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    42 Products
    About Drill Bits
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    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
    2973A19000000
    13/64"
    0.2031"
    3 3/4"0.81"Round
    13/64"Notched
    2973A2100000
    7/32"
    0.2188"
    3 3/4"0.87"Round
    7/32"Notched
    2973A2200000
    15/64"
    0.2344"
    4"0.93"Round
    15/64"Notched
    2973A2300000
    1/4"
    0.25"
    4"1"Round
    1/4"Notched
    2973A2400000
    17/64"
    0.2656"
    4 1/4"1.06"Round
    17/64"Notched
    2973A2500000
    9/32"
    0.2813"
    4 1/4"1.12"Round
    9/32"Notched
    2973A2600000
    19/64"
    0.2969"
    4 1/2"1.18"Round
    19/64"Notched
    2973A2700000
    5/16"
    0.3125"
    4 1/2"1.25"Round
    5/16"Notched
    2973A2800000
    21/64"
    0.3281"
    4 3/4"1.31"Round
    21/64"Notched
    2973A2900000
    11/32"
    0.3438"
    4 3/4"1.37"Round
    11/32"Notched
    2973A3100000
    23/64"
    0.3594"
    5"1.43"Round
    23/64"Notched
    2973A5200000
    3/8"
    0.375"
    5"1.5"Round
    3/8"Notched
    2973A3300000
    25/64"
    0.3906"
    5 1/4"1.56"Round
    25/64"Notched
    2973A3400000
    13/32"
    0.4063"
    5 1/4"1.62"Round
    13/32"Notched
    2973A3500000
    27/64"
    0.4219"
    5 1/2"1.68"Round
    27/64"Notched
    2973A3600000
    7/16"
    0.4375"
    5 1/2"1.75"Round
    7/16"Notched
    2973A3700000
    15/32"
    0.4688"
    5 3/4"1.87"Round
    15/32"Notched
    2973A3900000
    1/2"
    0.5"
    6"2"Round
    1/2"Notched
    2973A4200000
    17/32"
    0.5313"
    6"2.12"Round
    17/32"Notched
    2973A4300000
    9/16"
    0.5625"
    6"2.25"Round
    9/16"Notched
    2973A4400000
    5/8"
    0.625"
    7"2.5"Round
    5/8"Notched
    2973A4600000
    3/4"
    0.75"
    8"3"Round
    3/4"Notched
    2973A51000000
    5.0 mm0.1968"
    95 mm20 mmRound
    5 mmNotched
    2973A6200000
    5.5 mm
    0.2165"
    95 mm22 mmRound
    5.5 mmNotched
    2973A6300000
    6.0 mm0.2362"
    102 mm24 mmRound
    6 mmNotched
    2973A6400000
    6.5 mm
    0.2559"
    108 mm26 mmRound
    6.5 mmNotched
    2973A6500000
    7.0 mm0.2756"
    108 mm28 mmRound
    7 mmNotched
    2973A6600000
    7.5 mm
    0.2953"
    114 mm30 mmRound
    7.5 mmNotched
    2973A6700000
    8.0 mm0.315"
    114 mm32 mmRound
    8 mmNotched
    2973A6800000
    8.5 mm
    0.3346"
    121 mm34 mmRound
    8.5 mmNotched
    2973A6900000
    9.0 mm0.3543"
    127 mm36 mmRound
    9 mmNotched
    2973A7100000
    9.5 mm
    0.374"
    127 mm38 mmRound
    9.5 mmNotched
    2973A7200000
    10.0 mm0.3937"
    133 mm40 mmRound
    10 mmNotched
    2973A7300000
    10.5 mm
    0.4134"
    140 mm42 mmRound
    10.5 mmNotched
    2973A7400000
    11.0 mm0.4331"
    140 mm44 mmRound
    11 mmNotched
    2973A7500000
    11.5 mm
    0.4528"
    146 mm46 mmRound
    11.5 mmNotched
    2973A7600000
    12.0 mm0.4724"
    146 mm48 mmRound
    12 mmNotched
    2973A7700000
    12.5 mm
    0.4921"
    152 mm50 mmRound
    12.5 mmNotched
    2973A7800000
    13.0 mm0.5118"
    152 mm52 mmRound
    13 mmNotched
    2973A7900000
    13.5 mm
    0.5315"
    152 mm54 mmRound
    13.5 mmNotched
    2973A8100000
    14.0 mm0.5512"
    152 mm56 mmRound
    14 mmNotched
    2973A8200000
     
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