Filter by
Screw Size
Body Diameter
Pilot Diameter
Pilot Length
Flute Type
Number of Flutes
Shank Type
Shank Diameter
Finish
Material
Counterbore Type
DFARS Specialty Metals
Export Control Classification Number (ECCN)
Overall Length
Pilot Type
REACH
RoHS
Oversize Amount
Tolerance Rating
Sold As
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
 |
Durable and wear resistant, these counterbores make accurate cuts in most materials without chipping or cracking.
Pilot | Shank | Uncoated | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
For Screw Size | Body Dia., mm | Dia., mm | Lg. | Overall Lg. | Dia. | Type | No. of Flutes | Each | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
0.5 mm Oversize | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| M20 | 30.5 | 20.5 | 0.750" | 8 1/8" | 7/8" | Round | 4 | 0000000 | 0000000 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
EachDelivers Monday  | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
