Drill and counterbore holes of different depths without changing tools. If the hole is obstructed, counterbore from the reverse side instead. Choose from our selection of inch size high-speed …

Counterbores designed for castings, concaved parts, or rounded surfaces. Available in long reach styles for better control and finish.

MSC carries a variety of counterbores and counterbore tools including counterbore pins, counterbore pilots and more. Shop counterbores by type, size and brand.

Counterbores for the flat under the head of nails, spikes and bolts to sink the heads under the surface or deep enough for wood plug to cover the head. Can be set at any point on twist drill …

Counterbores are made with standard dimensions for a certain size of screw or are produced in sizes that are not related to any particular screw size.

If, on the other hand, the hole is enlarged to a considerable depth, it is designated as counterboring. These counterbores are made of two-piece construction, having an integral …

Counterbores are cylindrical flat-bottomed holes that enlarge another coaxial hole. A counterbore can also refer to the tool used to create these holes (given the term counterbore cutter).

Aug 9, 2022 · A counterbore is a flat-bottomed cylindrical hole that is larger than and coaxial to another cylindrical hole. It is used to provide a flat and recessed mounting surface for mating …

What Is a Counterbore? A counterbore is a hole-making tool that enlarges a portion of an existing hole to create a flat-bottomed recess for a screw, bolt, or nut head. This allows fasteners to sit …

Counterboring is enlarging of the top portion of an existing hole. This will form a cylindrical-shaped opening with a flat or angled bottom that will allow the head of a screw to have a firm seat. …