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    13 Products
    About Countersinks
    industrial info icon

    Choose the right countersink angle, body diameter, and number of flutes for your application.

    Drill-Point Countersink Sets for Screws

    Image of Product. Front orientation. Countersinks. Drill-Point Countersink Sets for Screws.
    Save time by drilling and countersinking your pilot hole in one pass for a range of screw sizes. These countersinks have a small drill point to drill new pilot holes topped with cone-shaped recesses for screw heads.
    High-Speed Steel—These versatile, wear-resistant countersinks cut cleanly in most materials, including plastic, aluminum, and steel.
    82°
    Countersink Angle
    No. of
    Flutes
    No. of
    Pieces
    For Screw Size
    Finish
    Shank
    Type
    Container
    Type
    Each
    High-Speed Steel
    28No. 5, No. 6, No. 8, No. 10, No. 12, 1/4", 5/16", 3/8"
    		UncoatedRoundPlastic Case000000000000000
     

    Quick-Change Hex Drill-Bit Countersinks for Wood and Plastic

    Switch bits instead of tools to simplify jobs. These snap directly into drills, power screwdrivers, and other tools that accept a 1/4" hex shank. You can slide the countersink up and down the drill bit and then secure it with a set screw, so one tool will drill countersunk holes for screws of different lengths. These countersinks cut a smooth and even finish in wood and plastic on the first pass.
    High-Speed Steel
    Image of Product. Front orientation. Countersinks. For Cutting Screw Holes, Drill-Bit Countersink, For Wood, Straight Flute, Quick-Change Hex Shank, Sold Individually, 1 Countersinking End, 2 Flutes.

    2 Flutes

    The choice if you're countersinking lots of holes, these wear-resistant countersinks cut faster and last longer than carbon steel.
    Countersinks
    Replacement
    Drill Bits
    For
    Screw Size
    Uncoated
    Body
    Dia.
    Max. Hole
    Drilling Dp.
    Hard
    Wood
    Soft
    Wood
    Overall
    Lg.
    Shank
    Size
    Shank Type
    Each
    Each
    2 Flutes
     
    82° Countersink Angle
    1/2"1"No. 10
    		No. 12
    		3 3/32"1/4"Quick-Change Hex000000000000000000000000
     

    Drill-Point Countersinks for Screws

    Save time by drilling a pilot hole and countersinking in a single step. These countersinks have a small drill point to drill new pilot holes topped with cone-shaped recesses for screw heads.
    High-Speed Steel
    Image of Product. Front orientation. Countersinks. Drill-Point Countersinks for Screws, 2 Flutes.

    2 Flutes

    These versatile, wear-resistant countersinks cut cleanly in most materials, including plastic, aluminum, and steel.
    Number of Flutes—Countersinks with fewer flutes reduce chatter, so you can run them at high speeds. Countersinks with a higher number of flutes remove more material per revolution, leaving a smoother finish and extending tool life.
    Dia.
    Uncoated
    Body
    Shank
    Drill Tip
    Dia.
    For Screw
    Size
    Overall
    Lg.
    Shank
    Type
    Each
    2 Flutes
     
    82° Countersink Angle
    7/16"1/4"0.220"No. 12
    		2"Round00000000000000
     

    Drill-Bit Countersinks for Wood and Plastic

    These countersinks attach at various points along the drill bit, so one tool will drill countersunk holes for screws of different lengths. They're designed to cut a smooth and even finish in wood and plastic on the first pass.
    High-Speed Steel
    Image of Product. Front orientation. Countersinks. Drill-Bit Countersink, 1 Countersinking End, For Wood, For Cutting Screw Holes, Sold Individually, Straight Flute, 4 Flutes.

    4 Flutes

    The choice if you're countersinking lots of holes, these wear-resistant countersinks cut faster and last longer than carbon steel.
    Countersinks
    Counterbore Collars
    Uncoated
    Body
    Dia.
    For Drill
    Bit Size
    For Screw
    Size
    Overall
    Lg.
    Each
    OD
    Wd.
    Each
    4 Flutes
     
    82° Countersink Angle
    3/8"7/32"No. 12
    		7/8"00000000000005/8"1/4"000000000000
    1/2"7/32"No. 12
    		7/8"0000000000003/4"1/4"00000000000
     
    90° Countersink Angle
    3/8"7/32"No. 12
    		7/8"0000000000005/8"1/4"00000000000
    1/2"7/32"No. 12
    		7/8"0000000000003/4"1/4"00000000000
     
    Carbon Steel
    Image of Product. Front orientation. Countersinks. Drill-Bit Countersink, 1 Countersinking End, For Wood, For Cutting Screw Holes, Sold Individually, Straight Flute, 4 Flutes.

    4 Flutes

    Stronger than high-speed steel, so it will cut through harder materials. However, high-speed steel is more precise, lasts longer, and cuts at higher speeds.
    Countersinks
    Counterbore Collars
    Uncoated
    Body
    Dia.
    For Drill
    Bit Size
    For Screw
    Size
    Overall
    Lg.
    Each
    OD
    Wd.
    Each
    4 Flutes
     
    82° Countersink Angle
    3/8"7/32"No. 12
    		7/8"0000000000005/8"1/4"000000000000
    1/2"7/32"No. 12
    		7/8"0000000000003/4"1/4"00000000000
     

    Counterbores for High-Profile Rounded-Head Screws

    Image of Product. Front orientation. Counterbores. Counterbores for High-Profile Rounded-Head Screws.
    Cut flat, close-fitting recesses for fillister-head screws. These counterbores cut deeply enough for screws with tall head profiles to sit flush with the surface.
    High-Speed Steel
    Durable and wear resistant, these counterbores make accurate cuts in most materials without chipping or cracking.
    Uncoated
    For Screw
    Size
    Body
    Dia.
    Overall
    Lg.
    Shank
    Type
    No. of
    Flutes
    Pilot
    Lg.
    Each
    No. 12
    		0.372"3"Round20.250"0000000000000
     
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