To remove the need for a starter hole, the drill point is incorporated into the countersink flutes.

For general purpose use.

For excellent performance on hard and abrasive materials, these carbide countersinks are harder, stronger, and more wear resistant than cobalt steel and high-speed steel countersinks.

Carbide is harder, stronger, and more wear resistant than high-speed steel for excellent performance on hard and abrasive materials.

For use on hard-to-machine materials, these countersinks are cobalt steel for better heat and abrasion resistance than high-speed steel.

Carbide is harder, stronger, and more wear resistant than cobalt steel and high-speed steel for better performance on hard and abrasive materials.

For applications where the workpiece will go through several machining processes, these countersinks bevel the outer edges of the hole and provide an additional 120° chamfer to prevent damage to the center hole.

Use on plastic and most metals.

Also called subland drill bits. The 90° countersink angle guides the tap into the hole.