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    132 Products
    About Countersinks
    industrial info icon

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

    For Cutting

    For Cutting

    Material

    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
    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.
    Black Oxide—The dark finish increases wear resistance and reduces friction to improve chip flow, so these can last 50% longer than uncoated countersinks.
    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
    Black Oxide
    Titanium Nitride
    (TiN) Coated
    Body
    Shank
    Drill Tip
    Dia.
    For Screw
    Size
    Overall
    Lg.
    Shank
    Type
    Mfr.
    Each
    Mfr.
    Each
    Mfr.
    Each
    2 Flutes
    Image of Product. Front orientation. Countersinks. Drill-Point Countersinks for Screws, 2 Flutes.
     
    82° Countersink Angle
    5/16"1/4"0.127"No. 5
    		1 3/4"RoundLink Industries28145A41000000————0Link Industries11206N41000000
    5/16"1/4"0.140"No. 6
    		1 3/4"RoundLink Industries28145A4200000————0Link Industries11206N4200000
    7/16"1/4"0.166"No. 8
    		2"RoundLink Industries28145A4300000————0Link Industries11206N4300000
    7/16"1/4"0.192"No. 10
    		2"RoundLink Industries28145A4400000————0Link Industries11206N4400000
    7/16"1/4"0.220"No. 12
    		2"RoundLink Industries28145A4500000————0Link Industries11206N4500000
    1/2"3/8"0.252"1/4"
    		2 3/8"RoundLink Industries28145A4600000————0Link Industries11206N4600000
    5/8"3/8"0.315"5/16"
    		2 5/8"RoundLink Industries28145A4700000————0Link Industries11206N4700000
    3/4"1/2"0.378"3/8"
    		3"RoundLink Industries28145A4800000————0Link Industries11206N4800000
    1"1/2"0.503"1/2"
    		3"RoundLink Industries28145A3100000————0Link Industries11206N3100000
    1 1/8"1/2"0.625"5/8"
    		3 1/2"RoundLink Industries28145A3200000————0Link Industries11206N32000000
     
    82° Countersink Angle—For Tapping Screws
    5/16"1/4"0.099"No. 6
    		1 3/4"RoundKeo28145A2200000————0————0
    3/8"1/4"0.116"No. 8
    		1 3/4"RoundKeo28145A2300000————0————0
    7/16"1/4"0.135"No. 10
    		2"RoundKeo28145A2400000————0————0
    7/16"1/4"0.157"No. 12
    		2"RoundKeo28145A2500000————0————0
    1/2"1/4"0.184"1/4"
    		2"RoundKeo28145A2600000————0————0
     
    90° Countersink Angle
    6.35 mm6.35 mm3.10 mmM3
    		44.44 mmRoundLink Industries28145A7100000————0Link Industries11206N7100000
    8.20 mm6.35 mm4.10 mmM4
    		44.44 mmRoundLink Industries28145A7200000————0Link Industries11206N7200000
    11.10 mm7.93 mm5.10 mmM5
    		50.79 mmRoundLink Industries28145A7300000————0Link Industries11206N7300000
    12.70 mm7.93 mm6.10 mmM6
    		50.79 mmRoundLink Industries28145A7400000————0Link Industries11206N7400000
    17.45 mm11.11 mm8.10 mmM8
    		66.66 mmRoundLink Industries28145A7500000————0Link Industries11206N7500000
    20.63 mm12.7 mm10.10 mmM10
    		76.19 mmRoundLink Industries28145A7600000————0Link Industries11206N7600000
    25.40 mm15.87 mm12.10 mmM12
    		76.19 mmRoundLink Industries28145A7700000————0Link Industries11206N7700000
     
    4 Flutes
    Image of Product. Front orientation. Countersinks. Drill-Point Countersinks for Screws, 4 Flutes.
     
    82° Countersink Angle
    1/8"1/8"0.041"—1 1/2"Round————0Melin Tool27535A33000000————0
    3/16"3/16"0.062"—1 1/2"Round————0Melin Tool27535A3400000————0
    1/4"1/4"0.082"—2"Round————0Melin Tool27535A3500000————0
    5/16"1/4"0.104"—2"Round————0Melin Tool27535A3600000————0
    3/8"1/4"0.125"—2"Round————0Melin Tool27535A3700000————0
    1/2"3/8"0.167"—2"Round————0Melin Tool27535A3800000————0
    5/8"3/8"0.208"—2 1/4"Round————0Melin Tool27535A3900000————0
    3/4"1/2"0.250"—2 3/4"Round————0Melin Tool27535A4100000————0
    7/8"1/2"0.291"—2 3/4"Round————0Melin Tool27535A4200000————0
    1"1/2"0.333"—2 3/4"Round————0Melin Tool27535A43000000————0
     
    90° Countersink Angle
    1/8"1/8"0.041"—1 1/2"Round————0Melin Tool27535A4400000————0
    3/16"3/16"0.062"—1 1/2"Round————0Melin Tool27535A4500000————0
    1/4"1/4"0.082"—2"Round————0Melin Tool27535A4600000————0
    5/16"1/4"0.104"—2"Round————0Melin Tool27535A4700000————0
    3/8"1/4"0.125"—2"Round————0Melin Tool27535A4800000————0
    1/2"3/8"0.167"—2"Round————0Melin Tool27535A4900000————0
    5/8"3/8"0.208"—2 1/4"Round————0Melin Tool27535A5100000————0
    3/4"1/2"0.250"—2 3/4"Round————0Melin Tool27535A5200000————0
    7/8"1/2"0.291"—2 3/4"Round————0Melin Tool27535A5300000————0
    1"1/2"0.333"—2 3/4"Round————0Melin Tool27535A54000000————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
    5/16"1/4"0.140"No. 6
    		1 3/4"RoundLink Industries11169N12000000
    7/16"1/4"0.166"No. 8
    		2"RoundLink Industries11169N1300000
    7/16"1/4"0.192"No. 10
    		2"RoundLink Industries11169N1400000
    7/16"1/4"0.220"No. 12
    		2"RoundLink Industries11169N1500000
    1/2"3/8"0.252"1/4"
    		2 3/8"RoundLink Industries11169N1600000
    5/8"3/8"0.315"5/16"
    		2 5/8"RoundLink Industries11169N1700000
    3/4"1/2"0.378"3/8"
    		3"RoundLink Industries11169N1800000
     

    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
    90°
    Countersink Angle
    No. of
    Flutes
    No. of
    Pieces
    For Screw Size
    Finish
    Shank
    Type
    Container
    Type
    Mfr.
    Each
    Mfr.
    Each
    High-Speed Steel
    27M3, M4, M5, M6, M8, M10, M12
    		UncoatedRoundPlastic Case————0Link Industries28145A620000000
    28No. 5, No. 6, No. 8, No. 10, No. 12, 1/4", 5/16", 3/8"
    		UncoatedRoundPlastic CaseLink Industries28145A610000000————0
     

    Drill-Point Countersinks for Rivets

    Image of Product. Front orientation. Countersinks. Drill-Point Countersinks for Rivets.
    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 rivet heads.
    High-Speed Steel
    These versatile, wear-resistant countersinks cut cleanly in most materials, including plastic, aluminum, and steel.
    Black Oxide—The dark finish increases wear resistance and reduces friction to improve chip flow, so these can last 50% longer than uncoated countersinks.
    Dia.
    Black Oxide
    Body
    Shank
    Drill Tip
    Dia.
    Overall
    Lg.
    Shank
    Type
    Mfr.
    Each
    4 Flutes
     
    100° Countersink Angle
    1/8"1/8"0.041"1 1/2"RoundMelin Tool27535A55000000
    3/16"3/16"0.062"1 1/2"RoundMelin Tool27535A5600000
    1/4"1/4"0.082"2"RoundMelin Tool27535A5700000
    5/16"1/4"0.104"2"RoundMelin Tool27535A5800000
    3/8"1/4"0.125"2"RoundMelin Tool27535A5900000
    1/2"3/8"0.167"2"RoundMelin Tool27535A6100000
    5/8"3/8"0.208"2 1/4"RoundMelin Tool27535A6200000
    3/4"1/2"0.250"2 3/4"RoundMelin Tool27535A6300000
    7/8"1/2"0.291"2 3/4"RoundMelin Tool27535A6400000
    1"1/2"0.333"2 3/4"RoundMelin Tool27535A65000000
     
    120° Countersink Angle
    1/8"1/8"0.041"1 1/2"RoundMelin Tool27535A7700000
    3/16"3/16"0.062"1 1/2"RoundMelin Tool27535A7800000
    1/4"1/4"0.082"2"RoundMelin Tool27535A7900000
    5/16"1/4"0.104"2"RoundMelin Tool27535A8100000
    3/8"1/4"0.125"2"RoundMelin Tool27535A8200000
    1/2"3/8"0.167"2"RoundMelin Tool27535A8300000
    5/8"3/8"0.208"2 1/4"RoundMelin Tool27535A8400000
    3/4"1/2"0.250"2 3/4"RoundMelin Tool27535A8500000
    1"1/2"0.333"2 3/4"RoundMelin Tool27535A87000000
     

    Drill-Point Countersinks with Two Countersinking Ends for Screws

    When one end starts to wear, flip the tool around for a fresh cutting edge. These countersinks save time by drilling a pilot hole and countersinking in a single step. They have a small drill point to drill new pilot holes topped with cone-shaped recesses for screw heads.
    Carbide
    Image of Product. Front orientation. Countersinks. Drill-Point Countersinks with Two Countersinking Ends for Screws, 4 Flutes.

    4 Flutes

    The hardest and most wear-resistant countersinks you can buy. They stay sharp at high temperatures and faster speeds for the best performance on hard and difficult-to-machine materials. They last 10 to 20 times longer than their closest alternative, cobalt steel. Carbide can be brittle, however, so use a rigid machine tool holder to prevent breakage.
    Dia.
    Uncoated
    Body
    Shank
    Drill Tip
    Dia.
    Overall
    Lg.
    Shank
    Type
    Mfr.
    Each
    4 Flutes
     
    82° Countersink Angle
    1/8"1/8"0.041"1 1/2"RoundMelin Tool3290A512000000
    3/16"3/16"0.062"2"RoundMelin Tool3290A52200000
    1/4"1/4"0.082"2"RoundMelin Tool3290A53200000
    5/16"5/16"0.104"2 1/2"RoundMelin Tool3290A54200000
    3/8"3/8"0.125"2 1/2"RoundMelin Tool3290A552000000
    1/2"1/2"0.167"3"RoundMelin Tool3290A562000000
    5/8"5/8"0.208"3 1/2"RoundMelin Tool3290A572000000
     
    90° Countersink Angle
    1/8"1/8"0.041"1 1/2"RoundMelin Tool3290A51300000
    3/16"3/16"0.062"2"RoundMelin Tool3290A52300000
    1/4"1/4"0.082"2"RoundMelin Tool3290A53300000
    5/16"5/16"0.104"2 1/2"RoundMelin Tool3290A54300000
    3/8"3/8"0.125"2 1/2"RoundMelin Tool3290A553000000
    1/2"1/2"0.167"3"RoundMelin Tool3290A563000000
    5/8"5/8"0.208"3 1/2"RoundMelin Tool3290A573000000
    3/4"3/4"0.250"4"RoundMelin Tool3290A583000000
     

    Drill-Point Countersinks with Two Countersinking Ends for Rivets

    When one end starts to wear, flip the tool around for a fresh cutting edge. These countersinks have a small drill point to drill new pilot holes topped with cone-shaped recesses for rivet heads.
    Carbide
    Image of Product. Front orientation. Countersinks. Drill-Point Countersinks with Two Countersinking Ends for Rivets, 4 Flutes.

    4 Flutes

    The hardest and most wear-resistant countersinks you can buy. They stay sharp at high temperatures and faster speeds for the best performance on hard and difficult-to-machine materials. They last 10 to 20 times longer than their closest alternative, cobalt steel. Carbide can be brittle, however, so use a rigid machine tool holder to prevent breakage.
    Dia.
    Uncoated
    Body
    Shank
    Drill Tip
    Dia.
    Overall
    Lg.
    Shank
    Type
    Mfr.
    Each
    4 Flutes
     
    100° Countersink Angle
    1/8"1/8"0.041"1 1/2"RoundMelin Tool3290A514000000
    3/16"3/16"0.062"2"RoundMelin Tool3290A52400000
    1/4"1/4"0.082"2"RoundMelin Tool3290A53400000
    5/16"5/16"0.104"2 1/2"RoundMelin Tool3290A54400000
    3/8"3/8"0.125"2 1/2"RoundMelin Tool3290A554000000
    1/2"1/2"0.167"3"RoundMelin Tool3290A564000000
     
    120° Countersink Angle
    1/8"1/8"0.041"1 1/2"RoundMelin Tool3290A51600000
    3/16"3/16"0.062"2"RoundMelin Tool3290A52600000
    1/4"1/4"0.082"2"RoundMelin Tool3290A53600000
    5/16"5/16"0.104"2 1/2"RoundMelin Tool3290A54600000
    3/8"3/8"0.125"2 1/2"RoundMelin Tool3290A556000000
    1/2"1/2"0.167"3"RoundMelin Tool3290A566000000
    3/4"3/4"0.250"4"RoundMelin Tool3290A586000000
     

    Drill-Point Countersinks for Lathe Centers

    No need to drill or punch a starter hole—a sharp point guides the cutting edges straight into your workpiece. The 60° angle creates a precise recess for both rotating and stationary lathe centers, so the workpiece stays aligned as it spins.
    High-Speed Steel
    Image of Product. Front orientation. Countersinks. Drill-Point Countersinks for Lathe Centers, 4 Flutes.

    4 Flutes

    These versatile, wear-resistant countersinks cut cleanly in most materials, including plastic, aluminum, and steel.
    Black Oxide—The dark finish increases wear resistance and reduces friction to improve chip flow, so these can last 50% longer than uncoated countersinks.
    Dia.
    Black Oxide
    Body
    Shank
    Drill Tip
    Dia.
    Overall
    Lg.
    Shank
    Type
    Mfr.
    Each
    4 Flutes
     
    60° Countersink Angle
    1/8"1/8"0.041"1 1/2"RoundMelin Tool27535A22000000
    3/16"3/16"0.062"1 1/2"RoundMelin Tool27535A2300000
    1/4"1/4"0.082"2"RoundMelin Tool27535A2400000
    5/16"1/4"0.104"2"RoundMelin Tool27535A2500000
    3/8"1/4"0.125"2"RoundMelin Tool27535A2600000
    1/2"3/8"0.167"2"RoundMelin Tool27535A2700000
    5/8"3/8"0.208"2 1/4"RoundMelin Tool27535A2800000
    3/4"1/2"0.250"2 3/4"RoundMelin Tool27535A2900000
    7/8"1/2"0.291"2 3/4"RoundMelin Tool27535A3100000
    1"1/2"0.333"2 3/4"RoundMelin Tool27535A32000000
     

    Drill-Point Countersinks with Two Countersinking Ends for Lathe Centers

    When one end starts to wear, flip the tool around for a fresh cutting edge. A sharp point on these countersinks guides the cutting edges straight into your workpiece, so you don't have to drill or punch a starter hole first. The 60° angle creates a precise recess for both rotating and stationary lathe centers, keeping the workpiece aligned as it spins.
    Carbide
    Image of Product. Front orientation. Countersinks. Drill-Point Countersinks with Two Countersinking Ends for Lathe Centers, 4 Flutes.

    4 Flutes

    The hardest and most wear-resistant countersinks you can buy. They stay sharp at high temperatures and faster speeds for the best performance on hard and difficult-to-machine materials. They last 10 to 20 times longer than their closest alternative, cobalt steel. Carbide can be brittle, however, so use a rigid machine tool holder to prevent breakage.
    Dia.
    Uncoated
    Body
    Shank
    Drill Tip
    Dia.
    Overall
    Lg.
    Shank
    Type
    Mfr.
    Each
    4 Flutes
     
    60° Countersink Angle
    1/8"1/8"0.041"1 1/2"RoundMelin Tool3290A511000000
    3/16"3/16"0.062"2"RoundMelin Tool3290A52100000
    1/4"1/4"0.082"2"RoundMelin Tool3290A53100000
    5/16"5/16"0.104"2 1/2"RoundMelin Tool3290A54100000
    3/8"3/8"0.125"2 1/2"RoundMelin Tool3290A551000000
    1/2"1/2"0.167"3"RoundMelin Tool3290A561000000
    3/4"3/4"0.250"4"RoundMelin Tool3290A581000000
     
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