Counterbores
A counterbore is a cylindrical flat-bottomed hole that enlarges another coaxial hole, or the tool used to create that feature. A counterbore hole is typically used when a fastener, such as a socket head cap screw, is required to sit flush with or below the level of a work piece's surface.
Whereas a counterbore is a flat-bottomed enlargement of a smaller coaxial hole, a countersink is a conical enlargement of such. A spot-face often takes the form of a very shallow counterbore.
As mentioned above, the cutters that produce counterbores are often also called counterbores; sometimes, to avoid ambiguity, the term counterbore cutter is used instead.
Whereas a counterbore is a flat-bottomed enlargement of a smaller coaxial hole, a countersink is a conical enlargement of such. A spot-face often takes the form of a very shallow counterbore.
As mentioned above, the cutters that produce counterbores are often also called counterbores; sometimes, to avoid ambiguity, the term counterbore cutter is used instead.
- Counterbores w/ Interchangeable Pilots Aircraft long length
- Interchangeable Pilots for Counterbores 1/8 to 2 Inch Diameter, 3/32 to 1/2 Hole Size
- Interchangeable Pilots for Counterbores Aircraft Short Length 0.250 1/4 to 1 Inch
- Straight Shank Counterbores - Interchangeable Pilot
- Cap Screw Counterbores
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