GRK 137147 R4#10 by 3-1/8-inch PHEINOX 316SS Marine Grade Fasteners Handy Pak, (70 per Pack)
GRK R4 Stainless Steel self-countersinking screw has a new 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 also further enhances the R4's versatility by allowing the fastener to be installed without countersinking into even the hardest woods. The screw head closes the hole off with precision, leaving no damaged fibers around the head. Applications include wood, particle board, plastic, sheet metal, cement fiberboard, composite decking, wood decking and melamine.
Features
- Uses GRK T25 bit
- Self-tapping, countersinking head
- 316 Stainless Steel for the ultimate performance in all seaside construction
- W-cut thread design
- For use in wood, particle-board, cement fiberboard, plastic, wood decking, melamine and sheet metal
USA SHIPPING
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