Countersink Tools | McMaster-Carr

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Finish

Aluminum Titanium Nitride (AlTiN) Coated

Black Oxide

Carbide Tipped

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Titanium Aluminum Nitride (TiAlN) Coated

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Number of Countersinking Ends

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Export Control Classification Number (ECCN)

EAR99

DFARS Specialty Metals

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RoHS

Compliant

Compliant with Exemptions

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REACH

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Countersink Trade Size

Drill Tip Diameter

Pilot Diameter

Flute Type

Body Diameters Included

Number of Pieces

2,631 Products

Fabricating and Machining

Countersinks

Cut a cone-shaped opening in a hole to install flat-head screws and rivets flush with the surface

1,704 products

Countersink Extensions

Lengthen the reach of threaded-shank countersinks

3 products

Counterbores

Enlarge the top of a hole to install socket and hex head screws flush with the surface

420 products

Center Drills

Drill cone-shaped openings in workpieces to mount them between centers on your lathe

359 products

Countersunk Hole Repair Tools

Lightly shear off material to repair and clean out holes for machining between centers

6 products

Deburring Tools

Changeable or fixed cutting blades shave rough edges from surfaces, holes, and pipe

3 products

Burs

Cut excess material to smooth surfaces and holes using a rotary power tool like a die grinder

44 products

Countersink Drill Bits

A single bit drills and creates an angled surface so oval and flat screw heads sit flush

17 products

Drill/Screwdriver Bits

Quickly change between drilling countersunk holes and driving screws

3 products

Counterbore Drill Bits

A single bit drills and creates a flat surface for the head of a socket head cap screw

23 products

Measuring and Inspecting

Countersink Gauges

Catch sizing errors in countersunk holes to keep fasteners from protruding and creating weak points

24 products