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Align counterbores in the center of drilled holes. Choose from our selection of counterbore tools, including inch size high-speed steel counterbores, oversized high-speed steel counterbores, and more. In stock and ready to ship.
Choose from our selection of counterbore drills, including inch size high-speed steel counterbores, inch size drill-point counterbores, and more. In stock and ready to ship.
MSC Industrial Supply has everything you need if you’re looking for counterbores or porting tools. Shop our selection of spotfacers, counterbore bits, and more!
Counterbore screw holes in misaligned sheets or layers of material. These counterbores are C5 carbide-tipped alloy steel to resist damage when used with steel. They have a built-in pilot to maintain alignment in the hole.
Online shopping for Counterbores - Cutting Tools from a great selection at Industrial & Scientific Store.
Kennametal offers counterbores in the CTR family, including counterboring tool holders in Inch and Metric varieties and drilling inserts. Shop here!
MSC offers several types of counterbores and counterbore tools for almost any holemaking application. Available in several configurations and features, MSC carries everything from solid and interchangeable counterbore pilots to counterbore blades and reverse counterbores (spot facers).
Counterbores & Port Tools. 345 products. Counterbores (sometimes called spotfacers) create a flat-bottomed cavity at the top of an existing hole so that a bolt, nut, or other part is hidden beneath or sits flush with the top of the hole when installed into it.
Drill and counterbore holes with enough clearance for socket head screws without changing tools. The longer the counterbore, the thicker the material it can drill. For technical drawings and 3-D models, click on a part number.
Counterbores are used to enlarge a preformed hole when a flat bottom is required or to spotface when a machine finish is required. The counterbore is an end cutting tool which may utilize a pilot to align the enlarged hole being machined with the preformed hole.