RT (Reverse Thread) Composite™ Trim Head Screws by GRK Fasteners
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 2 inch to 3-1/8 inch.
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. (Always consult wood supplier's / manufacturer's recommendations)
RT Composite™ Trim Head screws come with 1200+ salt spray hours Climatek corrosion protection. This will come in very handy when using our Trim screws in composite decking.
FOR BEST RESULTS, TRIM SCREWS SHOULD BE DRIVEN AT HALF SPEED.
Reverse Thread (RT) Trim Head Screws by GRK Fasteners At-A-Glance:
Works with composite decking, wood decking, window jambs, door jambs and all rim applications
Strong heads and Star head recess
Reverse Thread (RT)
Most composite decks
GRK RT Trim Head Screw Brochure (446 KB)
GRK Limited Lifetime Warranty (85 KB)
|Screw Length||2 in, 2-1/2 in, and 3-1/8 in|
|Material Type||Climatek (gold)|
|Pack Size||2 in: 725 pieces (pro pack)|
2-1/2 in: 605 pieces (pro pack) & 3,500 pieces (bulk pack)
3-1/8 in: 514 pieces (pro pack) & 2,500 pieces (bulk pack)
|Coverage Estimate||12 in OC (100 sq ft): 464 screws|
16 in OC (100 sq ft): 348 screws
|Included Accessories||514 Pro Pack, 605 Pro Pack, and 725 Pro Pack: (1) #10 starhead bit|
2500 Bulk Pack and 3500 Bulk Pack: none - Starhead bit sold separately
|Warranty||View GRK Warranty Information|
|Other||For best results, screws should be driven at half speed|