McMaster-Carr logo
    Filter by
    System of Measurement
    Drill Bit Size
    Industrial Info Compare
    Attribute Image
    Shank Size
    Attribute Image
    Drill Bit Point Type
    Industrial Info Compare
    Overall Length
    Attribute Image
    Length Class
    Industrial Info Snippet
    Decimal Size Equivalent
    Maximum Drilling Depth
    Attribute Image
    Bit Style
    Length
    U.S.–Mexico–Canada Agreement (USMCA) Qualifying
    DFARS Specialty Metals
    Export Control Classification Number (ECCN)
    Industrial Info Snippet
    Flute Type
    Number of Flutes
    Sold As
    Flute Direction
    Point Angle
    Industrial Info Snippet
    Attribute Image
    Machine Taper Number
    Morse Taper Diameter
    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)
    4 Products
    About Drill Bits
    industrial info icon

    Compare material, finish, length class, and decimal size equivalents.

    Material

    Shank Type

    Reduced-Shank High-Speed Steel Drill Bits

    Image of Product. Front orientation. Drill Bits. Reduced-Shank High-Speed Steel Drill Bits, Jobbers' Length.

    Jobbers' Length

    Image of Specification. Standard. Front orientation. Contains Border. Standard Point. For Metal.

    Standard

    Cut large holes with drill presses and portable drills that have a standard-size chuck. The shank on these bits has a smaller diameter than the cutting tip. High-speed steel is good for general purpose drilling in most metals. Also known as Silver and Deming bits.
    Jobbers' Length—These bits have the balance of rigidity and length needed for most applications.
    Black Oxide—The dark finish increases wear resistance and reduces friction to improve chip flow, so these bits can last 50% longer than uncoated bits.
    Shank
    Drill Bit
    Size
    Decimal Size
    Equiv.
    Overall
    Lg.
    Max. Drilling
    Dp.
    Type
    Size
    Drill Bit
    Point Type
    Each
    Jobbers' Length
     
    Black Oxide
    53/64"
    		0.8281"
    		6"2.1"Reduced Round/3-Flat
    		1/2"Standard
    		29415A43000000
    53/64"
    		0.8281"
    		6"2.1"Reduced Round
    		1/2"Standard
    		2933A6200000
     

    Reduced-Shank Cobalt Steel Drill Bits

    Image of Product. Front orientation. Drill Bits. Reduced-Shank Cobalt Steel Drill Bits, Jobbers' Length.
    Image of Specification. Split. Front orientation. Contains Border. Split Point. For Metal.

    Jobbers' Length

    Split

    More wear resistant than high-speed steel, these bits cut large holes with tools that have a standard-size chuck. The shank has a smaller diameter than the cutting tip and fits drill presses and portable drills. Cobalt steel bits last at least twice as long as high-speed steel. They can also run up to 25% faster at higher temperatures without being damaged on hard materials such as nickel. Also known as Silver and Deming bits.
    Jobbers' Length—These bits have the balance of rigidity and length needed for most applications.
    Uncoated—Polished to eject chips, these are also known as bright finish bits.
    Shank
    Drill Bit
    Size
    Decimal Size
    Equiv.
    Overall
    Lg.
    Max. Drilling
    Dp.
    Type
    Size
    Drill Bit
    Point Type
    Each
    Jobbers' Length
     
    Uncoated
    53/64"
    		0.8281"
    		6"2.1"Reduced Round
    		1/2"Split
    		8939A53000000
     

    High-Speed Steel Drill Bits

    Image of Product. Front orientation. Drill Bits. High-Speed Steel Drill Bits, Jobbers' Length, Morse Taper Shank.

    Jobbers' Length

    Morse Taper Shank

    Image of Specification. Standard. Front orientation. Contains Border. Standard Point. For Metal.

    Standard

    Our basic drill bits are also the most versatile. Cut holes in a variety of metals, from the softest aluminum to the hardest steel.
    Jobbers' Length—These bits have the balance of rigidity and length needed for most applications.
    Black Oxide—The dark finish increases wear resistance and reduces friction to improve chip flow, so these bits can last 50% longer than uncoated bits.
    Shank
    Drill Bit
    Size
    Decimal Size
    Equiv.
    Overall
    Lg.
    Max. Drilling
    Dp.
    Type
    Size
    Drill Bit
    Point Type
    Each
    Jobbers' Length
     
    Black Oxide
    53/64"
    		0.8281"
    		10 3/4"4.88"Morse Taper
    		Morse 3Standard
    		2929A4160000000
     
    back to top