#10 x 3-1/2" R4 Multi-Purpose Framing Screw (300/Pack)
GRK’s R4™ self-countersinking screw has a patented underhead with sawblade like cutting teeth and six self-contained cutting pockets. Together they act similar to a circular sawblade, 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.
•   Zero stripping with 6 points of contact
•   Enlarges hole to reduce splitting
•   Low torque, smoother drive, reduced splitting
•   No pre-drilling, faster penetration
#10 x 3-1/2" R4 Multi-Purpose Framing Screw (300/Pack)
GRK’s R4™ self-countersinking screw has a patented underhead with sawblade like cutting teeth and six self-contained cutting pockets. Together they act similar to a circular sawblade, 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.
•   Zero stripping with 6 points of contact
•   Enlarges hole to reduce splitting
•   Low torque, smoother drive, reduced splitting
•   No pre-drilling, faster penetration
Product Information
Product Information
Shipping & Returns
Shipping & Returns
Description
GRK’s R4™ self-countersinking screw has a patented underhead with sawblade like cutting teeth and six self-contained cutting pockets. Together they act similar to a circular sawblade, 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.
•   Zero stripping with 6 points of contact
•   Enlarges hole to reduce splitting
•   Low torque, smoother drive, reduced splitting
•   No pre-drilling, faster penetration
