Drill-Bit Countersinks | McMaster-Carr

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Countersink Angle

For Use On

Stainless Steel

System of Measurement

Body Diameter

Number of Flutes

Screw Size

Shank Diameter

Material

Carbide-Tipped Steel

Overall Length

Sold As

Shank Type

Quick-Change Hex

Finish

Aluminum Titanium Nitride (AlTiN) Coated

Titanium Aluminum Nitride (TiAlN) Coated

Titanium Carbon Nitride (TiCN) Coated

Titanium Nitride (TiN) Coated

Drill Bit Size

Shank Material

Hole Diameter

1/16" to 15/64"

3/32" to 15/64"

5/32" to 13/32"

3/16" to 13/32"

3/16" to 17/32"

13/64" to 27/64"

Center Drill Trade Size

Number of Countersinking Ends

For Cutting

Lathe Center Holes

Length

Export Control Classification Number (ECCN)

RoHS

Compliant with Exemptions

DFARS Specialty Metals

REACH

Countersink Type

Drill Tip Diameter

Pilot Diameter

How can we improve?

2,621 Products

Fabricating and Machining

Countersinks

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

Countersink Extensions

Countersink Extensions

Lengthen the reach of threaded-shank countersinks

Center Drills

Drill cone-shaped openings to mate with lathe centers or start pilot holes for screws

Counterbores

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

Counterbore Insert Holders

Counterbore Insert Holders

Pair with inserts to create flat-bottom holes

Countersunk Hole Repair Tools

Countersunk Hole Repair Tools

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

Countersink Drill Bits

Countersink Drill Bits

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

Drill/Screwdriver Bits

Drill/Screwdriver Bits

Quickly change between drilling countersunk holes and driving screws

Counterbore Drill Bits

Counterbore Drill Bits

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

Burs

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

The quick brown fox jumped over the lazy dog. Pedestal (35" Ht. x 4" Wd. x 4" Dp.)