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About Counterbores
Create flat-bottomed holes, so your screw heads sit flush, recessed, or slightly raised.
Oversized Counterbores
Designed to give screw heads a slightly loose fit, these counterbores are a bit wider than standard sizes. The extra clearance prevents binding and leaves room for a seal or O-ring around the screw head.
High-Speed Steel
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Durable and wear resistant, these counterbores make accurate cuts in most materials without chipping or cracking.
Pilot | Shank | Uncoated | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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For Screw Size | Body Dia., mm | Dia., mm | Lg. | Overall Lg. | Dia. | Type | No. of Flutes | Each | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
0.5 mm Oversize | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
M10 | 16.5 | 10.5 | 0.500" | 7" | 1/2" | Round | 4 | 0000000 | 000000 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Oversized Counterbore Sets
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Designed to give screw heads a slightly loose fit, these counterbores are a bit wider than standard sizes. The extra clearance prevents binding and leaves room for a seal or O-ring around the screw head.
High-Speed Steel—Durable and wear resistant, these counterbores make accurate cuts in most materials without chipping or cracking.
For Screw Size | No. of Pieces | Oversize Amount, mm | Shank Type | No. of Flutes | Each | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Uncoated High-Speed Steel | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
M3, M4, M5, M6, M8, M10, M12, M14 | 8 | 0.5 | Round | 4 | 0000000 | 0000000 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Drill-Point Counterbores
Skip a step when installing screws in metal. With a sharp point on the tip, these counterbores drill a pilot hole topped with a flat recess for the screw head. That's faster and more accurate than switching to a counterbore in between passes with your drill bit.
High-Speed Steel
![]() |
Durable and wear resistant, these counterbores make accurate cuts in most materials without chipping or cracking.
Shank | Uncoated | |||||||||
---|---|---|---|---|---|---|---|---|---|---|
For Screw Size | Body Dia., mm | Overall Lg. | Dia. | Type | No. of Flutes | Max. Hole Drilling Dp., mm | Each | |||
M10 | 16.6 | 2 1/16" | 1/2" | Round | 2 | 14.29 | 00000000 | 000000 | ||
Drill-Point Counterbore Sets
![]() |
Skip a step when installing screws of various thread diameters in metal. With a sharp point on the tip, these counterbores drill a pilot hole topped with a flat recess for the screw head. That's faster and more accurate than switching to a counterbore in between passes with your drill bit.
High-Speed Steel—Durable and wear resistant, these counterbores make accurate cuts in most materials without chipping or cracking.
For Screw Size | No. of Pieces | Shank Type | No. of Flutes | Container Type | Each | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Uncoated High-Speed Steel | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
M3, M4, M5, M6, M8, M10, M12, M14, M16 | 9 | Round | 2 | Plastic Case | 00000000 | 0000000 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||