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    42 Products

    Drill Bits for Hardened Steel

    Straight flutes withstand the heavy pressure needed to penetrate hardened steel. These bits cut more aggressively and resist stress better than spiral-flute bits.
    Carbide-Tipped Steel Jobbers' Length
    Image of Product. Straght Flute. Front orientation. Drill Bits. Drill Bits for Hardened Steel, Jobbers' Length, Straight Flute, Round Shank.

    Straght Flute

    The performance of solid carbide but at a lower price point. These jobbers' bits have the balance of rigidity and length needed for most applications. Like carbide bits, they are extremely stronger and maintain their sharp edges when drilling abrasive material. But for the longest life, there is no beating carbide.
    Round Shank—The most common shank type. These fit in the chuck of drill presses and portable drills.
    Notched Point—The chisel-like point keeps the bit centered and clears chips.
    Shank
    Drill Bit
    Size
    Decimal Size
    Equiv.
    Overall
    Lg.
    Max. Drilling
    Dp.
    Flute
    Type
    Type
    Size
    Drill Bit
    Point Type
    No. of
    Flutes
    Each
    Uncoated Carbide Tipped
     
    Inch
    3/16"0.1875"3 1/2"0.75"StraightRound3/16"Notched20000000000000
    13/64"0.2031"3 3/4"0.81"StraightRound13/64"Notched2000000000000
    7/32"0.2188"3 3/4"0.87"StraightRound7/32"Notched2000000000000
    15/64"0.2344"4"0.93"StraightRound15/64"Notched2000000000000
    1/4"0.25"4"1"StraightRound1/4"Notched2000000000000
    17/64"0.2656"4 1/4"1.06"StraightRound17/64"Notched2000000000000
    9/32"0.2813"4 1/4"1.12"StraightRound9/32"Notched2000000000000
    19/64"0.2969"4 1/2"1.18"StraightRound19/64"Notched2000000000000
    5/16"0.3125"4 1/2"1.25"StraightRound5/16"Notched2000000000000
    21/64"0.3281"4 3/4"1.31"StraightRound21/64"Notched2000000000000
    11/32"0.3438"4 3/4"1.37"StraightRound11/32"Notched2000000000000
    23/64"0.3594"5"1.43"StraightRound23/64"Notched2000000000000
    3/8"0.375"5"1.5"StraightRound3/8"Notched2000000000000
    25/64"0.3906"5 1/4"1.56"StraightRound25/64"Notched2000000000000
    13/32"0.4063"5 1/4"1.62"StraightRound13/32"Notched2000000000000
    27/64"0.4219"5 1/2"1.68"StraightRound27/64"Notched2000000000000
    7/16"0.4375"5 1/2"1.75"StraightRound7/16"Notched2000000000000
    15/32"0.4688"5 3/4"1.87"StraightRound15/32"Notched2000000000000
    1/2"0.5"6"2"StraightRound1/2"Notched2000000000000
    17/32"0.5313"6"2.12"StraightRound17/32"Notched2000000000000
    9/16"0.5625"6"2.25"StraightRound9/16"Notched2000000000000
    5/8"0.625"7"2.5"StraightRound5/8"Notched2000000000000
    3/4"0.75"8"3"StraightRound3/4"Notched20000000000000
     
    Metric
    5.0 mm0.1968"95 mm20 mmStraightRound5 mmNotched2000000000000
    5.5 mm0.2165"95 mm22 mmStraightRound5.5 mmNotched2000000000000
    6.0 mm0.2362"102 mm24 mmStraightRound6 mmNotched2000000000000
    6.5 mm0.2559"108 mm26 mmStraightRound6.5 mmNotched2000000000000
    7.0 mm0.2756"108 mm28 mmStraightRound7 mmNotched2000000000000
    7.5 mm0.2953"114 mm30 mmStraightRound7.5 mmNotched2000000000000
    8.0 mm0.315"114 mm32 mmStraightRound8 mmNotched2000000000000
    8.5 mm0.3346"121 mm34 mmStraightRound8.5 mmNotched2000000000000
    9.0 mm0.3543"127 mm36 mmStraightRound9 mmNotched2000000000000
    9.5 mm0.374"127 mm38 mmStraightRound9.5 mmNotched2000000000000
    10.0 mm0.3937"133 mm40 mmStraightRound10 mmNotched2000000000000
    10.5 mm0.4134"140 mm42 mmStraightRound10.5 mmNotched2000000000000
    11.0 mm0.4331"140 mm44 mmStraightRound11 mmNotched2000000000000
    11.5 mm0.4528"146 mm46 mmStraightRound11.5 mmNotched2000000000000
    12.0 mm0.4724"146 mm48 mmStraightRound12 mmNotched2000000000000
    12.5 mm0.4921"152 mm50 mmStraightRound12.5 mmNotched2000000000000
    13.0 mm0.5118"152 mm52 mmStraightRound13 mmNotched2000000000000
    13.5 mm0.5315"152 mm54 mmStraightRound13.5 mmNotched2000000000000
    14.0 mm0.5512"152 mm56 mmStraightRound14 mmNotched2000000000000
     
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