occur when using FIN/Trim™ screws.

RT Composite™ screws that measure 2" to 3-1/8" in length offer the reverse thread feature, and are available in both regular Climatek™ coating and in white powder coated finish, perfect for blending into popular white exterior cellular PVC and composite trim.


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