FRAMING SCREW 10 X 3 1/8 IN GOLD Leather Brothers The segmented carbide grout blade

The segmented carbide grout blade has a cutting width of 5/64' and 1/2' depth

High carbon steel

The CEE thread also reduces the friction on the screw shank which can result in lowering the driving torque and the likelihood of splitting the wood

and many more

Subsequently

FRAMING SCREW 10 X 3 1/8 IN GOLD Leather Brothers The segmented carbide grout bladeRKs R2 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.