Piloted Countersinks | McMaster-Carr

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For Use On

Stainless Steel

Screw Size

Countersink Angle

Pilot Diameter

Hole Diameter

5/16" to 41/64"

7/16" to 53/64"

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Number of Flutes

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Shank Diameter

Shank Diameters Included

Number of Pieces

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Carbide-Tipped Steel

Overall Length

Finish

Aluminum Titanium Nitride (AlTiN) Coated

Titanium Aluminum Nitride (TiAlN) Coated

Titanium Carbon Nitride (TiCN) Coated

Titanium Nitride (TiN) Coated

Center Drill Trade Size

Flute Type

RoHS

Compliant with Exemptions

Export Control Classification Number (ECCN)

REACH

DFARS Specialty Metals

Pilot Head Diameter

Shank Material

Number of Countersinking Ends

Tolerance Rating

Thread Size

How can we improve?

202 Products

Fabricating and Machining

Countersinks

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

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

Counterbore Inserts

Counterbore Inserts

Pair with holders to create flat-bottom holes and replace when worn to reduce waste

Center Drills

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

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