Chicago Latrobe 209SF High-Speed Steel Countersink, Black Oxide Finish, Single Flute, 90 Degrees, Round Shank, 3/8" Shank Dia., 3/4" Body Dia.

The Chicago Latrobe 209SF series high-speed steel single-end countersink with a black oxide finish creates a 90-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 when cutting alloy steel, tool steel, and cast iron. The black oxide finish reduces wear while promoting chip and coolant flow. 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.Chicago-Latrobe manufactures drill bits and accessories, reamers, countersinks, and blanks. The company, founded in 1890 and headquartered in Clemson, SC, meets International Organization for Standardization (ISO) standard 9001.

• Creates a 90-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 when cutting alloy steel, tool steel, and cast iron
• Black oxide finish reduces wear while promoting chip and coolant flow
• Single-ended tool has a round shank that accommodates most drill chucks