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Countersink Bits

Designed for clean, flush screw seating, countersink drill bits are essential for woodworking, cabinetry, metalwork, and construction. Whether you're working with wood, aluminum, or steel, a drill bit with countersink ensures your fasteners sit perfectly without splintering or cracking the material. From adjustable styles to countersink drill bits for metal, our range includes options for both fine detailing and heavy-duty jobs. Choose a counter sink drill bit set to cover all your finishing needs with precision.

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    Diablo 4" Hole Saw Pilot Bit

    Diablo
    $2.79 - $2.79
    $2.79
    $2.79 - $2.79
    $2.79
    In Stock

    Features 60mm (2-3/8") cutting depth for deeper holes in one pass and increased productivity Snap-Lock Plus™ mandrel system allows a quick and easy change with no down time Fits all Diablo Snap-Lock Plus™ mandrels Tool free plug ejection for fast material removal Specifications Shank: 1/4" Length: 4"

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    Diablo 4" Carbide Tipped Pilot Drill Bit

    Diablo
    $5.85 - $5.85
    $5.85
    $5.85 - $5.85
    $5.85
    In Stock

    Features Carbide Tipped for long life in highly abrasive materials such as fiber cement and ceramic materials Fits with Snap-Lock Plus™ mandrel system allowing a quick and easy change with no down time 4” (105mm) bit fits Diablo deep cut hole saws Specifications Diameter: 9/32" Shank: 1/4 in. hex Length: 4"

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    Diablo 4" Cobalt Pilot Drill Bit for Hardened Metals

    Diablo
    $4.20 - $4.20
    $4.20
    $4.20 - $4.20
    $4.20
    In Stock

    Features Cuts hardened metals, cast iron, and stainless steel Fits with Snap-Lock Plus™ mandrel system allowing a quick and easy change with no down time Elevated performance in high heat applications Specifications Diameter: 9/32" Shank: 1/4 in. hex Length: 4"

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    DeWalt #10-32 HSS 2-Flute Combination Drill and Tap

    DeWalt
    $9.16 - $9.16
    $9.16
    $9.16 - $9.16
    $9.16
    In Stock

    Features Drills and taps hole in 1 application Deburr and countersink in 1 step Hex shank - designed for impact drivers Speed tip - drills material quickly Specifications Country of Origin: CHN

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    DeWalt #10 Countersink with 3/16" Drill Bit

    DeWalt
    $30.00 - $30.00
    $30.00
    $30.00 - $30.00
    $30.00
    In Stock

    Features Four-cutter countersink and tapered drill bit provide superior speed and ideal finish Drill, countersink and bore in one step Replacement tapered bits offered Tested on real world jobsites Specifications Country of Origin: USA Bit Diameter - Individual Countersink Drill Bits: 0.1875 Bit Material - Individual Countersink Drill Bits: High Speed Steel Length (in) - Individual Countersink Drill Bits: 5.0 Package Contents - Individual Countersink Drill Bits: 1 bit Shank Diameter (in) ...
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    DeWalt #6 Countersink with 9/64" Drill Bit

    DeWalt
    $27.43 - $27.43
    $27.43
    $27.43 - $27.43
    $27.43
    In Stock

    Features Four-cutter countersink and tapered drill bit provide superior speed and ideal finish Drill, countersink and bore in one step Replacement tapered bits offered Tested on real world jobsites. Specifications Country of Origin: USA Bit Diameter - Individual Countersink Drill Bits: 0.14 Bit Material - Individual Countersink Drill Bits: High Speed Steel Length (in) - Individual Countersink Drill Bits: 5.0 Package Contents - Individual Countersink Drill Bits: 1 bit Shank Diameter (in) -...
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    Drill America 82‚° Pilotless Countersink for #10 screw

    Drill America
    $19.36 - $19.36
    $19.36
    $19.36 - $19.36
    $19.36
    In Stock

    Features Proposition 65 Warning This product contains Cobalt and/or Nickel and/or Lead a chemical known to the state of California to cause cancer, or birth defects or other reproductive harm. For more information: www.P65Warnings.ca.gov Specifications Size: #10 Material: High Speed Steel Finish: Uncoated (Bright) Overall Length: 1-5/8 Shank Size: 1/4 Style: Weldon Cutting Angle: 82

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    Drill America 1-7/8" 82‚° Pilotless Countersink

    Drill America
    $13.30 - $13.30
    $13.30
    $13.30 - $13.30
    $13.30
    In Stock

    Features Proposition 65 Warning This product contains Cobalt and/or Nickel and/or Lead a chemical known to the state of California to cause cancer, or birth defects or other reproductive harm. For more information: www.P65Warnings.ca.gov Specifications Size: 3/16-17/32 Material: High Speed Steel Finish: Uncoated (Bright) Overall Length: 1-7/8 Shank Size: 1/4 Style: Weldon Cutting Angle: 82

Clean Finishes with Industrial-Grade Control


  • Flush Screw Seats, Every Time

    • Our countersink drill bits are designed to create smooth conical recesses, allowing screws to sit perfectly flush with the surface.


  • Compatible with Wood & Metal

    • Use a countersink drill bit for metal or wood, ideal for cabinetry, framing, and finish work on any material type.


  • Adjustable and Fixed Styles Available

    • Choose an adjustable countersink drill bit for flexibility across depths or go with fixed sizes for repetitive precision.


  • Sets for All Sizes and Materials

    • Our counter sink drill bit sets include a range of diameters for small hardware to large countersink bit needs.


  • Durable Steel Construction

    • Built from high-speed or carbon steel, these bits provide long-lasting performance without dulling quickly.


  • Integrated Drill + Countersink Design

    • Save time with drill bits with countersink, combining pilot drilling and countersinking into one step for speed and accuracy.



Frequently Asked Questions About Countersink Bits


What materials can countersink bits be used on?

They’re suitable for wood, plastic, aluminum, and most metals.


What is the benefit of a drill bit with countersink?

It combines two steps - pilot hole and countersink, into one for faster, cleaner work.


Can I use countersink bits on metal?

Absolutely, just ensure you're using a countersink bit for metal for the best results.


What sizes are included in a countersink drill bit set?

Most sets range from 1/8" to 1/2" and include both standard and large bit sizes.


How do I avoid chatter while countersinking?

Use slower speeds and consistent pressure, especially in harder materials.

Clearance Center

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