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East Coast Lumber & Building Supply, LLC
GRK 10x3-1/8" R4 SCREW 350ct
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GRK #10 x 3-1/8" R4 Multi-Purpose Framing Screw
See a video of the R4 Multi-Purpose Framing Screw in action!
Interior / Exterior Use:
> No Pre-Drilling Unless Material Requires
> Self Countersinking
>Starhead Recess / Non Stripping Heads
> Can Be Used With Fibrous Materials
> Extreme Threads
GRK's R4 self-countersinking screw has a patented underhead with saw-blade like patented cutting teeth and six self-contained cutting pockets. Together these features act like a circular saw blade, transporting the "drill dust" away from the edge of the screw hole while cutting a perfectly clean hole into even the most brittle materials without cracking any surface treatment. This design enhances the R4's versatility by allowing the fastener to countersink into even the hardest woods. The screw head closes the hole off with precision, not leaving any damaged fibers around the head.
R4 screws which are 2" and longer have a four threaded CEE thread that enlarges the screw hole for the non-threaded portion of the fastener. This technological advancement allows the wood to settle easily and increases the screw's drawing strength, reducing the friction on the screw shank and lowering the driving torque. The R4 is a multi-purpose screw that can be used in all woodworking and plastic applications.
GRK Fasteners R4 Pro Pack
- U/M
- / EA
- Price
- $59.99
- Part Number
- R410318PP
- UPC
- 772691011374
- Quantity Available
- 102
