Black oxide finish reduces wear while promoting chip and coolant flow 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. Chicago Latrobe Tool Chicago Latrobe 209SF High-Speed Steel Countersink, Ghana High-speed Steel HSS Black Oxide It is suitable for cutting small holes. Creates a 90-degree countersink that accepts a flat-head fastener so it sits flush with the surface. Black oxide finish reduces wear while promoting chip and coolant flow. High-speed steel (HSS) provides hardness for wear resistance when cutting alloy steel, tool steel, and cast iron The countersink's body diameter should be the same size or larger than what is being countersunk. The tool has a single cutting end and a round shank that accommodates most drill chucks. Single flute cuts quickly and reduces vibration compared to multiple flutes They are also used to create center holes for a machine center, deburr surfaces, and enlarging existing holes. The black oxide finish reduces wear while promoting chip and coolant flow. 1-1/4 60 DEGREE HIGH SPEED STEEL SINGLE FLUTE COUNTERSINK 1/2 SHANK 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. Designed to countersink, chamfer, deburr, and enlarge holes in sheet metal. Use single flute countersinks in holes too small for multi-flute countersinks. Use multi-flute countersinks in much larger size holes. Manufactured from premium high-speed steel. Black finish with bright point. Application Chicago-Latrobe manufactures drill bits and accessories, reamers, countersinks, and blanks.
