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    53 Products
    About Countersinks
    industrial info icon

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

    Fluteless Smooth-Finish Countersinks for Screws

    With a hollow body and single cutting edge, these countersinks make less contact with the hole than solid-body countersinks. The reduced friction minimizes vibration and leaves a more accurate, tight-fitting recess for your screw head.
    High-Speed Steel
    Image of Product. Front orientation. Countersinks. Fluteless Smooth-Finish Countersinks for Screws, 0 Flutes.

    0 Flutes

    These versatile, wear-resistant countersinks cut cleanly in most materials, including plastic, aluminum, and steel.
    Dia.
    Uncoated
    For Hole Dia.
    Body
    Shank
    Overall
    Lg.
    Shank
    Type
    Each
    0 Flutes
     
    82° Countersink Angle
    5/32" to 13/32"7/16"1/4"1 21/32"Round2739A32000000
    3/16" to 17/32"9/16"1/4"1 7/8"Round2739A3300000
    5/16" to 25/32"13/16"1/4"2 1/8"Round2739A4400000
    5/16" to 25/32"13/16"1/2"2 5/8"Round2739A3400000
    7/16" to 7/8"15/16"1/2"2 19/32"Round2739A4500000
    9/16" to 1 1/16"1 1/8"1/2"2 29/32"Round2739A3500000
    5/8" to 1 15/32"1 1/2"1/2"2 7/8"Round2739A46000000
    3/4" to 1 3/4"1 3/4"5/8"3 1/8"Round2739A47000000
    1" to 2"2 1/8"5/8"3 1/2"Round2739A48000000
    1 1/4" to 2 1/2"2 5/8"3/4"3 7/8"Round2739A49000000
     
    90° Countersink Angle
    5/32" to 13/32"7/16"1/4"1 21/32"Round2739A3700000
    3/16" to 17/32"9/16"1/4"1 7/8"Round2739A3800000
    5/16" to 25/32"13/16"1/4"2 1/8"Round2739A8100000
    5/16" to 25/32"13/16"1/2"2 5/8"Round2739A3900000
    9/16" to 1 1/16"1 1/8"1/2"2 29/32"Round2739A4100000
     
    Cobalt Steel
    Image of Product. Front orientation. Countersinks. Fluteless Smooth-Finish Countersinks for Screws, 0 Flutes.

    0 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.
    Dia.
    Uncoated
    For Hole Dia.
    Body
    Shank
    Overall
    Lg.
    Shank
    Type
    Each
    0 Flutes
     
    82° Countersink Angle
    13/64" to 27/64"7/16"1/4"2 1/32"Round2724A122000000
    5/16" to 17/32"9/16"1/4"2"Round2724A13200000
    1/2" to 25/32"13/16"1/2"2 5/8"Round2724A14200000
    3/4" to 1 3/32"1 1/8"1/2"2 7/8"Round2724A15200000
     
    90° Countersink Angle
    13/64" to 27/64"7/16"1/4"2 1/32"Round2724A12300000
    5/16" to 17/32"9/16"1/4"2"Round2724A13300000
    1/2" to 25/32"13/16"1/2"2 5/8"Round2724A14300000
    3/4" to 1 3/32"1 1/8"1/2"2 7/8"Round2724A15300000
     

    Fluteless Smooth-Finish Countersinks with Pilot for Screws

    Cut a smooth, accurate seat for your screw head on the first pass. The built-in pilot centers the countersink while the hollow body prevents chip buildup, vibration, and wobbling.
    High-Speed Steel
    Image of Product. Front orientation. Countersinks. Fluteless Smooth-Finish Countersinks with Pilot for Screws, 0 Flutes.

    0 Flutes

    These versatile, wear-resistant countersinks cut cleanly in most materials, including plastic, aluminum, and steel.
    Dia.
    Pilot
    Uncoated
    For Hole Dia.
    Body
    Shank
    Dia.
    Lg.
    For Screw
    Size
    Overall
    Lg.
    Shank
    Type
    Each
    0 Flutes
     
    82° Countersink Angle
    1/4" to 33/64"33/64"3/8"1/4"5/32"1/4"
    2"Round2739A64000000
    5/16" to 41/64"41/64"3/8"5/16"5/32"5/16"
    2 3/16"Round2739A6600000
    3/8" to 49/64"49/64"1/2"3/8"5/32"3/8"
    2 1/2"Round2739A6800000
    7/16" to 53/64"53/64"1/2"7/16"7/32"7/16"
    2 11/16"Round2739A7100000
    1/2" to 15/16"15/16"1/2"1/2"1/4"1/2"
    2 11/16"Round2739A7300000
     

    Fluteless Smooth-Finish Countersinks with Two Countersinking Ends for Screws

    When one end starts to wear, flip the tool around for a fresh cutting edge. The hollow body minimizes vibration while lifting chips out of the hole for a smooth, accurate finish. Also known as zero-flute countersinks.
    High-Speed Steel
    Image of Product. Front orientation. Countersinks. Fluteless Smooth-Finish Countersinks with Two Countersinking Ends for Screws, 0 Flutes.

    0 Flutes

    These versatile, wear-resistant countersinks cut cleanly in most materials, including plastic, aluminum, and steel.
    Dia.
    Uncoated
    For Hole Dia.
    Body
    Shank
    Overall
    Lg.
    Shank
    Type
    Each
    0 Flutes
     
    82° Countersink Angle
    1/16" to 15/64"1/4"1/4"1 7/8"Round2739A31000000
     
    90° Countersink Angle
    1/16" to 15/64"1/4"1/4"1 7/8"Round2739A3600000
     
    Cobalt Steel
    Image of Product. Front orientation. Countersinks. Fluteless Smooth-Finish Countersinks with Two Countersinking Ends for Screws, 0 Flutes.

    0 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.
    Dia.
    Uncoated
    For Hole Dia.
    Body
    Shank
    Overall
    Lg.
    Shank
    Type
    Each
    0 Flutes
     
    82° Countersink Angle
    3/32" to 15/64"1/4"1/4"1 1/2"Round2724A112000000
     
    90° Countersink Angle
    3/32" to 15/64"1/4"1/4"1 1/2"Round2724A11300000
     

    Fluteless Smooth-Finish Countersink Sets for Screws

    Image of Product. Front orientation. Countersinks. Fluteless Smooth-Finish Countersink Sets for Screws.
    With a hollow body and single cutting edge, these countersinks make less contact with the hole than solid-body countersinks. The reduced friction minimizes vibration and leaves a more accurate, tight-fitting recess for your screw head.
    High-Speed Steel—These versatile, wear-resistant countersinks cut cleanly in most materials, including plastic, aluminum, and steel.
    For Hole Dia.
    82°
    Countersink Angle
    90°
    Countersink Angle
    No. of
    Flutes
    No. of
    Pieces
    1/4" Shank
    1/2" Shank
    Finish
    Shank
    Type
    Container
    Type
    Each
    Each
    High-Speed Steel
    051/16", 5/32", 3/16"5/16", 9/16"UncoatedRoundWood Stand2739A4200000002739A430000000
     

    Fluteless Smooth-Finish Countersink Sets with Pilot for Screws

    Image of Product. Front orientation. Countersinks. Fluteless Smooth-Finish Countersink Sets with Pilot for Screws.
    Cut a smooth, accurate seat for your screw head on the first pass. The built-in pilot centers the countersink while the hollow body prevents chip buildup, vibration, and wobbling.
    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 Hole Dia.
    Finish
    Shank
    Type
    Container
    Type
    Each
    High-Speed Steel
    051/4" to 15/16"UncoatedRoundWood Stand2739A290000000
     

    Fluteless Smooth-Finish Countersinks for Rivets

    With a hollow body and single cutting edge, these countersinks make less contact with the hole than solid-body countersinks. The reduced friction minimizes vibration and leaves a more accurate, tight-fitting recess for your screw head.
    High-Speed Steel
    Image of Product. Front orientation. Countersinks. Fluteless Smooth-Finish Countersinks for Rivets.
    These versatile, wear-resistant countersinks cut cleanly in most materials, including plastic, aluminum, and steel.
    Dia.
    Uncoated
    For Hole Dia.
    Body
    Shank
    Overall
    Lg.
    Shank
    Type
    Each
    0 Flutes
     
    100° Countersink Angle
    5/32" to 13/32"7/16"1/4"1 21/32"Round2739A59000000
    3/16" to 17/32"9/16"1/4"1 7/8"Round2739A6100000
    5/16" to 25/32"13/16"1/2"2 5/8"Round2739A6200000
    9/16" to 1 1/16"1 1/8"1/2"2 29/32"Round2739A6300000
     

    Fluteless Smooth-Finish Countersinks with Two Countersinking Ends for Rivets

    When one end starts to wear, flip the tool around for a fresh cutting edge. The hollow body minimizes vibration while lifting chips out of the hole for a smooth, accurate finish. Also known as zero-flute countersinks.
    High-Speed Steel
    Image of Product. Front orientation. Countersinks. Fluteless Smooth-Finish Countersinks with Two Countersinking Ends for Rivets.
    These versatile, wear-resistant countersinks cut cleanly in most materials, including plastic, aluminum, and steel.
    Dia.
    Uncoated
    For Hole Dia.
    Body
    Shank
    Overall
    Lg.
    Shank
    Type
    Each
    0 Flutes
     
    100° Countersink Angle
    1/16" to 15/64"1/4"1/4"1 7/8"Round2739A58000000
     

    Fluteless Smooth-Finish Countersink Sets for Rivets

    Image of Product. Front orientation. Countersinks. Fluteless Smooth-Finish Countersink Sets for Rivets.
    With a hollow body and single cutting edge, these countersinks make less contact with the hole than solid-body countersinks. The reduced friction minimizes vibration and leaves a more accurate, tight-fitting recess for your screw head.
    High-Speed Steel—These versatile, wear-resistant countersinks cut cleanly in most materials, including plastic, aluminum, and steel.
    For Hole Dia.
    100°
    Countersink Angle
    No. of
    Flutes
    No. of
    Pieces
    1/4" Shank
    1/2" Shank
    Finish
    Shank
    Type
    Container
    Type
    Each
    High-Speed Steel
    051/16", 5/32", 3/16"5/16", 9/16"UncoatedRoundWood Stand2739A280000000
     

    Fluteless Smooth-Finish Countersinks for Lathe Centers

    With a hollow body and single cutting edge, these countersinks make less contact with the hole than solid-body countersinks. The reduced friction minimizes vibration and leaves a more accurate, tight-fitting recess for your screw head.
    High-Speed Steel
    Image of Product. Front orientation. Countersinks. Fluteless Smooth-Finish Countersinks for Lathe Centers, 0 Flutes.

    0 Flutes

    These versatile, wear-resistant countersinks cut cleanly in most materials, including plastic, aluminum, and steel.
    Dia.
    Uncoated
    For Hole Dia.
    Body
    Shank
    Overall
    Lg.
    Shank
    Type
    Each
    0 Flutes
     
    60° Countersink Angle
    3/16" to 13/32"7/16"1/4"1 25/32"Round2739A53000000
    5/16" to 17/32"9/16"1/4"1 15/16"Round2739A5400000
    7/16" to 25/32"13/16"1/4"2 3/8"Round2739A5500000
    7/16" to 25/32"13/16"1/2"2 3/4"Round2739A5600000
    11/16" to 1 3/32"1 1/8"1/2"2 11/64"Round2739A5700000
     
    Cobalt Steel
    Image of Product. Front orientation. Countersinks. Fluteless Smooth-Finish Countersinks for Lathe Centers, 0 Flutes.

    0 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.
    Dia.
    Uncoated
    For Hole Dia.
    Body
    Shank
    Overall
    Lg.
    Shank
    Type
    Each
    0 Flutes
     
    60° Countersink Angle
    13/64" to 27/64"7/16"1/4"2 1/32"Round2724A121000000
    5/16" to 17/32"9/16"1/4"2"Round2724A13100000
    1/2" to 25/32"13/16"1/2"2 5/8"Round2724A14100000
    3/4" to 1 3/32"1 1/8"1/2"2 7/8"Round2724A15100000
     

    Fluteless Smooth-Finish Countersinks with Two Countersinking Ends for Lathe Centers

    When one end starts to wear, flip the tool around for a fresh cutting edge. The hollow body minimizes vibration while lifting chips out of the hole for a smooth, accurate finish. Also known as zero-flute countersinks.
    High-Speed Steel
    Image of Product. Front orientation. Countersinks. Fluteless Smooth-Finish Countersinks with Two Countersinking Ends for Lathe Centers.
    These versatile, wear-resistant countersinks cut cleanly in most materials, including plastic, aluminum, and steel.
    Dia.
    Uncoated
    For Hole Dia.
    Body
    Shank
    Overall
    Lg.
    Shank
    Type
    Each
    0 Flutes
     
    60° Countersink Angle
    1/8" to 15/64"1/4"1/4"1 7/8"Round2739A52000000
     
    Cobalt Steel
    Image of Product. Front orientation. Countersinks. Fluteless Smooth-Finish Countersinks with Two Countersinking Ends for Lathe Centers.
    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.
    Dia.
    Uncoated
    For Hole Dia.
    Body
    Shank
    Overall
    Lg.
    Shank
    Type
    Each
    0 Flutes
     
    60° Countersink Angle
    3/32" to 15/64"1/4"1/4"1 1/2"Round2724A111000000
     

    Fluteless Smooth-Finish Countersink Sets for Lathe Centers

    Image of Product. Front orientation. Countersinks. Fluteless Smooth-Finish Countersink Sets for Lathe Centers.
    With a hollow body and single cutting edge, these countersinks make less contact with the hole than solid-body countersinks. The reduced friction minimizes vibration and leaves a more accurate, tight-fitting recess for your screw head.
    High-Speed Steel—These versatile, wear-resistant countersinks cut cleanly in most materials, including plastic, aluminum, and steel.
    For Hole Dia.
    60°
    Countersink Angle
    No. of
    Flutes
    No. of
    Pieces
    1/4" Shank
    1/2" Shank
    Finish
    Shank
    Type
    Container
    Type
    Each
    High-Speed Steel
    051/8", 3/16", 5/16"7/16", 11/16"UncoatedRoundWood Stand2739A270000000
     
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