R4 self-countersinking screw has a new under head with saw-blade like 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.
Features - Self-tapping, countersinking head
- W-Cut thread design
- Climatek coated for all weather corrosion protection
- For use in wood, particle-board, cement fiberboard, plastic, and sheet metal
Specifications - Size: 9" x 2.75"
- Country of Origin: Taiwan
- Weight: 11.1 lbs
- SKU: ZX9ORGL150216
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