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Countersinks

123 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.
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Fast-Cut High-Speed Steel 1-Flute Countersinks

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

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82 ° Included Angle

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90 ° Included Angle

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100 ° Included Angle

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110 ° Included Angle

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120 ° Included Angle

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General Purpose High-Speed Steel 3-Flute Countersinks

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

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82 ° Included Angle

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90 ° Included Angle

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100 ° Included Angle

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110 ° Included Angle

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120 ° Included Angle

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Anti-vibration Cobalt Steel Zero-Flute Countersinks

Anti-vibration Cobalt Steel Zero-Flute Countersinks
Cobalt steel zero-flute countersinks provide good wear resistance when machining hard materials at high speeds. Zero-flute countersinks have a single flute that passes through the center of the countersink. This minimizes vibration and chatter during use and prevents chips from sticking to the tool. Zero-flute countersinks leave smooth, clean edges on holes and are used to expand the top of an existing hole in a workpiece to ensure screws install flush with the surface of the workpiece. They are commonly used for installing aluminum frame storefronts, glass and window design, and architectural metalworking applications.

60 ° Included Angle

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82 ° Included Angle

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90 ° Included Angle

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100 ° Included Angle

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General Purpose High-Speed Steel 4-Flute Countersinks

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

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82 ° Included Angle

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90 ° Included Angle

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100 ° Included Angle

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