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GRK FASTENERS™ R4™ 01101 Multi-Purpose Framing Screw, #9 Thread, CEE Thread, Star Drive, T25 Drive, 2-1/2 in OAL, Steel
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GRK's R4 self-countersinking screw has a patented underhead with saw blade like cutting teeth and six self-contained cutting pockets. Together they act similar to 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 head of the screw closes the hole off with precision, leaving no damaged fibers around the head. R4 screws 2 in and longer have a four threaded CEE thread. This enlarges the screw hole for the non-threaded portion of the fastener, allowing the wood to settle easily. It increases the screw's drawing strength and reduces the friction on the screw shank that lowers the driving torque.
Features:
- Recessed star drive: zero stripping, with 6 points of contact
- CEE thread enlarges hole to reduce splitting, install torque
- W-Cut™ - low torque, smoother drive, reduce splitting
- Zip-Tip™ - no pre-drilling, faster penetration, reduce splitting
- Cutting pockets provide a clean hole, reduces splitting and bore with precision
- Case hardened steel for high tensile, torque and shear strength
- Climatek™ coating is AC257 code approved for use in treated lumber
Standard Approvals:
ICC ESR-3201
Application:
For interior or exterior use in wood, plastic, cement fiber board, particle board, sheet metal, wood decking and melamine
Includes:
Driver Bits
Country:
Limited
Other Attributes:
- SKU: 5914130
- Material: Steel
- Drive Size: T25
- Overall Length: 2-1/2in
- Thread Size: #9
- Thread Type: CEE
- Head Type: Self-Countersinking
- Drive Type: Star
- Finish: Climatek™-Coated
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