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    19 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
    Mfr.
    Each
    High-Speed Steel
    28No. 5, No. 6, No. 8, No. 10, No. 12, 1/4", 5/16", 3/8"
    		UncoatedRoundPlastic CaseLink Industries28145A610000000
     

    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.
    Image of Product. Front orientation. Countersink and Counterbore Depth Stops.

    2 Flutes

    Depth Stops

    These wear-resistant countersinks cut faster and last longer than carbon steel countersinks, so they’re often used for high-volume jobs. You can also use them on harder materials, such as steel and stainless steel.
    Countersinks
    Depth Stops
    Drill Bits
    For
    Screw Size
    Uncoated
    Body
    Dia.
    Max. Hole
    Drilling Dp.
    Hard
    Wood
    Soft
    Wood
    Overall
    Lg.
    Shank
    Size
    Shank Type
    Mfr.
    Each
    Each
    Each
    2 Flutes
     
    82° Countersink Angle
    1/2"1"No. 10
    		No. 12
    		3 3/32"1/4"Quick-Change HexMake It Snappy Tools2747A25000003438N110000008870A1900000
     

    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.
    For Tapping Screws—Since there’s no need to fit a tap, an undersized drill tip makes a hole small enough for your screw to bite into and form threads.
    Titanium Nitride (TiN) Coated—Withstand heat, corrosion, and abrasion better than uncoated and black oxide countersinks, so they stay sharp over longer periods.
    Number of Flutes—Countersinks with fewer flutes are best for aggressive cutting. They leave more room for chips to clear, reducing friction and heat. Countersinks with more flutes spread the cut across more edges for better stability, a smoother finish, and longer tool life.
    Dia.
    Uncoated
    Titanium Nitride
    (TiN) Coated
    Body
    Shank
    Drill Tip
    Dia.
    For Screw
    Size
    Overall
    Lg.
    Shank
    Type
    Mfr.
    Each
    Mfr.
    Each
    2 Flutes
     
    82° Countersink Angle
    7/16"1/4"0.220"No. 12
    		2"RoundLink Industries28145A45000000Link Industries11206N45000000
     
    82° Countersink Angle—For Tapping Screws
    7/16"1/4"0.157"No. 12
    		2"RoundKeo28145A2500000————0
     
    Cobalt Steel
    Image of Product. Front orientation. Countersinks. Drill-Point Countersinks for Screws, 2 Flutes.

    2 Flutes

    Tough and wear resistant, these countersinks last at least twice as long as high-speed steel. They can also run up to 25% faster at higher temperatures without chipping on hard materials, such as nickel.
    Number of Flutes—Countersinks with fewer flutes are best for aggressive cutting. They leave more room for chips to clear, reducing friction and heat. Countersinks with more flutes spread the cut across more edges for better stability, a smoother finish, and longer tool life.
    Dia.
    Uncoated
    Body
    Shank
    Drill Tip
    Dia.
    For Screw
    Size
    Overall
    Lg.
    Shank
    Type
    Mfr.
    Each
    2 Flutes
     
    82° Countersink Angle
    7/16"1/4"0.220"No. 12
    		2"RoundLink Industries11169N15000000
     

    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.
    Image of Product. Front orientation. Countersink and Counterbore Depth Stops.

    4 Flutes

    Depth Stops

    These wear-resistant countersinks cut faster and last longer than carbon steel countersinks, so they’re often used for high-volume jobs. You can also use them on harder materials, such as steel and stainless steel.
    Countersinks
    Depth Stops
    Drill Bits
    Uncoated
    Body
    Dia.
    For Drill
    Bit Size
    For Screw
    Size
    Overall
    Lg.
    Mfr.
    Each
    Each
    Each
    4 Flutes
     
    82° Countersink Angle
    3/8"7/32"No. 12
    		7/8"W. L. Fuller2910A310000002903A13000008870A2500000
    1/2"7/32"No. 12
    		7/8"W. L. Fuller2910A21000002903A1500008870A250000
     
    90° Countersink Angle
    3/8"7/32"No. 12
    		7/8"W. L. Fuller2910A91000002903A1300008870A250000
    1/2"7/32"No. 12
    		7/8"W. L. Fuller2910A81000002903A1500008870A250000
     
    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.
    Image of Product. Front orientation. Countersink and Counterbore Depth Stops.

    4 Flutes

    Depth Stops

    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
    Depth Stops
    Drill Bits
    Uncoated
    Body
    Dia.
    For Drill
    Bit Size
    For Screw
    Size
    Overall
    Lg.
    Mfr.
    Each
    Each
    Each
    4 Flutes
     
    82° Countersink Angle
    3/8"7/32"No. 12
    		7/8"W. L. Fuller2785A270000002903A13000003080A23000000
    1/2"7/32"No. 12
    		7/8"W. L. Fuller2785A39000002903A1500003080A2300000
     

    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 SteelAbout High-Speed Steel
    Image of Product. Front orientation. Counterbores. Counterbores for High-Profile Rounded-Head Screws.
    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.
    Mfr.
    Each
    No. 12
    		0.372"3"Round20.250"Republic Drill2909A21000000
     
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