McMaster-Carr logo
    Filter by
    System of Measurement
    Drill Bit Size
    Attribute Image
    Thread Size
    Industrial Info Snippet
    Thread Type
    Number of Flutes
    Thread Length
    Flute Type
    Sold As
    Overall Length
    Attribute Image
    Bit Style
    For Cutting
    USMCA Qualifying
    Drill Bit Point Angle
    Hex Shank Size
    Drill Bit Decimal Size Equivalent
    Finish
    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)
    2 Products

    Tapping Drill Bits

    Drill and thread holes with the same bit. The tap section has a plug chamfer with 3-5 chamfered threads for through holes and blind holes.
    High-Speed Steel—For Fastener Threads
    Image of Product. Spiral Flute. Front orientation. Drill Bits. Tapping Drill Bits, For Cutting Fastener Threads, Spiral Flute.

    Spiral Flute

    Cut threads into holes so screws, bolts, and rods fit snugly. Wear and heat resistant, these bits are versatile for use on a range of materials.
    Uncoated—The most economical option, uncoated bits perform best when used on low-carbon steel and aluminum. Polished to reduce friction, they're also known as bright finish bits.
    Spiral Flute—Pull chips out of the hole to prevent buildup when tapping.
    Square Shank—Use in a tap holder for drill presses and milling machines.
    Plug Chamfer
    Thread
    Size
    Thread
    Lg.
    Drill Bit
    Size
    Overall
    Lg.
    Flute
    Type
    No. of
    Flutes
    Thread
    Type
    Pitch Dia.
    Limit
    Shank
    Type
    Each
    Uncoated
    5-40
    		13/32"38 Ga.1 15/16"Spiral2UNC
    		H2Square0000000000000
     

    Quick-Change Hex Tapping Drill Bits

    Drill and tap with one bit that snaps directly into power screwdrivers, drills, and other tools that accept a 1/4" hex shank.
    High-Speed Steel—For Fastener Threads
    Image of Product. Front orientation. Drill Bits. Quick-Change Hex Tapping Drill Bits, For Cutting Fastener Threads.
    Cut threads into holes so screws, bolts, and rods fit snugly. Wear and heat resistant, these bits are versatile for use on a range of materials.
    Uncoated—The most economical option, uncoated bits perform best when used on low-carbon steel and aluminum. Polished to reduce friction, they're also known as bright finish bits.
    Spiral Flute—Pull chips out of the hole to prevent buildup when tapping.
    Plug Chamfer
    Thread
    Size
    Thread
    Lg.
    Drill Bit
    Size
    Overall
    Lg.
    Flute
    Type
    No. of
    Flutes
    Thread
    Type
    Shank Type
    Each
    Uncoated
    5-40
    		5/16"7/64"1 27/64"Spiral2UNC
    		Quick-Change Hex0000000000000
     
    back to top