3/8" Countersinks | McMaster-Carr

Filter by

Screw Size

For Use On

Stainless Steel

Countersink Angle

Sold As

Number of Flutes

Body Diameter

Hole Diameter

Shank Type

Pilot Diameter

Number of Countersinking Ends

Container Type

Number of Pieces

Shank Diameter

Overall Length

Drill Tip Diameter

For Cutting

Material

Carbide-Tipped Steel

Finish

Titanium Nitride (TiN) Coated

Countersink Type

System of Measurement

Shank Material

Export Control Classification Number (ECCN)

REACH

RoHS

Compliant with Exemptions

DFARS Specialty Metals

Flute Type

How can we improve?

28 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

Countersink Drill Bits

Countersink Drill Bits

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

Counterbore Drill Bits

Counterbore Drill Bits

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

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