82° Countersinks | McMaster-Carr

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Aluminum Titanium Nitride (AlTiN) Coated

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EAR99

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DFARS Specialty Metals

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For Cutting

580 Products

About Countersinks

Choose the right countersink angle, body diameter, and number of flutes for your application.

Countersinks

For Cutting Screw Holes

Countersinks for Screws

Cut a cone-shaped opening in a hole to install your flat-head screw flush with the surface

266 products

Smooth-Finish Countersinks for Screws

Make smooth, uniform cuts without stopping to clear chips

9 products

Fluteless Smooth-Finish Countersinks for Screws

The hollow body minimizes vibration while lifting chips out of the hole for a smooth, accurate finish

14 products

Fluteless Smooth-Finish Countersinks with Pilot for Screws

The pilot guides the cutting edge straight into the hole for an accurate cut on the first try

5 products

Precise-Cutting Countersinks for Screws

Cut to ultratight tolerances when accuracy is critical

12 products

Drill-Point Countersinks for Screws

Drill and countersink a pilot hole without changing tools

18 products

Long-Reach Countersinks for Screws

Cut from around twice the distance of our standard countersinks

18 products

Two-Piece Long-Reach Countersinks for Screws

Create a custom-length countersink for access to hard-to-reach holes

5 products

Carbide-Insert Countersinks for Screws

Replace dull blades to countersink hundreds of holes with the same tool

8 products

Reverse Countersinks for Screws

If an obstruction blocks the hole, countersink from the reverse side instead

14 products

Countersinks with Two Countersinking Ends for Screws

When one end starts to wear, flip the tool around for a fresh cutting edge

23 products

Fluteless Smooth-Finish Countersinks with Two Countersinking Ends for Screws

When one end starts to wear, flip the tool around for a fresh cutting edge

2 products

Drill-Point Countersinks with Two Countersinking Ends for Screws

When one end starts to wear, flip the tool around for a fresh cutting edge

8 products

Drill-Bit Countersinks for Wood and Plastic

Drill and countersink holes of different depths without changing tools

44 products

Quick-Change Hex Drill-Bit Countersinks for Wood and Plastic

Pop into a hand-driven tool to drill and countersink a hole in a single step

10 products

Countersink Sets for Screws

Cut cone-shaped recesses for a range of screw-head diameters

17 products

Smooth-Finish Countersink Sets for Screws

Make smooth, uniform cuts without stopping to clear chips

1 product

Fluteless Smooth-Finish Countersink Sets for Screws

The hollow body minimizes vibration while lifting chips out of the hole for a smooth, accurate finish

1 product

Fluteless Smooth-Finish Countersink Sets with Pilot for Screws

The pilot guides the cutting edge straight into the hole for an accurate cut on the first try

1 product

Drill-Bit Countersink Sets for Wood and Plastic

Drill and countersink holes of different depths without changing tools

4 products

Other Products

Center Drills

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

86 products

Countersink Drill Bits

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

8 products

Drill/Screwdriver Bits

Quickly change between drilling countersunk holes and driving screws

6 products