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Center Drills

Center Drills

These center drills combine a small pilot drill and countersink to find the center of a piece of stock and create a recess for a live- and dead-center tail-stock center on a lathe. They drill a small pilot hole then expand the hole using the countersink, leaving a small gap at the bottom of the hole that helps protect live and dead centers from damage. While a center drill can drill a hole similar to a spot drill, a spot drill is stiffer and is available with different angles for use with a variety of drill bit angles.

Plain Tip

Center drills with a plain tip are the standard choice for creating center holes in workpieces to prepare them for turning between centers.

Bright (Uncoated) — High Speed Steel

60 ° — Right Hand Cut

82 ° — Right Hand Cut

90 ° — Right Hand Cut

Long Life TiN — High Speed Steel

60 ° — Right Hand Cut

82 ° — Right Hand Cut

90 ° — Right Hand Cut

Bright (Uncoated) — Cobalt Steel

60 ° — Right Hand Cut

Bright (Uncoated) — Carbide

60 ° — Right Hand Cut

82 ° — Right Hand Cut

90 ° — Right Hand Cut

Extended-Length with Plain Tip

Access hard-to-reach workpieces with these extra long center drills. They have a plain tip, which is the standard choice for creating center holes in workpieces to prepare them for turning between centers.

Bright (Uncoated) — High Speed Steel

60 ° — Right Hand Cut

82 ° — Right Hand Cut

Long Life TiN — High Speed Steel

60 ° — Right Hand Cut

Bell Tip

An additional 120° chamfer on these bell-tip center drills helps protect the center hole from damage during machining applications.

Super Life TiAlN — High Speed Steel

60 ° — Right Hand Cut

Bright (Uncoated) — High Speed Steel

60 ° — Right Hand Cut

Bright (Uncoated) — Carbide

60 ° — Right Hand Cut

Radius Tip

The tapered flute on these radius-tip center drills provides greater hole accuracy than plain-tip center drills for countersink milling in high-precision applications.

Bright (Uncoated) — High Speed Steel

60 ° — Right Hand Cut

Jig Bore Type

Commonly known as jig borers, these center drills have a flat on the shank for securing the drill to a jig borer machine with a set screw.

Bright (Uncoated) — High Speed Steel

60 ° — Right Hand Cut

Sets

These sets include multiple center drills in different sizes for tackling a range of drilling applications.

Bright (Uncoated) — High Speed Steel

60 ° — Plain with Right Hand Cut

120 ° — Bell with Right Hand Cut

Long Life TiN — High Speed Steel

60 ° — Plain with Right Hand Cut

Bright (Uncoated) — Cobalt Steel

60 ° — Plain with Right Hand Cut

Bright (Uncoated) — Carbide

60 ° — Plain with Right Hand Cut