Pop these countersinks into power drills, screwdrivers, and other tools that accept 1/4" hex shanks. Tools grip their hex shanks more securely than round shanks to tackle jobs that require higher torque.

More heat and abrasion resistant than high-speed steel, cobalt steel has better performance on hard-to-machine materials.

Specially designed spiral flutes reduce chip buildup on the cutting edge, so these countersinks produce a clean, smooth finish on your material.

More heat and abrasion resistant than high-speed steel for better performance on hard-to-machine materials.

To create a clean, smooth finish on your material, these countersinks have specially designed spiral flutes that reduce chip buildup on the cutting edge.

These countersinks have an angled hole that passes through the center of the tool to reduce vibration and chatter for creating smooth cuts and preventing chips from clogging the tool.

When one end dulls, turn the countersink around to use the other end. An angled hole passes through the center of the countersink to reduce vibration and chatter, which creates smooth cuts and prevents chips from clogging the tool.

These highly accurate countersinks have a tolerance of 0" to +0.001", so you can use them with computer-controlled machines.

An 82° countersink angle is compatible with the profile of flat- and oval-head inch screws; a 90° countersink angle is compatible with the profile of flat- and oval-head metric screws and is also good for deburring.

The 100° countersink angle is compatible with the profile of rivets.

The 82° countersink angle is compatible with the profile of flat- and oval-head inch screws.

For general purpose use.

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

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.

No need to create a starter hole—the drill point is incorporated into the countersink flutes.

Use on plastic and most metals.

Also known as step drill bits. The 82° countersink angle is compatible with the profile of flat- and oval-head inch screws.

Use in general purpose applications.

For a clean, smooth finish on your material, these countersinks have specially designed spiral flutes that reduce chip buildup on the cutting edge.

For general purpose use.

To create a smooth, clean finish on your material, these countersinks have specially designed spiral flutes that reduce chip buildup on the cutting edge.

An angled hole passes through the center of the countersinks in these sets to reduce vibration and chatter, which creates clean cuts and prevents chips from clogging the tool.

The 60° countersink angle is compatible with the profile of centers on a lathe.

Use in general purpose applications.

With more heat and abrasion resistance than high-speed steel, cobalt steel is often used on hard-to-machine materials.

For use with most metals in addition to plastic and wood.

Counterbore screw holes in misaligned sheets or layers of material.

Designed for counterboring screw holes in misaligned sheets or layers of material.

Use these counterbores with screw holes in misaligned sheets or layers of material.

Create contoured profiles for installing hydraulic ports in accordance with military and SAE specifications.

This counterbore has a set screw that lets you adjust the blades to counterbore multiple diameters with the same tool.

For general purpose applications.

For excellent performance on abrasive materials such as cast iron and nonferrous metals, these counterbores are C2 carbide-tipped alloy steel.

Drill and counterbore holes with enough clearance for socket head screws without changing tools.

For jobbers’ and brad-point drill bits.

Often called step drill bits.