4603 Series High-Speed Steel Single-End Countersink, Uncoated (Bright) Finish, Single Flute, 82 Degrees, 1/4" Shank Dia., 1/2" Body Dia.

The Union Butterfield 4603 series high-speed steel single-end countersink with an uncoated (bright) finish creates an 82-degree conical opening that accepts a flat-head fastener so it sits flush with the surface. The single flute quickly cuts through material and has reduced vibration at higher speeds compared to multiple flutes. It is suitable for cutting small holes. High-speed steel (HSS) provides hardness for wear resistance. The uncoated finish has no additional surface treatment or coating. The tool has a single cutting end and a round shank that accommodates most drill chucks.Countersinks are fluted cutting tools that cut a conical or gradually widened opening for a hole into the surface of a workpiece, which provides a seat for a screw or rivet head. They are also used to create center holes for a machine center, deburr surfaces, and enlarging existing holes. The countersink's body diameter should be the same size or larger than what is being countersunk.Dormer Pramet manufactures cutting tools under the following brands: Precision Twist Drill, Dormer, Union Butterfield and Pramet. The company has locations around the world, and provides tools adhering to ANSI, NAS, and DIN standards.

• Creates an 82-degree countersink that accepts a flat-head fastener so it sits flush with the surface
• Single flute cuts quickly and reduces vibration compared to multiple flutes
• High-speed steel (HSS) provides hardness for wear resistance
• Uncoated (bright) finish has no additional surface treatment or coating
• Single-ended tool has a round shank that accommodates most drill chucks