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    6 Products
    About Countersinks
    industrial info icon

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

    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 SteelAbout 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.
    Manufacturer—We source from trusted manufacturers who vet raw materials for purity and use diamond grinding wheels to machine precise edges. This keeps cutting surfaces smooth and free of microscopic burrs. Because our suppliers clean their wheels more often than other manufacturers, each countersink is consistently ground to create uniform holes every time.
    Dia.
    Pilot
    Uncoated
    For Hole Dia.
    Body
    Shank
    Dia.
    Lg.
    For Screw
    Size
    Overall
    Lg.
    Shank
    Type
    Mfr.
    Each
    0 Flutes
     
    82° Countersink Angle
    1/4" to 33/64"33/64"3/8"1/4"5/32"1/4"
    		2"RoundRepublic Drill2739A64000000
    5/16" to 41/64"41/64"3/8"5/16"5/32"5/16"
    		2 3/16"RoundRepublic Drill2739A6600000
    3/8" to 49/64"49/64"1/2"3/8"5/32"3/8"
    		2 1/2"RoundRepublic Drill2739A6800000
    7/16" to 53/64"53/64"1/2"7/16"7/32"7/16"
    		2 11/16"RoundRepublic Drill2739A7100000
    1/2" to 15/16"15/16"1/2"1/2"1/4"1/2"
    		2 11/16"RoundRepublic Drill2739A7300000
     

    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.
    Manufacturer—We source from trusted manufacturers who vet raw materials for purity and use diamond grinding wheels to machine precise edges. This keeps cutting surfaces smooth and free of microscopic burrs. Because our suppliers clean their wheels more often than other manufacturers, each countersink is consistently ground to create uniform holes every time.
    82°
    Countersink Angle
    No. of
    Flutes
    No. of
    Pieces
    For Hole Dia.
    Finish
    Shank
    Type
    Container
    Type
    Mfr.
    Each
    High-Speed Steel
    051/4" to 15/16"UncoatedRoundWood StandRepublic Drill2739A290000000
     
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