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    164 Products
    About Countersinks
    industrial info icon

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

    Material

    Material

    Flute Type

    Countersinks for Rivets

    Cut a cone-shaped opening in a hole to install your rivet flush with the surface. The 100°, 110°, and 120° countersink angles are compatible with standard 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.
    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 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
    Black Oxide
    Titanium Nitride
    (TiN) Coated
    Body
    Shank
    Overall
    Lg.
    Shank
    Type
    Each
    Each
    Each
    1 Flute
    Image of Product. Front orientation. Countersinks. Countersinks for Rivets, 1 Flute.
     
    120° Countersink Angle
    1/8"1/8"1 1/4"Round00000000000000———000000000000000
    3/16"3/16"1 3/8"Round0000000000000———00000000000000
    1/4"1/4"1 1/2"Round0000000000000———00000000000000
    3/8"1/4"1 3/4"Round0000000000000———00000000000000
    1/2"1/4"2"Round0000000000000———00000000000000
    5/8"3/8"2 1/4"Round0000000000000———00000000000000
    3/4"1/2"2 5/8"Round0000000000000———00000000000000
    1"1/2"2 3/4"Round0000000000000———00000000000000
    1 1/4"1/2"2 3/4"Round0000000000000———000000000000000
    1 1/2"3/4"2 7/8"Round00000000000000———000000000000000
    1 3/4"3/4"3"Round00000000000000———000000000000000
    2"3/4"3 1/4"Round00000000000000———000000000000000
     
    3 Flutes
    Image of Product. Front orientation. Countersinks. Countersinks for Rivets, 3 Flutes.
     
    120° Countersink Angle
    1/4"1/4"1 1/2"Round000000000000———0———0
    1/4"1/4"2"Round———0———00000000000000
    3/8"1/4"1 3/4"Round000000000000———0———0
    3/8"1/4"2"Round———0———00000000000000
    1/2"1/4"2"Round000000000000———0———0
    1/2"3/8"2"Round———0———00000000000000
    5/8"3/8"2 1/4"Round000000000000———00000000000000
    3/4"1/2"2 5/8"Round000000000000———0———0
    3/4"1/2"2 3/4"Round———0———00000000000000
    1"1/2"2 3/4"Round000000000000———00000000000000
     
    6 Flutes
    Image of Product. Front orientation. Countersinks. Countersinks for Rivets, 6 Flutes.
     
    120° Countersink Angle
    1/8"1/8"1 1/4"Round———0000000000000000000000000000
    3/16"3/16"1 3/8"Round———000000000000000000000000000
    1/4"1/4"1 1/2"Round———000000000000000000000000000
    5/16"1/4"1 3/4"Round———000000000000000000000000000
    3/8"1/4"1 3/4"Round———000000000000000000000000000
    1/2"3/8"2"Round———000000000000000000000000000
    5/8"3/8"2 1/4"Round———000000000000000000000000000
    3/4"1/2"2 5/8"Round———00000000000000000000000000
    7/8"1/2"2 3/4"Round———000000000000000000000000000
    1"1/2"2 3/4"Round———000000000000000000000000000
    1 1/4"1/2"2 3/4"Round———000000000000000000000000000
    1 1/2"3/4"2 7/8"Round———00000000000000000000000000000
    2"3/4"3 1/4"Round———00000000000000000000000000000
     
    Cobalt Steel
    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.
    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 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
    Black Oxide
    Titanium Nitride
    (TiN) Coated
    Body
    Shank
    Overall
    Lg.
    Shank
    Type
    Each
    Each
    Each
    1 Flute
    Image of Product. Front orientation. Countersinks. Countersinks for Rivets, 1 Flute.
     
    120° Countersink Angle
    1/8"1/8"1 1/2"Round0000000000000———000000000000000
    3/16"3/16"1 1/2"Round———0———00000000000000
    1/4"1/4"2"Round0000000000000———00000000000000
    3/8"1/4"2"Round0000000000000———00000000000000
    1/2"3/8"2"Round0000000000000———00000000000000
    5/8"3/8"2 1/4"Round0000000000000———00000000000000
    3/4"1/2"2 3/4"Round0000000000000———00000000000000
    1"1/2"2 3/4"Round0000000000000———00000000000000
    1 1/4"1/2"3"Round0000000000000———000000000000000
    1 1/2"3/4"3 1/2"Round00000000000000———000000000000000
    1 3/4"3/4"4 1/4"Round———0———000000000000000
     
    3 Flutes
    Image of Product. Front orientation. Countersinks. Countersinks for Rivets, 3 Flutes.
     
    120° Countersink Angle
    1/4"1/4"2"Round0000000000000———00000000000000
    3/8"1/4"2"Round0000000000000———00000000000000
    1/2"3/8"2"Round0000000000000———00000000000000
    5/8"3/8"2 1/4"Round0000000000000———00000000000000
    3/4"1/2"2 3/4"Round0000000000000———00000000000000
    1"1/2"2 3/4"Round0000000000000———00000000000000
     
    6 Flutes
    Image of Product. Front orientation. Countersinks. Countersinks for Rivets, 6 Flutes.
     
    120° Countersink Angle
    1/8"1/8"1 1/4"Round———00000000000000———0
    1/8"1/8"1 1/2"Round———0———00000000000000
    3/16"3/16"1 3/8"Round———00000000000000———0
    3/16"3/16"1 1/2"Round———0———00000000000000
    1/4"1/4"1 1/2"Round———00000000000000———0
    1/4"1/4"2"Round———0———00000000000000
    5/16"1/4"1 1/2"Round———00000000000000———0
    5/16"1/4"2"Round———0———00000000000000
    3/8"1/4"1 3/4"Round———00000000000000———0
    3/8"1/4"2"Round———0———00000000000000
    1/2"3/8"2"Round———000000000000000000000000000
    5/8"3/8"2 1/4"Round———000000000000000000000000000
    3/4"1/2"2 5/8"Round———00000000000000———0
    3/4"1/2"2 3/4"Round———0———00000000000000
    7/8"1/2"2 3/4"Round———000000000000000000000000000
    1"1/2"2 3/4"Round———000000000000000000000000000
    1 1/4"1/2"2 3/4"Round———00000000000000———0
    1 1/2"3/4"2 7/8"Round———00000000000000000000000000000
    2"3/4"3 1/4"Round———00000000000000000000000000000
     

    Countersinks with Two Countersinking Ends for Rivets

    When one end starts to wear, flip the tool around for a fresh cutting edge.
    High-Speed Steel
    Image of Product. Front orientation. Countersinks. Countersinks with Two Countersinking Ends for Rivets, 6 Flutes.

    6 Flutes

    These versatile, wear-resistant countersinks cut cleanly in most materials, including plastic, aluminum, and steel.
    Dia.
    Uncoated
    Body
    Shank
    Overall
    Lg.
    Shank
    Type
    Each
    6 Flutes
     
    120° Countersink Angle
    1/8"1/8"1 1/2"Round00000000000000
    3/16"3/16"2"Round0000000000000
    1/4"1/4"2"Round0000000000000
    5/16"5/16"2 1/2"Round0000000000000
    3/8"3/8"2 1/2"Round0000000000000
    1/2"1/2"3"Round0000000000000
    5/8"5/8"3 1/2"Round0000000000000
    3/4"3/4"4"Round0000000000000
     
    Carbide
    Image of Product. Front orientation. Countersinks. Countersinks with Two Countersinking Ends for Rivets, 6 Flutes.

    6 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
    Overall
    Lg.
    Shank
    Type
    Each
    6 Flutes
     
    120° Countersink Angle
    1/8"1/8"1 1/2"Round00000000000000
    3/16"3/16"2"Round0000000000000
    1/4"1/4"2"Round0000000000000
    5/16"5/16"2 1/2"Round0000000000000
    3/8"3/8"2 1/2"Round0000000000000
    1/2"1/2"3"Round00000000000000
    5/8"5/8"3 1/2"Round00000000000000
    3/4"3/4"4"Round00000000000000
     

    Smooth-Finish Countersinks for Rivets

    Make smooth, uniform cuts without stopping to clear chips. Spiral-flute cutting edges lift chips out of the hole as you cut so they don't clog the tool.
    High-Speed Steel
    Image of Product. Front orientation. Countersinks. Smooth-Finish Countersinks for Rivets, 3 Flutes.

    3 Flutes

    These versatile, wear-resistant countersinks cut cleanly in most materials, including plastic, aluminum, and steel.
    Dia.
    Uncoated
    Body
    Shank
    Overall
    Lg.
    Shank
    Type
    Each
    3 Flutes
     
    120° Countersink Angle
    1/4"1/4"1 1/4"Round0000000000000
    3/8"1/4"1 5/8"Round000000000000
    1/2"1/4"2"Round000000000000
    5/8"1/4"2 1/4"Round000000000000
    3/4"1/2"3"Round000000000000
    1"1/2"3 1/4"Round000000000000
    1 1/4"5/8"3 1/2"Round0000000000000
    1 1/2"3/4"3 7/8"Round0000000000000
    2"3/4"4 1/4"Round0000000000000
     

    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
    Each
    4 Flutes
     
    120° Countersink Angle
    1/8"1/8"0.041"1 1/2"Round00000000000000
    3/16"3/16"0.062"1 1/2"Round0000000000000
    1/4"1/4"0.082"2"Round0000000000000
    5/16"1/4"0.104"2"Round0000000000000
    3/8"1/4"0.125"2"Round0000000000000
    1/2"3/8"0.167"2"Round0000000000000
    5/8"3/8"0.208"2 1/4"Round0000000000000
    3/4"1/2"0.250"2 3/4"Round0000000000000
    7/8"1/2"0.291"2 3/4"Round0000000000000
    1"1/2"0.333"2 3/4"Round0000000000000
     

    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
    Each
    4 Flutes
     
    120° Countersink Angle
    1/8"1/8"0.041"1 1/2"Round00000000000000
    3/16"3/16"0.062"2"Round0000000000000
    1/4"1/4"0.082"2"Round0000000000000
    5/16"5/16"0.104"2 1/2"Round0000000000000
    3/8"3/8"0.125"2 1/2"Round0000000000000
    1/2"1/2"0.167"3"Round00000000000000
    3/4"3/4"0.250"4"Round00000000000000
     

    Countersink Sets for Rivets

    Image of Product. Front orientation. Countersinks. Countersink Sets for Rivets.
    Cut cone-shaped recesses for rivets of various diameters so the head sits flush with the surface.
    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.
    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.
    120°
    Countersink Angle
    No. of
    Flutes
    Body Dia. Included
    No. of
    Pieces
    Finish
    Shank
    Type
    Container
    Type
    Each
    High-Speed Steel
    31/4", 3/8", 1/2", 3/4", 1"5UncoatedRoundPlastic Case00000000000000
    61/4", 5/16", 3/8", 1/2", 5/8", 3/4", 1"7Black OxideRoundPlastic Case0000000000000
     

    Smooth-Finish Countersink Sets for Rivets

    Image of Product. Front orientation. Countersinks. Smooth-Finish Countersink Sets for Rivets.
    Make smooth, uniform cuts without stopping to clear chips. Spiral-flute cutting edges lift chips out of the hole as you cut so they don't clog the tool.
    High-Speed Steel—These versatile, wear-resistant countersinks cut cleanly in most materials, including plastic, aluminum, and steel.
    120°
    Countersink Angle
    No. of
    Flutes
    Body Dia. Included
    No. of
    Pieces
    Finish
    Shank
    Type
    Container
    Type
    Each
    High-Speed Steel
    31/4", 3/8", 1/2", 5/8", 3/4"5UncoatedRoundPlastic Case000000000000000
     
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