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Combination drills and countersinks are short, double-ended drills used to produce a shallow conical or center hole, typically on the end of workpiece to be held between centers before turning in a lathe or cylindrical grinding.
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.
Countersinks expand the top of an existing hole in a workpiece to allow countersinking screws to install flush with the surface of the workpiece. This helps prevent the workpiece material from swelling when a screw is inserted and tightened down.
ReidSupply has a wide selection of tools for drilling, cutting, smoothing and deburring holes, and have options ranging from standard drill bit sets to precision reamers. Reid Supply has an impressive selection of drill bits and accessories, such as drill blanks step drills. Browse our section to find drill bits for various metal, wood or plastic materials.
Hole saws are used for making large hold diameters because they can do the job quicker than standard drill bits. We offer an assortment of hole saws, as well as pilot drills and arbors.
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