McMaster-Carr logo
    Filter by
    For Use On
    System of Measurement
    Length Class
    Industrial Info Snippet
    Flute Type
    Flute Direction
    Shank Type
    Point Angle
    Industrial Info Snippet
    Attribute Image
    Bit Style
    Maximum Hardness
    Number of Flutes
    Sold As
    DFARS Specialty Metals
    Export Control Classification Number (ECCN)
    Industrial Info Snippet
    Hardness
    Enter e-mail addresses in the fields below
    Message
    Cancel
    Comments
    E-mail address (if you would like a response)
    42 Products
    About Drill Bits
    industrial info icon

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

    Carbide-Tipped Drill Bits for Hardened Steel

    Image of Product. Front orientation. Drill Bits. Carbide-Tipped Drill Bits for Hardened Steel, Jobbers' Length, Round Shank.

    Jobbers' Length

    Round Shank

    Straight flutes withstand the heavy pressure needed to penetrate hardened steel. These bits cut more aggressively and resist stress better than spiral-flute bits. A lower-priced alternative to solid carbide, they stay sharp when drilling abrasive material but won’t last as long.
    Jobbers' Length—These bits have the balance of rigidity and length needed for most applications.
    Shank
    Drill Bit
    Size
    Decimal Size
    Equiv.
    Overall
    Lg.
    Max. Drilling
    Dp.
    Type
    Size
    Drill Bit
    Point Type
    Each
    Jobbers' Length
     
    Uncoated
    3/16"
    0.1875"
    3 1/2"0.75"Round
    3/16"Notched
    0000000000000
    13/64"
    0.2031"
    3 3/4"0.81"Round
    13/64"Notched
    000000000000
    7/32"
    0.2188"
    3 3/4"0.87"Round
    7/32"Notched
    000000000000
    15/64"
    0.2344"
    4"0.93"Round
    15/64"Notched
    000000000000
    1/4"
    0.25"
    4"1"Round
    1/4"Notched
    000000000000
    17/64"
    0.2656"
    4 1/4"1.06"Round
    17/64"Notched
    000000000000
    9/32"
    0.2813"
    4 1/4"1.12"Round
    9/32"Notched
    000000000000
    19/64"
    0.2969"
    4 1/2"1.18"Round
    19/64"Notched
    000000000000
    5/16"
    0.3125"
    4 1/2"1.25"Round
    5/16"Notched
    000000000000
    21/64"
    0.3281"
    4 3/4"1.31"Round
    21/64"Notched
    000000000000
    11/32"
    0.3438"
    4 3/4"1.37"Round
    11/32"Notched
    000000000000
    23/64"
    0.3594"
    5"1.43"Round
    23/64"Notched
    000000000000
    3/8"
    0.375"
    5"1.5"Round
    3/8"Notched
    000000000000
    25/64"
    0.3906"
    5 1/4"1.56"Round
    25/64"Notched
    000000000000
    13/32"
    0.4063"
    5 1/4"1.62"Round
    13/32"Notched
    000000000000
    27/64"
    0.4219"
    5 1/2"1.68"Round
    27/64"Notched
    000000000000
    7/16"
    0.4375"
    5 1/2"1.75"Round
    7/16"Notched
    000000000000
    15/32"
    0.4688"
    5 3/4"1.87"Round
    15/32"Notched
    000000000000
    1/2"
    0.5"
    6"2"Round
    1/2"Notched
    000000000000
    17/32"
    0.5313"
    6"2.12"Round
    17/32"Notched
    000000000000
    9/16"
    0.5625"
    6"2.25"Round
    9/16"Notched
    000000000000
    5/8"
    0.625"
    7"2.5"Round
    5/8"Notched
    000000000000
    3/4"
    0.75"
    8"3"Round
    3/4"Notched
    0000000000000
    5.0 mm
    0.1968"
    95 mm20 mmRound
    5 mmNotched
    000000000000
    5.5 mm
    0.2165"
    95 mm22 mmRound
    5.5 mmNotched
    000000000000
    6.0 mm
    0.2362"
    102 mm24 mmRound
    6 mmNotched
    000000000000
    6.5 mm
    0.2559"
    108 mm26 mmRound
    6.5 mmNotched
    000000000000
    7.0 mm
    0.2756"
    108 mm28 mmRound
    7 mmNotched
    000000000000
    7.5 mm
    0.2953"
    114 mm30 mmRound
    7.5 mmNotched
    000000000000
    8.0 mm
    0.315"
    114 mm32 mmRound
    8 mmNotched
    000000000000
    8.5 mm
    0.3346"
    121 mm34 mmRound
    8.5 mmNotched
    000000000000
    9.0 mm
    0.3543"
    127 mm36 mmRound
    9 mmNotched
    000000000000
    9.5 mm
    0.374"
    127 mm38 mmRound
    9.5 mmNotched
    000000000000
    10.0 mm0.3937"
    133 mm40 mmRound
    10 mmNotched
    000000000000
    10.5 mm
    0.4134"
    140 mm42 mmRound
    10.5 mmNotched
    000000000000
    11.0 mm
    0.4331"
    140 mm44 mmRound
    11 mmNotched
    000000000000
    11.5 mm
    0.4528"
    146 mm46 mmRound
    11.5 mmNotched
    000000000000
    12.0 mm
    0.4724"
    146 mm48 mmRound
    12 mmNotched
    000000000000
    12.5 mm
    0.4921"
    152 mm50 mmRound
    12.5 mmNotched
    000000000000
    13.0 mm
    0.5118"
    152 mm52 mmRound
    13 mmNotched
    000000000000
    13.5 mm
    0.5315"
    152 mm54 mmRound
    13.5 mmNotched
    000000000000
    14.0 mm
    0.5512"
    152 mm56 mmRound
    14 mmNotched
    000000000000
     
    back to top