43012 – 3/16 x 1/2″ Countersink

Drill a pilot hole or clearance hole and countersink or counterbore for standard screws. Drive Shank: 1/4″ Hex Power Bit Shank Drill Size: 3/16″ Ø HSS Twist Drill Counterbore Size: 1/2″ x 82° Recommended Screw Size: Clearance Hole for #9 & #10 Screw, Clearance Hole for #10 Machine Screw -Works with our Premium Rotating Stop Collar!