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Countersink Bits

Choose either a #6, #8 or #10 countersink bit, made in the US from high-speed steel; or get the Festool Centrotec Countersink Bit or a replacement countersink bit.

Pick out the correct size countersink bit for your next project and start drilling with precision today. These Whiteside countersinks are designed to countersink holes for #6, #8, and #10 size screws. Use to countersink holes in wood, aluminum, or plastic for flat head screws. They’re designed to slip over the drill bit to affix with dual set screws into the flutes.

Each Whiteside countersink bit or Festool countersink bit from Bits & Bits is designed to be extremely precise, allowing you to sit screw heads perfectly flush right where you want them. Find the countersink drill bit you need for your projects right here!


Pick out the correct size countersink bit for your next project and start drilling with precision today.Each countersink bit we offer here is made in the USA from high-speed steel. This high-speed steel makes these countersink bits tougher and longer-lasting for use on harder, abrasive materials. And they can even withstand much higher temperatures too.You can't go wrong with a countersink bit from Bits & Bits. These are designed to be extremely precise, allowing you to sit screw heads perfectly flush right where you want them.