Attention Zoro Customers! In observance of Memorial Day, all Zoro offices including customer service will be closed on Monday, May 28. We will resume normal business hours on Tuesday, May 29 at 6:00 a.m. CT. You can continue to place orders online, 24 hours a day, on We hope you have a fun and safe Memorial Day!

Countersink, 1 FL, 90 Deg, 3/8, HSS, Uncoated

KEO| Zoro #: G2245774| Mfr #: 53389

$10.84 /ea

Orders over $50.00 ship free. Details.Standard ground shipping.
Overall Length (In.): 1-3/4Body Dia. (In.): 3/8Cutting Capacity (In.): -
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Zoro #: G2245774 Mfr #: 53389
Overall Length (In.): 1-3/4Body Dia. (In.): 3/8
Cutting Capacity (In.): -Material: High Speed Steel
Shank Length (In.): 7/8Sizes Included: -
Item: CountersinkIncluded Angle (Deg.): 90
Shank Dia. (In.): 1/4Number of Flutes: 1
Pilot Length (In.): -Finish: Uncoated
Type: Single EndedApplication: Heavy Duty For Aluminum, Alloy, Carbon And Tool Steels And Non-Metallics Where Finish Is Not A Priority
Number of Pieces: 1Pilot Dia. (In.): -
Country of Origin (subject to change): United States


  • The versatility of this tool should increase productivity on all general purpose applications.
  • The large positive rake and single flute construction provides a smooth surface finish on a wide variety of materials.
  • KEO single flute countersinks are ideal for chamfering, deburring and countersinking.