Countersinks | McMaster-Carr
Pop these countersinks into power drills, screwdrivers, and other tools that accept 1/4" hex shanks. Tools grip their hex shanks more securely than round shanks to tackle jobs that require higher torque. High-Speed Steel Countersinks with Two Countersinking Ends for Screws. Drill bits come in many shapes, but only two are Countersink Drill Bits For Metal appropriate for drilling metal. Forstner, spade, brad point and countersink bits can make drilling through wood and plastic faster and easier, but for metal, you need either a step bit, Countersink Drill Bit For Metal 10 which works for Countersink Drill Bit For Metal List soft metal, or a twist bit. Not all twist bits are for metal -- some are exclusively for masonry, and some are only for wood or plastic. Jan 14,  · Each countersink is really a combination tool, and it consists of a separate drill bit centered in a through-hole in the body of the countersink and held in place by either a setscrew or a collet action of the countersink body.

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