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GRK FASTENERS™ R4™ 01073 Multi-Purpose Framing and Decking Screw, 6-Point Star Drive, #8 Drive, 1-1/2 in OAL
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GRK FASTENERS™ R4™ self-countersinking screw has a patented under head 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™ 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 3-1/8 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:
- Fast bite tip - eliminates pre-drilling and provides a fast start for one-step installation
- W-Cut™ - low torque, faster drive
- Precision fit - reduces wobble between R4™ screws and GRK FASTENERS™ bits for improved productivity
- Star drive - zero stripping, with six-points of contact
- Optimized thread length - improves clamping force for increased drawing power
- Cutting teeth - cuts wood fiber and provides flush seating
- GRK FASTENERS™ head markings - easy identification of genuine GRK FASTENERS™ screws
- Climatek™ coating is AC257 code approved for use in treated lumber
Standard Approvals:
AC257|ESR 3201
Application:
Cement, Exterior, Fiber Board, Interior, Melamine, Particle Board, Plastic, Sheet Metal, Structural, Wood and Wood Decking Applications
Other Attributes:
- SKU: 5914247
- Drive Size: #8
- Overall Length: 1-1/2in
- Drive Type: 6-Point Star
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