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.