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Sign In Register Forgot User ID? Forgot Password?Countersinks
684 products
Countersinks expand the top of an existing hole in a workpiece to ensure screws install flush with the surface of the workpiece. This helps prevent the workpiece material from swelling when a screw is installed in the hole and tightened down in metalworking applications. Countersinks can also be used to debur holes for a smooth finish.
Material - Machining
Fast-Cut High-Speed Steel 1-Flute Countersinks
High-speed steel countersinks provide good wear resistance in a wide range of countersinking applications. Single-flute countersinks are suitable for use at high speeds. They leave clean edges on holes and have a high, positive rake that reduces vibration as they expand the top of an existing hole in a workpiece to ensure screws install flush with the surface of the workpiece.
60 ° Included Angle
82 ° Included Angle
90 ° Included Angle
100 ° Included Angle
110 ° Included Angle
120 ° Included Angle
Smooth-Finish High-Speed Steel 6-Flute Countersinks
High-speed steel countersinks provide good wear resistance in a wide range of countersinking applications. Six-flute countersinks provide fast material removal and leave a smooth finish as they expand the top of an existing hole in a workpiece to ensure screws install flush with the surface of the workpiece. They remove more material with each revolution and typically provide more wear resistance than countersinks with fewer flutes.
60 ° Included Angle
82 ° Included Angle
90 ° Included Angle
100 ° Included Angle
110 ° Included Angle
120 ° Included Angle
General Purpose High-Speed Steel 3-Flute Countersinks
High-speed steel countersinks provide good wear resistance in a wide range of countersinking applications. General purpose 3-flute countersinks are the most commonly used type of countersink. They expand the top of an existing hole in a range of materials to ensure screws install flush with the surface of the workpiece. Three-flute countersinks typically provide better chip clearance and perform better when machining stringy materials than countersinks with more flutes.
60 ° Included Angle
82 ° Included Angle
90 ° Included Angle
100 ° Included Angle
110 ° Included Angle
120 ° Included Angle
General Purpose High-Speed Steel 4-Flute Countersinks
High-speed steel countersinks offer good wear resistance in a wide range of countersinking applications. General purpose 4-flute countersinks expand the top of an existing hole in a workpiece to ensure screws install flush with the surface of the workpiece. Four-flute countersinks typically provide more wear resistance than countersinks with fewer flutes.
60 ° Included Angle
82 ° Included Angle
90 ° Included Angle
100 ° Included Angle
High-Speed Steel 4-Flute Machine Countersinks
High-speed steel countersinks provide good wear resistance in a wide range of countersinking applications. Also known as machine countersinks, 4-flute countersinks have a long shaft that allows them to be used in lathes, screw machines, and CNC machines. They expand the top of an existing hole in a workpiece to ensure screws install flush with the surface of the workpiece. 4-flute countersinks typically provide more wear resistance than countersinks with fewer flutes.
60 ° Included Angle
82 ° Included Angle
90 ° Included Angle
Threaded Shank 3-Flute Countersinks
These countersinks have a threaded shank that keeps them securely attached to a compatible handheld electric or pneumatic power tool during use. This helps ensure the countersink will not fall off the tool when it's being used in hard-to-reach areas. Countersinks are used to expand the top of an existing hole in a workpiece to ensure screws install flush with the surface of the workpiece. These countersinks can also be used to debur holes.