McMaster-Carr logo
    Filter by
    System of Measurement
    Body Diameter
    Drill Bit Size
    Attribute Image
    Sold As
    Shank Size
    Driver Style
    Driver Type
    Number of Flutes
    Grip Style
    Bit-Holding Mechanism
    For Bit Shank Type
    Overall Length
    Length
    DFARS Specialty Metals
    Export Control Classification Number (ECCN)
    Industrial Info Snippet
    Material
    Counterbore Type
    Drill Bit Material
    Forward
    Enter e-mail addresses in the fields below
    Message
    Cancel
    Print
    How can we improve?
    Comments
    E-mail address (if you would like a response)
    3 Products
    About Counterbores
    industrial info icon

    Create flat-bottomed holes, so your screw heads sit flush, recessed, or slightly raised.

    Quick-Change Hex Drill-Bit Counterbores for Wood

    Pop the 1/4" hex shank into a drill chuck, power screwdriver, or impact driver to drill and counterbore a hole in a single step. These counterbores move along the included drill bit and lock into place with set screws to match the length of the screw you're installing.
    Steel
    Image of ProductInUse. Shown with Optional Drill Stop (Sold Separately). Front orientation. Counterbores. Quick-Change Hex Drill-Bit Counterbores for Wood.
    Image of Product. Front orientation. Counterbores. Quick-Change Hex Drill-Bit Counterbores for Wood.

    Shown with Optional Drill

    Stop (Sold Separately)

    Counterbores
    Replacement
    Drill Bits
    Shank
    Black Oxide
    Body
    Dia.
    Overall
    Lg.
    Size
    Type
    No. of
    Flutes
    Max. Hole
    Drilling Dp.
    Drill Bit
    Size
    Each
    Each
    1"4 11/16"1/4"Quick-Change Hex33.7"7/16"
    		000000000000000000000000000
     

    Static-Control Bit Screwdrivers

    Image of Product. Front orientation. Screwdrivers. Static-Control Bit Screwdrivers.
    Fasten a variety of screws on circuit boards and other sensitive electronics, while preventing harmful static shocks. Also known as ESD-safe screwdrivers, these drain static away from your workpiece before it causes damage. Insert a bit (not included) into the chuck to drive multiple screw styles and sizes with a single tool.
    Warning: These screwdrivers conduct electricity. Do not use them near active power sources.
    Chrome-Plated Steel—The bright, shiny plating resists salt water and chemicals better than other finishes and is less likely to wear off.
    Ultra Grip—Designed for maximum comfort and control. The soft plastic coating and contoured shape reduce strain to prevent cramping and soreness during repetitive tasks. They also guarantee a secure grip.
    For Bit Hex
    Shank Size
    Overall
    Lg.
    Material
    Shaft Overall
    Wd.
    Bit-Holding
    Mechanism
    Grip
    Style
    Static Control
    Rating
    Surface Resistivity
    Each
    1/4"4 11/16"Chrome-Plated Steel3/8"Quick-Change ChuckUltra GripStatic Dissipative1× 10^6Ω⋅cm to 1× 10^9Ω⋅cm0000000000000
    back to top