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    691 Products

    Drill Bits

    Cut holes in a variety of metals, from the softest aluminum to the hardest steel.
    Carbide Jobbers' Length
    Image of Product. Round Shank. Front orientation. Drill Bits. Drill Bits, Jobbers' Length, Spiral Flute, Round Shank.

    Round Shank

    The hardest and most wear-resistant drill bits you can buy in a length that's rigid enough for most applications. These bits stay sharp at high temperatures and faster speeds for the best performance on hard and difficult-to-machine materials. They last 10 to 20 times longer than their closest alternative, cobalt steel. Carbide can be brittle, however, so these bits require a rigid machine tool holder to prevent breakage and should not be used in hand drilling applications.
    Titanium Nitride (TiN) Coated—Drill at higher speeds and last longer than uncoated bits, especially on materials like hardened steel, iron, and stainless steel.
    Titanium Aluminum Nitride (TiAlN) Coated—No drill bits last longer. These are the best for high-speed, high-temperature drilling of very hard and abrasive materials, including titanium and fiberglass.
    Round Shank—The most common shank type fits in a drill press chuck.
    Four-Facet Point—The most accurate point style, it centers the bit without a pilot hole and keeps the bit stable while drilling hard metals.
    Shank
    Drill Bit
    Size
    Decimal Size
    Equiv.
    Overall
    Lg.
    Max. Drilling
    Dp.
    Flute
    Type
    Type
    Size
    Drill Bit Point
    Type
    No. of
    Flutes
    Each
    Titanium Nitride (TiN) Coated
     
    Inch
    1/64"0.0156"1 1/4"0.2"SpiralRound1/64"Four Facet200000000000000
    1/32"0.0313"1 1/4"0.25"SpiralRound1/32"Four Facet20000000000000
    3/64"0.0469"1 1/2"0.6"SpiralRound3/64"Four Facet20000000000000
    1/16"0.0625"1 1/2"0.6"SpiralRound1/16"Four Facet20000000000000
    5/64"0.0781"1 3/4"0.7"SpiralRound5/64"Four Facet20000000000000
    3/32"0.0938"2"0.8"SpiralRound3/32"Four Facet20000000000000
    7/64"0.1094"2 1/4"1"SpiralRound7/64"Four Facet20000000000000
    1/8"0.125"2 1/4"1"SpiralRound1/8"Four Facet20000000000000
    9/64"0.1406"2 1/2"1.1"SpiralRound9/64"Four Facet20000000000000
    5/32"0.1563"2 1/2"1.1"SpiralRound5/32"Four Facet20000000000000
    11/64"0.1719"2 3/4"1.3"SpiralRound11/64"Four Facet20000000000000
    3/16"0.1875"2 3/4"1.3"SpiralRound3/16"Four Facet20000000000000
    13/64"0.2031"3"1.4"SpiralRound13/64"Four Facet20000000000000
    7/32"0.2188"3"1.4"SpiralRound7/32"Four Facet20000000000000
    15/64"0.2344"3 1/4"1.6"SpiralRound15/64"Four Facet20000000000000
    1/4"0.25"3 1/4"1.6"SpiralRound1/4"Four Facet20000000000000
    17/64"0.2656"3 1/2"1.7"SpiralRound17/64"Four Facet20000000000000
    9/32"0.2813"3 1/2"1.7"SpiralRound9/32"Four Facet20000000000000
    19/64"0.2969"3 3/4"1.9"SpiralRound19/64"Four Facet20000000000000
    5/16"0.3125"3 3/4"1.9"SpiralRound5/16"Four Facet20000000000000
    21/64"0.3281"4"2"SpiralRound21/64"Four Facet20000000000000
    11/32"0.3438"4"2"SpiralRound11/32"Four Facet20000000000000
    23/64"0.3594"4 1/4"2.2"SpiralRound23/64"Four Facet20000000000000
    3/8"0.375"4 1/4"2.2"SpiralRound3/8"Four Facet20000000000000
    25/64"0.3906"4 1/2"2.3"SpiralRound25/64"Four Facet20000000000000
    13/32"0.4063"4 1/2"2.3"SpiralRound13/32"Four Facet20000000000000
    27/64"0.4219"4 1/2"2.3"SpiralRound27/64"Four Facet20000000000000
    7/16"0.4375"4 1/2"2.3"SpiralRound7/16"Four Facet20000000000000
    29/64"0.4531"4 3/4"2.4"SpiralRound29/64"Four Facet200000000000000
    15/32"0.4688"4 3/4"2.4"SpiralRound15/32"Four Facet200000000000000
    1/2"0.5"4 3/4"2.4"SpiralRound1/2"Four Facet200000000000000
    9/16"0.5625"6"3.2"SpiralRound9/16"Four Facet200000000000000
    5/8"0.625"6"3.2"SpiralRound5/8"Four Facet200000000000000
    3/4"0.75"6"3.2"SpiralRound3/4"Four Facet200000000000000
     
    Metric
    1.0 mm0.0394"38 mm13 mmSpiralRound1 mmFour Facet2000000000000
    1.5 mm0.0591"38 mm19 mmSpiralRound1.5 mmFour Facet2000000000000
    2.0 mm0.0757"44 mm22 mmSpiralRound2 mmFour Facet2000000000000
    2.5 mm0.0984"50 mm25 mmSpiralRound2.5 mmFour Facet2000000000000
    3.0 mm0.1181"57 mm32 mmSpiralRound3 mmFour Facet2000000000000
    3.5 mm0.1378"63 mm35 mmSpiralRound3.5 mmFour Facet2000000000000
    4.0 mm0.1575"63 mm35 mmSpiralRound4 mmFour Facet2000000000000
    4.5 mm0.1772"70 mm41 mmSpiralRound4.5 mmFour Facet2000000000000
    5.0 mm0.1968"76 mm44 mmSpiralRound5 mmFour Facet2000000000000
    5.5 mm0.2165"76 mm44 mmSpiralRound5.5 mmFour Facet2000000000000
    6.0 mm0.2362"82 mm50 mmSpiralRound6 mmFour Facet2000000000000
    7.0 mm0.2756"89 mm54 mmSpiralRound7 mmFour Facet2000000000000
    8.0 mm0.315"95 mm60 mmSpiralRound8 mmFour Facet2000000000000
    9.0 mm0.3543"108 mm70 mmSpiralRound9 mmFour Facet2000000000000
    10.0 mm0.3937"114 mm73 mmSpiralRound10 mmFour Facet2000000000000
     
    Wire Gauge
    60 Ga.0.04"1 1/2"0.75"SpiralRound0.04"Four Facet2000000000000
    59 Ga.0.041"1 1/2"0.75"SpiralRound0.041"Four Facet2000000000000
    58 Ga.0.042"1 1/2"0.75"SpiralRound0.042"Four Facet2000000000000
    57 Ga.0.043"1 1/2"0.75"SpiralRound0.043"Four Facet2000000000000
    56 Ga.0.0465"1 1/2"0.6"SpiralRound0.0465"Four Facet20000000000000
    55 Ga.0.052"1 1/2"0.6"SpiralRound0.052"Four Facet20000000000000
    54 Ga.0.055"1 1/2"0.6"SpiralRound0.055"Four Facet20000000000000
    53 Ga.0.0595"1 1/2"0.6"SpiralRound0.0595"Four Facet20000000000000
    52 Ga.0.0635"1 1/2"0.6"SpiralRound0.0635"Four Facet20000000000000
    51 Ga.0.067"1 1/2"0.6"SpiralRound0.067"Four Facet20000000000000
    50 Ga.0.07"1 3/4"0.7"SpiralRound0.07"Four Facet20000000000000
    49 Ga.0.073"1 3/4"0.7"SpiralRound0.073"Four Facet20000000000000
    48 Ga.0.076"1 3/4"0.7"SpiralRound0.076"Four Facet20000000000000
    47 Ga.0.0785"1 3/4"0.7"SpiralRound0.0785"Four Facet20000000000000
    46 Ga.0.081"1 3/4"0.7"SpiralRound0.081"Four Facet20000000000000
    45 Ga.0.082"1 3/4"0.7"SpiralRound0.082"Four Facet20000000000000
    44 Ga.0.086"2"0.8"SpiralRound0.086"Four Facet20000000000000
    43 Ga.0.089"2"0.8"SpiralRound0.089"Four Facet20000000000000
    42 Ga.0.0935"2"0.8"SpiralRound0.0935"Four Facet20000000000000
    41 Ga.0.096"2"0.8"SpiralRound0.096"Four Facet20000000000000
    40 Ga.0.098"2"0.8"SpiralRound0.098"Four Facet20000000000000
    39 Ga.0.0995"2 1/4"1"SpiralRound0.0995"Four Facet20000000000000
    38 Ga.0.1015"2 1/4"1"SpiralRound0.1015"Four Facet20000000000000
    37 Ga.0.104"2 1/4"1"SpiralRound0.104"Four Facet20000000000000
    36 Ga.0.1065"2 1/4"1"SpiralRound0.1065"Four Facet20000000000000
    35 Ga.0.11"2 1/4"1"SpiralRound0.11"Four Facet20000000000000
    34 Ga.0.111"2 1/4"1"SpiralRound0.111"Four Facet20000000000000
    33 Ga.0.113"2 1/4"1"SpiralRound0.113"Four Facet20000000000000
    32 Ga.0.116"2 1/4"1"SpiralRound0.116"Four Facet20000000000000
    31 Ga.0.12"2 1/4"1"SpiralRound0.12"Four Facet20000000000000
    30 Ga.0.1285"2 1/4"1.1"SpiralRound0.1285"Four Facet20000000000000
    29 Ga.0.136"2 1/2"1.1"SpiralRound0.136"Four Facet20000000000000
    28 Ga.0.1405"2 1/2"1.1"SpiralRound0.1405"Four Facet20000000000000
    27 Ga.0.144"2 1/2"1.1"SpiralRound0.144"Four Facet20000000000000
    26 Ga.0.147"2 1/2"1.1"SpiralRound0.147"Four Facet20000000000000
    25 Ga.0.1495"2 1/2"1.1"SpiralRound0.1495"Four Facet20000000000000
    24 Ga.0.152"2 1/2"1.1"SpiralRound0.152"Four Facet20000000000000
    23 Ga.0.154"2 1/2"1.1"SpiralRound0.154"Four Facet20000000000000
    22 Ga.0.157"2 1/2"1.1"SpiralRound0.157"Four Facet20000000000000
    21 Ga.0.159"2 1/2"1.1"SpiralRound0.159"Four Facet20000000000000
    20 Ga.0.161"2 1/2"1.1"SpiralRound0.161"Four Facet20000000000000
    19 Ga.0.166"2 3/4"1.3"SpiralRound0.166"Four Facet20000000000000
    18 Ga.0.1695"2 3/4"1.3"SpiralRound0.1695"Four Facet20000000000000
    17 Ga.0.173"2 3/4"1.3"SpiralRound0.173"Four Facet20000000000000
    16 Ga.0.177"2 3/4"1.3"SpiralRound0.177"Four Facet20000000000000
    15 Ga.0.18"2 3/4"1.3"SpiralRound0.18"Four Facet20000000000000
    14 Ga.0.182"2 3/4"1.3"SpiralRound0.182"Four Facet20000000000000
    13 Ga.0.185"2 3/4"1.3"SpiralRound0.185"Four Facet20000000000000
    12 Ga.0.189"2 3/4"1.3"SpiralRound0.189"Four Facet20000000000000
    11 Ga.0.191"2 3/4"1.3"SpiralRound0.191"Four Facet20000000000000
    10 Ga.0.1935"2 3/4"1.3"SpiralRound0.1935"Four Facet20000000000000
    9 Ga.0.196"3"1.4"SpiralRound0.196"Four Facet20000000000000
    8 Ga.0.199"3"1.4"SpiralRound0.199"Four Facet20000000000000
    7 Ga.0.201"3"1.4"SpiralRound0.201"Four Facet20000000000000
    6 Ga.0.204"3"1.4"SpiralRound0.204"Four Facet20000000000000
    5 Ga.0.2055"3"1.4"SpiralRound0.2055"Four Facet20000000000000
    4 Ga.0.209"3"1.4"SpiralRound0.209"Four Facet20000000000000
    3 Ga.0.213"3"1.4"SpiralRound0.213"Four Facet20000000000000
    2 Ga.0.221"3"1.4"SpiralRound0.221"Four Facet20000000000000
    1 Ga.0.228"3 1/4"1.4"SpiralRound0.228"Four Facet2000000000000
     
    Titanium Aluminum Nitride (TiAlN) Coated
     
    Inch
    1/64"0.0156"1 1/4"0.2"SpiralRound1/64"Four Facet2000000000000
    1/32"0.0313"1 1/4"0.25"SpiralRound1/32"Four Facet2000000000000
    3/64"0.0469"1 1/2"0.6"SpiralRound3/64"Four Facet2000000000000
    1/16"0.0625"1 1/2"0.6"SpiralRound1/16"Four Facet2000000000000
    5/64"0.0781"1 3/4"0.7"SpiralRound5/64"Four Facet2000000000000
    3/32"0.0938"2"0.8"SpiralRound3/32"Four Facet2000000000000
    7/64"0.1094"2 1/4"1"SpiralRound7/64"Four Facet2000000000000
    1/8"0.125"2 1/4"1"SpiralRound1/8"Four Facet2000000000000
    9/64"0.1406"2 1/2"1.1"SpiralRound9/64"Four Facet2000000000000
    5/32"0.1563"2 1/2"1.1"SpiralRound5/32"Four Facet2000000000000
    11/64"0.1719"2 3/4"1.3"SpiralRound11/64"Four Facet2000000000000
    3/16"0.1875"2 3/4"1.3"SpiralRound3/16"Four Facet2000000000000
    13/64"0.2031"3"1.4"SpiralRound13/64"Four Facet2000000000000
    7/32"0.2188"3"1.4"SpiralRound7/32"Four Facet2000000000000
    15/64"0.2344"3 1/4"1.6"SpiralRound15/64"Four Facet2000000000000
    1/4"0.25"3 1/4"1.6"SpiralRound1/4"Four Facet2000000000000
    17/64"0.2656"3 1/2"1.7"SpiralRound17/64"Four Facet2000000000000
    9/32"0.2813"3 1/2"1.7"SpiralRound9/32"Four Facet2000000000000
    19/64"0.2969"3 3/4"1.9"SpiralRound19/64"Four Facet2000000000000
    5/16"0.3125"3 3/4"1.9"SpiralRound5/16"Four Facet2000000000000
    21/64"0.3281"4"2"SpiralRound21/64"Four Facet2000000000000
    11/32"0.3438"4"2"SpiralRound11/32"Four Facet2000000000000
    23/64"0.3594"4 1/4"2.2"SpiralRound23/64"Four Facet2000000000000
    3/8"0.375"4 1/4"2.2"SpiralRound3/8"Four Facet2000000000000
    25/64"0.3906"4 1/2"2.3"SpiralRound25/64"Four Facet2000000000000
    13/32"0.4063"4 1/2"2.3"SpiralRound13/32"Four Facet2000000000000
    27/64"0.4219"4 1/2"2.3"SpiralRound27/64"Four Facet20000000000000
    7/16"0.4375"4 1/2"2.3"SpiralRound7/16"Four Facet20000000000000
    29/64"0.4531"4 3/4"2.4"SpiralRound29/64"Four Facet20000000000000
    15/32"0.4688"4 3/4"2.4"SpiralRound15/32"Four Facet20000000000000
    1/2"0.5"4 3/4"2.4"SpiralRound1/2"Four Facet20000000000000
    9/16"0.5625"6"3.2"SpiralRound9/16"Four Facet20000000000000
    5/8"0.625"6"3.2"SpiralRound5/8"Four Facet20000000000000
    3/4"0.75"6"3.2"SpiralRound3/4"Four Facet20000000000000
     
    Wire Gauge
    30 Ga.0.1285"2 1/4"1.1"SpiralRound0.1285"Four Facet20000000000000
    29 Ga.0.136"2 1/2"1.4"SpiralRound0.136"Four Facet2000000000000
    28 Ga.0.1405"2 1/2"1.1"SpiralRound0.1405"Four Facet20000000000000
    27 Ga.0.144"2 1/2"1.1"SpiralRound0.144"Four Facet20000000000000
    26 Ga.0.147"2 1/2"1.1"SpiralRound0.147"Four Facet20000000000000
    25 Ga.0.1495"2 1/2"1.1"SpiralRound0.1495"Four Facet2000000000000
    24 Ga.0.152"2 1/2"1.1"SpiralRound0.152"Four Facet20000000000000
    23 Ga.0.154"2 1/2"1.1"SpiralRound0.154"Four Facet20000000000000
    22 Ga.0.157"2 1/2"1.1"SpiralRound0.157"Four Facet20000000000000
    21 Ga.0.159"2 1/2"1.1"SpiralRound0.159"Four Facet2000000000000
    20 Ga.0.161"2 1/2"1.1"SpiralRound0.161"Four Facet20000000000000
    19 Ga.0.166"2 3/4"1.3"SpiralRound0.166"Four Facet20000000000000
    18 Ga.0.1695"2 3/4"1.3"SpiralRound0.1695"Four Facet20000000000000
    17 Ga.0.173"2 3/4"1.3"SpiralRound0.173"Four Facet20000000000000
    16 Ga.0.177"2 3/4"1.3"SpiralRound0.177"Four Facet20000000000000
    15 Ga.0.18"2 3/4"1.3"SpiralRound0.18"Four Facet20000000000000
    14 Ga.0.182"2 3/4"1.3"SpiralRound0.182"Four Facet20000000000000
    13 Ga.0.185"2 3/4"1.3"SpiralRound0.185"Four Facet20000000000000
    12 Ga.0.189"2 3/4"1.3"SpiralRound0.189"Four Facet20000000000000
    11 Ga.0.191"2 3/4"1.3"SpiralRound0.191"Four Facet20000000000000
    10 Ga.0.1935"2 3/4"1.3"SpiralRound0.1935"Four Facet20000000000000
    9 Ga.0.196"3"1.4"SpiralRound0.196"Four Facet20000000000000
    8 Ga.0.199"3"1.4"SpiralRound0.199"Four Facet20000000000000
    7 Ga.0.201"3"1.1"SpiralRound0.201"Four Facet2000000000000
    6 Ga.0.204"3"1.4"SpiralRound0.204"Four Facet20000000000000
    5 Ga.0.2055"3"1.4"SpiralRound0.2055"Four Facet20000000000000
    4 Ga.0.209"3"1.4"SpiralRound0.209"Four Facet20000000000000
    3 Ga.0.213"3"1.4"SpiralRound0.213"Four Facet20000000000000
    2 Ga.0.221"3"1.4"SpiralRound0.221"Four Facet20000000000000
    1 Ga.0.228"3 1/4"1.4"SpiralRound0.228"Four Facet20000000000000
     
    Carbide Short Length
    Image of Product. Round Shank. Front orientation. Drill Bits. Drill Bits, Short Length, Spiral Flute, Round Shank.

    Round Shank

    Our shortest and most rigid bits are also the hardest and most wear resistant. They stay sharp at high temperatures and faster speeds for the straightest holes in hard and difficult-to-machine materials. Used in manufacturing and CNC drilling, they last 10 to 20 times longer than their closest alternative, cobalt steel. Carbide can be brittle, however, so these bits require a rigid machine tool holder to prevent breakage and should not be used in hand drilling applications.
    Titanium Nitride (TiN) Coated—Drill at higher speeds and last longer than uncoated bits, especially on materials like hardened steel, iron, and stainless steel.
    Titanium Aluminum Nitride (TiAlN) Coated—No drill bits last longer. These are the best for high-speed, high-temperature drilling of very hard and abrasive materials, including titanium and fiberglass.
    Round Shank—The most common shank type fits in a drill press chuck.
    Four-Facet Point—The most accurate point style, it centers the bit without a pilot hole and keeps the bit stable while drilling hard metals.
    Shank
    Drill Bit
    Size
    Decimal Size
    Equiv.
    Overall
    Lg.
    Max. Drilling
    Dp.
    Flute
    Type
    Type
    Size
    Drill Bit Point
    Type
    No. of
    Flutes
    Each
    Titanium Nitride (TiN) Coated
     
    Inch
    1/8"0.125"2"0.5"SpiralRound1/8"Four Facet200000000000000
    9/64"0.1406"2 1/2"0.5"SpiralRound9/64"Four Facet20000000000000
    11/64"0.1719"2 1/2"0.6"SpiralRound11/64"Four Facet20000000000000
    3/16"0.1875"2 1/2"0.6"SpiralRound3/16"Four Facet20000000000000
    13/64"0.2031"2 1/2"0.6"SpiralRound13/64"Four Facet20000000000000
    7/32"0.2188"2 1/2"0.8"SpiralRound7/32"Four Facet20000000000000
    1/4"0.25"2 1/2"0.8"SpiralRound1/4"Four Facet20000000000000
    9/32"0.2813"2 1/2"0.8"SpiralRound9/32"Four Facet20000000000000
    5/16"0.3125"2 3/4"1"SpiralRound5/16"Four Facet20000000000000
    3/8"0.375"3"1"SpiralRound3/8"Four Facet20000000000000
    7/16"0.4375"3"1"SpiralRound7/16"Four Facet20000000000000
    1/2"0.5"3"1"SpiralRound1/2"Four Facet20000000000000
     
    Metric
    3.0 mm0.1181"50 mm16 mmSpiralRound3 mmFour Facet200000000000000
    3.5 mm0.1378"63 mm16 mmSpiralRound3.5 mmFour Facet200000000000000
    4.0 mm0.1575"63 mm19 mmSpiralRound4 mmFour Facet200000000000000
    4.5 mm0.1772"63 mm19 mmSpiralRound4.5 mmFour Facet200000000000000
    5.0 mm0.1969"63 mm19 mmSpiralRound5 mmFour Facet200000000000000
    5.5 mm0.2165"63 mm19 mmSpiralRound5.5 mmFour Facet200000000000000
    6.0 mm0.2362"63 mm25 mmSpiralRound6 mmFour Facet200000000000000
    6.5 mm0.2559"63 mm25 mmSpiralRound6.5 mmFour Facet200000000000000
    7.0 mm0.2756"63 mm25 mmSpiralRound7 mmFour Facet200000000000000
    7.5 mm0.2953"70 mm32 mmSpiralRound7.5 mmFour Facet200000000000000
    8.0 mm0.315"70 mm32 mmSpiralRound8 mmFour Facet200000000000000
    8.5 mm0.3346"70 mm32 mmSpiralRound8.5 mmFour Facet200000000000000
    10.0 mm0.3937"75 mm32 mmSpiralRound10 mmFour Facet200000000000000
    10.5 mm0.4134"75 mm32 mmSpiralRound10.5 mmFour Facet200000000000000
    11.0 mm0.4331"75 mm32 mmSpiralRound11 mmFour Facet200000000000000
    11.5 mm0.4528"75 mm32 mmSpiralRound11.5 mmFour Facet200000000000000
    12.0 mm0.4724"75 mm32 mmSpiralRound12 mmFour Facet200000000000000
    12.5 mm0.4921"75 mm32 mmSpiralRound12.5 mmFour Facet200000000000000
     
    Titanium Aluminum Nitride (TiAlN) Coated
     
    Inch
    1/8"0.125"2"0.5"SpiralRound1/8"Four Facet2000000000000
    9/64"0.1406"2 1/2"0.5"SpiralRound9/64"Four Facet2000000000000
    5/32"0.1563"2 1/2"0.6"SpiralRound5/32"Four Facet2000000000000
    11/64"0.1719"2 1/2"0.6"SpiralRound11/64"Four Facet2000000000000
    3/16"0.1875"2 1/2"0.6"SpiralRound3/16"Four Facet2000000000000
    13/64"0.2031"2 1/2"0.6"SpiralRound13/64"Four Facet2000000000000
    7/32"0.2188"2 1/2"0.8"SpiralRound7/32"Four Facet2000000000000
    1/4"0.25"2 1/2"0.8"SpiralRound1/4"Four Facet2000000000000
    9/32"0.2813"2 1/2"0.8"SpiralRound9/32"Four Facet2000000000000
    5/16"0.3125"2 3/4"1"SpiralRound5/16"Four Facet2000000000000
    3/8"0.375"3"1"SpiralRound3/8"Four Facet2000000000000
    1/2"0.5"3"1"SpiralRound1/2"Four Facet2000000000000
     
    Metric
    3.0 mm0.1181"50 mm16 mmSpiralRound3 mmFour Facet20000000000000
    3.5 mm0.1378"63 mm16 mmSpiralRound3.5 mmFour Facet20000000000000
    4.0 mm0.1575"63 mm19 mmSpiralRound4 mmFour Facet20000000000000
    4.5 mm0.1772"63 mm19 mmSpiralRound4.5 mmFour Facet20000000000000
    5.0 mm0.1969"63 mm19 mmSpiralRound5 mmFour Facet20000000000000
    5.5 mm0.2165"63 mm19 mmSpiralRound5.5 mmFour Facet20000000000000
    6.0 mm0.2362"63 mm25 mmSpiralRound6 mmFour Facet20000000000000
    6.5 mm0.2559"63 mm25 mmSpiralRound6.5 mmFour Facet20000000000000
    7.0 mm0.2756"63 mm25 mmSpiralRound7 mmFour Facet20000000000000
    7.5 mm0.2953"70 mm32 mmSpiralRound7.5 mmFour Facet20000000000000
    8.0 mm0.315"70 mm32 mmSpiralRound8 mmFour Facet20000000000000
    8.5 mm0.3346"70 mm32 mmSpiralRound8.5 mmFour Facet20000000000000
    9.0 mm0.3543"75 mm32 mmSpiralRound9 mmFour Facet20000000000000
    10.0 mm0.3937"75 mm32 mmSpiralRound10 mmFour Facet20000000000000
    10.5 mm0.4134"75 mm32 mmSpiralRound10.5 mmFour Facet20000000000000
    12.0 mm0.4724"75 mm32 mmSpiralRound12 mmFour Facet20000000000000
     

    Chip-Clearing Drill Bits

    With flutes that lift chips out of the hole, you don't have to stop drilling to clear these bits manually. The flutes improve coolant flow to dissipate heat and prevent clogs that can damage the bit and ruin the hole.
    Carbide Jobbers' Length
    Image of Product. Parabolic Flute. Front orientation. Drill Bits. Chip-Clearing Drill Bits, Jobbers' Length, Parabolic Flute, Round Shank.

    Parabolic Flute

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

    Standard

    The hardest and most wear-resistant drill bits you can buy in a length that's rigid enough for most applications. These bits stay sharp at high temperatures and faster speeds for the best performance on hard and difficult-to-machine materials. They last 10 to 20 times longer than their closest alternative, cobalt steel. Carbide can be brittle, however, so these bits require a rigid machine tool holder to prevent breakage and should not be used in hand drilling applications.
    Titanium Nitride (TiN) Coated—Drill at higher speeds and last longer than uncoated bits, especially on materials like hardened steel, iron, and stainless steel.
    Parabolic Flute—A U-shaped groove on the flutes cuts faster and clears chips more quickly than high-helix bits, so these are better for drilling deep holes.
    Round Shank—The most common shank type fits in a drill press chuck.
    Standard Point—Good for general purpose drilling. You’ll need to make a pilot hole to center the bit.
    Shank
    Drill Bit
    Size
    Decimal Size
    Equiv.
    Overall
    Lg.
    Max. Drilling
    Dp.
    Flute
    Type
    Type
    Size
    Drill Bit
    Point Type
    No. of
    Flutes
    Each
    Titanium Nitride (TiN) Coated
     
    Inch
    1/8"0.125"2 25/32"1.46"ParabolicRound1/8"Standard20000000000000
    9/64"0.1406"2 29/32"1.56"ParabolicRound9/64"Standard2000000000000
    5/32"0.1563"3 5/32"1.81"ParabolicRound5/32"Standard2000000000000
    3/16"0.1875"3 9/16"2.09"ParabolicRound3/16"Standard2000000000000
    7/32"0.2188"3 25/32"2.24"ParabolicRound7/32"Standard2000000000000
    1/4"0.25"4 1/16"2.44"ParabolicRound1/4"Standard2000000000000
    9/32"0.2813"4 5/16"2.6"ParabolicRound9/32"Standard20000000000000
    5/16"0.3125"4 9/16"2.79"ParabolicRound5/16"Standard20000000000000
    3/8"0.375"5 3/32"3.15"ParabolicRound3/8"Standard20000000000000
    1/2"0.5"6 3/32"3.86"ParabolicRound1/2"Standard20000000000000
     
    Wire Gauge
    30 Ga.0.1285"2 25/32"1.45"ParabolicRound0.1283"Standard20000000000000
    29 Ga.0.136"2 29/32"1.56"ParabolicRound0.1358"Standard2000000000000
    28 Ga.0.1405"2 29/32"1.56"ParabolicRound0.1406"Standard20000000000000
    27 Ga.0.144"3 1/32"1.71"ParabolicRound0.1441"Standard20000000000000
    26 Ga.0.147"3 1/32"1.7"ParabolicRound0.1469"Standard20000000000000
    25 Ga.0.1495"3 1/32"1.7"ParabolicRound0.1496"Standard2000000000000
    24 Ga.0.152"3 5/32"1.82"ParabolicRound0.152"Standard20000000000000
    23 Ga.0.154"3 5/32"1.81"ParabolicRound0.1539"Standard20000000000000
    22 Ga.0.157"3 5/32"1.81"ParabolicRound0.1571"Standard20000000000000
    21 Ga.0.159"3 5/16"1.93"ParabolicRound0.1591"Standard2000000000000
    20 Ga.0.161"3 5/16"1.92"ParabolicRound0.161"Standard20000000000000
    19 Ga.0.166"3 5/16"1.92"ParabolicRound0.1661"Standard20000000000000
    18 Ga.0.1695"3 5/16"1.91"ParabolicRound0.1693"Standard20000000000000
    17 Ga.0.173"3 7/16"1.99"ParabolicRound0.1728"Standard20000000000000
    16 Ga.0.177"3 7/16"1.98"ParabolicRound0.1772"Standard20000000000000
    15 Ga.0.18"3 7/16"1.97"ParabolicRound0.1799"Standard20000000000000
    14 Ga.0.182"3 7/16"1.97"ParabolicRound0.1819"Standard20000000000000
    13 Ga.0.185"3 9/16"2.09"ParabolicRound0.185"Standard20000000000000
    12 Ga.0.189"3 9/16"2.08"ParabolicRound0.189"Standard20000000000000
    11 Ga.0.191"3 9/16"2.08"ParabolicRound0.1909"Standard20000000000000
    10 Ga.0.1935"3 21/32"2.2"ParabolicRound0.1937"Standard20000000000000
    9 Ga.0.196"3 21/32"2.19"ParabolicRound0.1961"Standard20000000000000
    8 Ga.0.199"3 21/32"2.19"ParabolicRound0.1992"Standard20000000000000
    7 Ga.0.201"3 21/32"2.19"ParabolicRound0.2012"Standard2000000000000
    6 Ga.0.204"3 25/32"2.26"ParabolicRound0.2039"Standard20000000000000
    5 Ga.0.2055"3 25/32"2.26"ParabolicRound0.2055"Standard20000000000000
    4 Ga.0.209"3 25/32"2.25"ParabolicRound0.2091"Standard20000000000000
    3 Ga.0.213"3 25/32"2.25"ParabolicRound0.213"Standard2000000000000
    2 Ga.0.221"3 29/32"2.36"ParabolicRound0.2209"Standard20000000000000
    1 Ga.0.228"3 29/32"2.35"ParabolicRound0.228"Standard20000000000000
     

    Precise-Cut Drill Bits

    Produce holes so precise that you don’t need to finish them with a reamer. The double-edged flutes keep these bits centered to drill straighter and smoother than other types, especially in hard metals like iron and titanium and composites such as fiberglass. Also known as double-margin drill bits.
    Carbide Jobbers' Length
    Image of Product. Front orientation. Drill Bits. Precise-Cut Drill Bits, Jobbers' Length, Double Margin Flute, Round Shank.

    Double Margin Flute

    Round Shank

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

    Standard

    The hardest and most wear-resistant drill bits you can buy in a length that's rigid enough for most applications. These bits stay sharp at high temperatures and faster speeds for the best performance on hard and difficult-to-machine materials. They last 10 to 20 times longer than their closest alternative, cobalt steel. Carbide can be brittle, however, so these bits require a rigid machine tool holder to prevent breakage and should not be used in hand drilling applications.
    Aluminum Titanium Nitride (AlTiN) Coated—The hardest and most wear-resistant coating, especially at high temperatures. These bits are best for hard and abrasive materials, such as iron and titanium.
    Round Shank—The most common shank type fits in a drill press chuck.
    Standard Point—Good for general purpose drilling. You’ll need to make a pilot hole to center the bit.
    Shank
    Drill Bit
    Size
    Decimal Size
    Equiv.
    Overall
    Lg.
    Max. Drilling
    Dp.
    Flute Type
    Type
    Size
    Drill Bit
    Point Type
    No. of
    Flutes
    Each
    Aluminum Titanium Nitride (AlTiN) Coated
     
    Inch
    1/8"0.125"2 1/2"0.75"Double MarginRound1/4"Standard20000000000000
    5/32"0.1563"2 5/8"0.87"Double MarginRound1/4"Standard2000000000000
    11/64"0.1719"2 5/8"0.87"Double MarginRound1/4"Standard2000000000000
    3/16"0.1875"2 5/8"1"Double MarginRound1/4"Standard2000000000000
    13/64"0.2031"2 5/8"1"Double MarginRound1/4"Standard2000000000000
    7/32"0.2188"2 5/8"1"Double MarginRound1/4"Standard2000000000000
    1/4"0.25"3 1/8"1.31"Double MarginRound1/4"Standard2000000000000
    9/32"0.2813"3 1/8"1.56"Double MarginRound5/16"Standard20000000000000
    5/16"0.3125"3 1/8"1.56"Double MarginRound5/16"Standard20000000000000
    3/8"0.375"3 1/2"1.84"Double MarginRound3/8"Standard20000000000000
    1/2"0.5"4 1/4"2.31"Double MarginRound1/2"Standard20000000000000
     

    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 Short Length
    Image of Product. Straght Flute. Front orientation. Drill Bits. Drill Bits for Hardened Steel, Short Length, Straight Flute, Round Shank.
    Image of Specification. Split. Front orientation. Contains Border. Split Point. For Metal.

    Straght Flute

    Split

    Our shortest and most rigid bits are also the hardest and most wear resistant. They stay sharp at high temperatures and faster speeds for the straightest holes in hard and difficult-to-machine materials. Used in manufacturing and CNC drilling, they last 10 to 20 times longer than their closest alternative, cobalt steel. Carbide can be brittle, however, so these bits require a rigid machine tool holder to prevent breakage and should not be used in hand drilling applications.
    Titanium Nitride (TiN) Coated—Drill at higher speeds and last longer than uncoated bits, especially on materials like hardened steel, iron, and stainless steel.
    Uncoated—Excellent for a range of metals, they perform best when used on steel, aluminum, brass, and bronze.
    Straight Flute—Withstand heavy pressure without slipping when drilling hardened steel and other tough materials.
    Round Shank—The most common shank type fits in a drill press chuck.
    Split Point—Starts cutting on contact so you don’t need a pilot hole. The point also keeps the bit centered for straight and accurate holes, even with a portable drill.
    Four-Facet Point—The most accurate point style, it centers the bit without a pilot hole and keeps the bit stable while drilling hard metals.
    Shank
    Drill Bit
    Size
    Decimal Size
    Equiv.
    Overall
    Lg.
    Max. Drilling
    Dp.
    Flute
    Type
    Type
    Size
    Drill Bit Point
    Type
    No. of
    Flutes
    Each
    Titanium Nitride (TiN) Coated
     
    Inch
    1/16"0.0625"1 1/2"0.3"StraightRound1/16"Split20000000000000
    5/64"0.0781"2"0.4"StraightRound5/64"Split2000000000000
    3/32"0.0938"2"0.4"StraightRound3/32"Split2000000000000
    7/64"0.1094"2 1/4"0.5"StraightRound7/64"Split2000000000000
    1/8"0.125"2 1/4"0.5"StraightRound1/8"Split2000000000000
    9/64"0.1406"2 1/2"0.5"StraightRound9/64"Split2000000000000
    5/32"0.1563"2 1/2"0.6"StraightRound5/32"Split2000000000000
    11/64"0.1719"2 1/2"0.6"StraightRound11/64"Split2000000000000
    3/16"0.1875"2 1/2"0.6"StraightRound3/16"Split2000000000000
    13/64"0.2031"2 1/2"0.8"StraightRound13/64"Split2000000000000
    7/32"0.2188"2 1/2"0.8"StraightRound7/32"Split2000000000000
    15/64"0.2344"2 1/2"0.8"StraightRound15/64"Split2000000000000
    1/4"0.25"2 1/2"0.8"StraightRound1/4"Split2000000000000
    17/64"0.2656"2 1/2"0.8"StraightRound17/64"Split2000000000000
    9/32"0.2813"2 1/2"0.8"StraightRound9/32"Split2000000000000
    5/16"0.3125"2 1/2"1"StraightRound5/16"Split2000000000000
    3/8"0.375"3"1"StraightRound3/8"Split2000000000000
    7/16"0.4375"3"1"StraightRound7/16"Split2000000000000
    1/2"0.5"3"1"StraightRound1/2"Split20000000000000
     
    Wire Gauge
    56 Ga.0.0465"1 1/2"0.3"StraightRound0.0465"Split20000000000000
    55 Ga.0.052"1 1/2"0.3"StraightRound0.052"Split20000000000000
    54 Ga.0.055"1 1/2"0.3"StraightRound0.055"Split20000000000000
    53 Ga.0.0595"1 1/2"0.3"StraightRound0.0595"Split20000000000000
    52 Ga.0.0635"1 1/2"0.3"StraightRound0.0635"Split20000000000000
    51 Ga.0.067"1 1/2"0.3"StraightRound0.067"Split20000000000000
    50 Ga.0.07"2"0.3"StraightRound0.07"Split20000000000000
    49 Ga.0.073"2"0.3"StraightRound0.073"Split20000000000000
    48 Ga.0.076"2"0.4"StraightRound0.076"Split20000000000000
    47 Ga.0.0785"2"0.4"StraightRound0.0785"Split20000000000000
    46 Ga.0.081"2"0.4"StraightRound0.081"Split20000000000000
    45 Ga.0.082"2"0.4"StraightRound0.082"Split20000000000000
    44 Ga.0.086"2"0.4"StraightRound0.086"Split20000000000000
    43 Ga.0.089"2"0.4"StraightRound0.089"Split20000000000000
    42 Ga.0.0935"2"0.4"StraightRound0.0935"Split20000000000000
    41 Ga.0.096"2"0.4"StraightRound0.096"Split20000000000000
    40 Ga.0.098"2"0.4"StraightRound0.098"Split20000000000000
    39 Ga.0.0995"2 1/4"0.5"StraightRound0.0995"Split20000000000000
    38 Ga.0.1015"2 1/4"0.5"StraightRound0.1015"Split20000000000000
    37 Ga.0.104"2 1/4"0.5"StraightRound0.104"Split20000000000000
    36 Ga.0.1065"2 1/4"0.5"StraightRound0.1065"Split20000000000000
    35 Ga.0.11"2 1/4"0.5"StraightRound0.11"Split20000000000000
    34 Ga.0.111"2 1/4"0.5"StraightRound0.111"Split20000000000000
    33 Ga.0.113"2 1/4"0.5"StraightRound0.113"Split20000000000000
    32 Ga.0.116"2 1/4"0.5"StraightRound0.116"Split20000000000000
    31 Ga.0.12"2 1/4"0.5"StraightRound0.12"Split2000000000000
    30 Ga.0.1285"2 1/4"0.5"StraightRound0.1285"Split20000000000000
    29 Ga.0.136"2 1/2"0.5"StraightRound0.136"Split20000000000000
    28 Ga.0.1405"2 1/2"0.5"StraightRound0.1405"Split20000000000000
    27 Ga.0.144"2 1/2"0.5"StraightRound0.144"Split20000000000000
    26 Ga.0.147"2 1/2"0.5"StraightRound0.147"Split20000000000000
    25 Ga.0.1495"2 1/2"0.5"StraightRound0.1495"Split20000000000000
    24 Ga.0.152"2 1/2"0.5"StraightRound0.152"Split20000000000000
    23 Ga.0.154"2 1/2"0.5"StraightRound0.154"Split20000000000000
    22 Ga.0.157"2 1/2"0.6"StraightRound0.157"Split2000000000000
    21 Ga.0.159"2 1/2"0.6"StraightRound0.159"Split20000000000000
    20 Ga.0.161"2 1/2"0.6"StraightRound0.161"Split20000000000000
    19 Ga.0.166"2 1/2"0.6"StraightRound0.166"Split20000000000000
    18 Ga.0.1695"2 1/2"0.6"StraightRound0.1695"Split20000000000000
    17 Ga.0.173"2 1/2"0.6"StraightRound0.173"Split20000000000000
    16 Ga.0.177"2 1/2"0.6"StraightRound0.177"Split20000000000000
    15 Ga.0.18"2 1/2"0.6"StraightRound0.18"Split20000000000000
    14 Ga.0.182"2 1/2"0.6"StraightRound0.182"Split20000000000000
    13 Ga.0.185"2 1/2"0.6"StraightRound0.185"Split20000000000000
    12 Ga.0.189"2 1/2"0.6"StraightRound0.189"Split20000000000000
    11 Ga.0.191"2 1/2"0.6"StraightRound0.191"Split20000000000000
    10 Ga.0.1935"2 1/2"0.6"StraightRound0.1935"Split20000000000000
    9 Ga.0.196"2 1/2"0.8"StraightRound0.196"Split20000000000000
    8 Ga.0.199"2 1/2"0.8"StraightRound0.199"Split20000000000000
    7 Ga.0.201"2 1/2"0.8"StraightRound0.201"Split20000000000000
    6 Ga.0.204"2 1/2"0.8"StraightRound0.204"Split20000000000000
    5 Ga.0.2055"2 1/2"0.8"StraightRound0.2055"Split20000000000000
    4 Ga.0.209"2 1/2"0.8"StraightRound0.209"Split20000000000000
    3 Ga.0.213"2 1/2"0.8"StraightRound0.213"Split20000000000000
    2 Ga.0.221"2 1/2"0.8"StraightRound0.221"Split20000000000000
    1 Ga.0.228"2 1/2"0.8"StraightRound0.228"Split20000000000000
     
    Uncoated
     
    Inch
    1/16"0.0625"1 1/2"0.3"StraightRound1/16"Four Facet2000000000000
    5/64"0.0781"2"0.4"StraightRound5/64"Four Facet2000000000000
    3/32"0.0938"2"0.4"StraightRound3/32"Four Facet2000000000000
    7/64"0.1094"2 1/4"0.5"StraightRound7/64"Four Facet2000000000000
    1/8"0.125"2 1/4"0.5"StraightRound1/8"Four Facet2000000000000
    9/64"0.1406"2 1/2"0.5"StraightRound9/64"Four Facet2000000000000
    5/32"0.1563"2 1/2"0.6"StraightRound5/32"Four Facet2000000000000
    11/64"0.1719"2 1/2"0.6"StraightRound11/64"Four Facet2000000000000
    3/16"0.1875"2 1/2"0.6"StraightRound3/16"Four Facet2000000000000
    13/64"0.2031"2 1/2"0.8"StraightRound13/64"Four Facet2000000000000
    7/32"0.2188"2 1/2"0.8"StraightRound7/32"Four Facet2000000000000
    15/64"0.2344"2 1/2"0.8"StraightRound15/64"Four Facet2000000000000
    1/4"0.25"2 1/2"0.8"StraightRound1/4"Four Facet2000000000000
    17/64"0.2656"2 1/2"0.8"StraightRound17/64"Four Facet2000000000000
    9/32"0.2813"2 1/2"0.8"StraightRound9/32"Four Facet2000000000000
    5/16"0.3125"2 1/2"1"StraightRound5/16"Four Facet2000000000000
    3/8"0.375"3"1"StraightRound3/8"Four Facet2000000000000
    7/16"0.4375"3"1"StraightRound7/16"Four Facet2000000000000
    1/2"0.5"3"1"StraightRound1/2"Four Facet20000000000000
     
    Metric
    1.0 mm0.0394"38 mm7.6 mmStraightRound1 mmSplit2000000000000
    1.5 mm0.0591"38 mm7.6 mmStraightRound1.5 mmSplit2000000000000
    2.0 mm0.0787"50 mm9.6 mmStraightRound2 mmSplit2000000000000
    2.5 mm0.0984"50 mm9.6 mmStraightRound2.5 mmSplit2000000000000
    3.0 mm0.1181"57 mm12.8 mmStraightRound3 mmSplit2000000000000
    4.0 mm0.1575"63 mm15.2 mmStraightRound4 mmSplit2000000000000
    4.5 mm0.1772"63 mm15.2 mmStraightRound4.5 mmSplit2000000000000
    5.0 mm0.1968"63 mm20 mmStraightRound5 mmSplit2000000000000
    6.0 mm0.2362"63 mm20 mmStraightRound6 mmSplit2000000000000
    8.0 mm0.315"63 mm25.6 mmStraightRound8 mmSplit2000000000000
     
    Wire Gauge
    60 Ga.0.04"1 1/2"0.3"StraightRound0.04"Four Facet2000000000000
    59 Ga.0.041"1 1/2"0.3"StraightRound0.041"Four Facet2000000000000
    58 Ga.0.042"1 1/2"0.3"StraightRound0.042"Four Facet2000000000000
    57 Ga.0.043"1 1/2"0.3"StraightRound0.043"Four Facet2000000000000
    56 Ga.0.0465"1 1/2"0.3"StraightRound0.0465"Four Facet2000000000000
    55 Ga.0.052"1 1/2"0.3"StraightRound0.052"Four Facet2000000000000
    54 Ga.0.055"1 1/2"0.3"StraightRound0.055"Four Facet2000000000000
    53 Ga.0.0595"1 1/2"0.3"StraightRound0.0595"Four Facet2000000000000
    52 Ga.0.0635"1 1/2"0.3"StraightRound0.0635"Four Facet2000000000000
    51 Ga.0.067"1 1/2"0.3"StraightRound0.067"Four Facet200000000000
    50 Ga.0.07"2"0.3"StraightRound0.07"Four Facet2000000000000
    49 Ga.0.073"2"0.3"StraightRound0.073"Four Facet2000000000000
    48 Ga.0.076"2"0.4"StraightRound0.076"Four Facet2000000000000
    47 Ga.0.0785"2"0.4"StraightRound0.0785"Four Facet2000000000000
    46 Ga.0.081"2"0.4"StraightRound0.081"Four Facet2000000000000
    45 Ga.0.082"2"0.4"StraightRound0.082"Four Facet2000000000000
    44 Ga.0.086"2"0.4"StraightRound0.086"Four Facet2000000000000
    43 Ga.0.089"2"0.4"StraightRound0.089"Four Facet2000000000000
    42 Ga.0.0935"2"0.4"StraightRound0.0935"Four Facet2000000000000
    41 Ga.0.096"2"0.4"StraightRound0.096"Four Facet200000000000
    40 Ga.0.098"2"0.4"StraightRound0.098"Four Facet2000000000000
    39 Ga.0.0995"2 1/4"0.5"StraightRound0.0995"Four Facet2000000000000
    38 Ga.0.1015"2 1/4"0.5"StraightRound0.1015"Four Facet2000000000000
    37 Ga.0.104"2 1/4"0.5"StraightRound0.104"Four Facet2000000000000
    36 Ga.0.1065"2 1/4"0.5"StraightRound0.1065"Four Facet2000000000000
    35 Ga.0.11"2 1/4"0.5"StraightRound0.11"Four Facet2000000000000
    34 Ga.0.111"2 1/4"0.5"StraightRound0.111"Four Facet2000000000000
    33 Ga.0.113"2 1/4"0.5"StraightRound0.113"Four Facet2000000000000
    32 Ga.0.116"2 1/4"0.5"StraightRound0.116"Four Facet2000000000000
    31 Ga.0.12"2 1/4"0.5"StraightRound0.12"Four Facet200000000000
    30 Ga.0.1285"2 1/4"0.5"StraightRound0.1285"Four Facet2000000000000
    29 Ga.0.136"2 1/2"0.5"StraightRound0.136"Four Facet2000000000000
    28 Ga.0.1405"2 1/2"0.5"StraightRound0.1405"Four Facet2000000000000
    27 Ga.0.144"2 1/2"0.5"StraightRound0.144"Four Facet2000000000000
    26 Ga.0.147"2 1/2"0.5"StraightRound0.147"Four Facet2000000000000
    25 Ga.0.1495"2 1/2"0.5"StraightRound0.1495"Four Facet2000000000000
    24 Ga.0.152"2 1/2"0.5"StraightRound0.152"Four Facet2000000000000
    23 Ga.0.154"2 1/2"0.5"StraightRound0.154"Four Facet2000000000000
    22 Ga.0.157"2 1/2"0.6"StraightRound0.157"Four Facet2000000000000
    21 Ga.0.159"2 1/2"0.6"StraightRound0.159"Four Facet200000000000
    20 Ga.0.161"2 1/2"0.6"StraightRound0.161"Four Facet2000000000000
    19 Ga.0.166"2 1/2"0.6"StraightRound0.166"Four Facet2000000000000
    18 Ga.0.1695"2 1/2"0.6"StraightRound0.1695"Four Facet2000000000000
    17 Ga.0.173"2 1/2"0.6"StraightRound0.173"Four Facet2000000000000
    16 Ga.0.177"2 1/2"0.6"StraightRound0.177"Four Facet2000000000000
    15 Ga.0.18"2 1/2"0.6"StraightRound0.18"Four Facet2000000000000
    14 Ga.0.182"2 1/2"0.6"StraightRound0.182"Four Facet2000000000000
    13 Ga.0.185"2 1/2"0.6"StraightRound0.185"Four Facet2000000000000
    12 Ga.0.189"2 1/2"0.6"StraightRound0.189"Four Facet2000000000000
    11 Ga.0.191"2 1/2"0.6"StraightRound0.191"Four Facet200000000000
    10 Ga.0.1935"2 1/2"0.6"StraightRound0.1935"Four Facet2000000000000
    9 Ga.0.196"2 1/2"0.8"StraightRound0.196"Four Facet2000000000000
    8 Ga.0.199"2 1/2"0.8"StraightRound0.199"Four Facet2000000000000
    7 Ga.0.201"2 1/2"0.8"StraightRound0.201"Four Facet2000000000000
    6 Ga.0.204"2 1/2"0.8"StraightRound0.204"Four Facet2000000000000
    5 Ga.0.2055"2 1/2"0.8"StraightRound0.2055"Four Facet2000000000000
    4 Ga.0.209"2 1/2"0.8"StraightRound0.209"Four Facet2000000000000
    3 Ga.0.213"2 1/2"0.8"StraightRound0.213"Four Facet2000000000000
    2 Ga.0.221"2 1/2"0.8"StraightRound0.221"Four Facet2000000000000
    1 Ga.0.228"2 1/2"0.8"StraightRound0.228"Four Facet200000000000
     
    Letter Size
    A0.234"2 1/2"0.8"StraightRound0.234"Four Facet20000000000000
    B0.238"2 1/2"0.8"StraightRound0.238"Four Facet20000000000000
    C0.242"2 1/2"0.8"StraightRound0.242"Four Facet20000000000000
    D0.246"2 1/2"0.8"StraightRound0.246"Four Facet20000000000000
    E0.25"2 1/2"0.8"StraightRound1/4"Four Facet20000000000000
    F0.257"2 1/2"0.8"StraightRound0.257"Four Facet20000000000000
    G0.261"2 1/2"0.8"StraightRound0.261"Four Facet20000000000000
    H0.266"2 1/2"0.8"StraightRound0.266"Four Facet20000000000000
    I0.272"2 1/2"0.8"StraightRound0.272"Four Facet20000000000000
    J0.277"2 1/2"0.8"StraightRound0.277"Four Facet20000000000000
    K0.281"2 1/2"0.8"StraightRound0.281"Four Facet20000000000000
    L0.29"2 1/2"0.8"StraightRound0.29"Four Facet20000000000000
    M0.295"2 1/2"0.8"StraightRound0.295"Four Facet20000000000000
    N0.302"2 1/2"1"StraightRound0.302"Four Facet20000000000000
    O0.316"2 1/2"1"StraightRound0.316"Four Facet20000000000000
    P0.323"2 1/2"1"StraightRound0.323"Four Facet20000000000000
    Q0.332"3"1"StraightRound0.332"Four Facet20000000000000
    R0.339"3"1"StraightRound0.339"Four Facet20000000000000
    S0.348"3"1"StraightRound0.348"Four Facet20000000000000
    T0.358"3"1"StraightRound0.358"Four Facet20000000000000
    U0.368"3"1"StraightRound0.368"Four Facet20000000000000
    V0.377"3"1"StraightRound0.377"Four Facet20000000000000
    W0.386"3"1"StraightRound0.386"Four Facet20000000000000
    X0.397"3"1"StraightRound0.397"Four Facet20000000000000
    Y0.404"3"1"StraightRound0.404"Four Facet20000000000000
    Z0.413"3"1"StraightRound0.413"Four Facet20000000000000
     

    Hole-Starting Drill Bits

    Create an accurate starting place in your workpiece. Cut an indent with these bits, then continue drilling with a longer bit. The indent prevents slipping so the final hole is centered and precise. Also known as spotting drill bits.
    Carbide Short Length
    Image of Product. Front orientation. Drill Bits. Hole-Starting Drill Bits, Short Length, Spiral Flute, Round Shank.
    Image of Specification. Standard. Front orientation. Contains Border. Standard Point. For Metal.

    Spiral Flute

    Round Shank

    Standard

    Our shortest and most rigid bits are also the hardest and most wear resistant. They stay sharp at high temperatures and faster speeds for the straightest holes in hard and difficult-to-machine materials. Used in manufacturing and CNC drilling, they last 10 to 20 times longer than their closest alternative, cobalt steel. Carbide can be brittle, however, so these bits require a rigid machine tool holder to prevent breakage and should not be used in hand drilling applications.
    Titanium Nitride (TiN) Coated—Drill at higher speeds and last longer than uncoated bits, especially on materials like hardened steel, iron, and stainless steel.
    Titanium Aluminum Nitride (TiAlN) Coated—No drill bits last longer. These are the best for high-speed, high-temperature drilling of very hard and abrasive materials, including titanium and fiberglass.
    90° Point Angle—Chamfers holes that will be followed by a smaller drill bit size.
    120° Point Angle—For holes that will be followed by a drill bit with a point angle from 90° to 118°.
    140° Point Angle—For holes that will be followed by a drill bit with a point angle from 118° to 135°.
    Round Shank—The most common shank type fits in a drill press chuck.
    Standard Point—Perform best in stationary tools, such as a drill press.
    Shank
    90° Point Angle
    120° Point Angle
    140° Point Angle
    Drill Bit
    Size
    Decimal Size
    Equiv.
    Overall
    Lg.
    Max. Drilling
    Dp.
    Flute
    Type
    Type
    Size
    Drill Bit
    Point Type
    No. of
    Flutes
    Each
    Each
    Each
    Titanium Nitride (TiN) Coated
    1/8"0.125"2"1/8"SpiralRound1/8"Standard2000000000000000000000000000000000000000000
    3/16"0.1875"2"3/16"SpiralRound3/16"Standard2000000000000000000000000000000000000000
    1/4"0.25"2 1/2"1/4"SpiralRound1/4"Standard2000000000000000000000000000000000000000
    5/16"0.3125"2 1/2"5/16"SpiralRound5/16"Standard2000000000000000000000000000000000000000
    3/8"0.375"2 1/2"3/8"SpiralRound3/8"Standard2000000000000000000000000000000000000000
    1/2"0.5"3"1/2"SpiralRound1/2"Standard2000000000000000000000000000000000000000
    8 mm0.315"63 mm8 mmSpiralRound8 mmStandard2———0000000000000———0
     
    Titanium Aluminum Nitride (TiAlN) Coated
    1/8"0.125"2"1/8"SpiralRound1/8"Standard2000000000000000000000000000000000000000
    3/16"0.1875"2"3/16"SpiralRound3/16"Standard2000000000000000000000000000000000000000
    1/4"0.25"2 1/2"1/4"SpiralRound1/4"Standard2000000000000000000000000000000000000000
    5/16"0.3125"2 1/2"5/16"SpiralRound5/16"Standard2000000000000000000000000000000000000000
    3/8"0.375"2 1/2"3/8"SpiralRound3/8"Standard2000000000000000000000000000000000000000
    1/2"0.5"3"1/2"SpiralRound1/2"Standard2000000000000000000000000000000000000000
     

    Expanded-Shank Drill Bits

    The shank fits the same-size collet as standard drill bits, so you can spend less time setting up. Because these bits make very small holes, they’re often used for drilling circuit boards.
    Carbide Jobbers' Length
    Image of Product. Front orientation. Drill Bits. Expanded-Shank Drill Bits, Jobbers' Length, Spiral Flute.
    Image of Specification. Standard. Front orientation. Contains Border. Standard Point. For Metal.

    Spiral Flute

    Standard

    The hardest and most wear-resistant drill bits you can buy in a length that's rigid enough for most applications. These bits stay sharp at high temperatures and faster speeds for the best performance on hard and difficult-to-machine materials. They last 10 to 20 times longer than their closest alternative, cobalt steel. Carbide can be brittle, however, so these bits require a rigid machine tool holder to prevent breakage and should not be used in hand drilling applications.
    Titanium Nitride (TiN) Coated—Drill at higher speeds and last longer than uncoated bits, especially on materials like hardened steel, iron, and stainless steel.
    Titanium Aluminum Nitride (TiAlN) Coated—No drill bits last longer. These are the best for high-speed, high-temperature drilling of very hard and abrasive materials, including titanium and fiberglass.
    Standard Point—Good for general purpose drilling. You’ll need to make a pilot hole to center the bit.
    Four-Facet Point—The most accurate point style, it centers the bit without a pilot hole and keeps the bit stable while drilling hard metals.
    Shank
    Drill Bit
    Size
    Decimal Size
    Equiv.
    Overall
    Lg.
    Max. Drilling
    Dp.
    Flute
    Type
    Type
    Size
    Drill Bit Point
    Type
    No. of
    Flutes
    Each
    Titanium Nitride (TiN) Coated
     
    Inch
    1/32"0.0312"1 1/2"0.19"SpiralExpanded Round1/8"Four Facet200000000000000
    3/64"0.0469"1 1/2"0.3"SpiralExpanded Round1/8"Four Facet20000000000000
    1/16"0.0625"1 1/2"0.36"SpiralExpanded Round1/8"Four Facet20000000000000
    5/64"0.0781"1 1/2"0.36"SpiralExpanded Round1/8"Four Facet20000000000000
    3/32"0.0938"1 1/2"0.36"SpiralExpanded Round1/8"Four Facet20000000000000
    7/64"0.1094"1 1/2"0.36"SpiralExpanded Round1/8"Four Facet20000000000000
    1/8"0.125"1 1/2"0.36"SpiralExpanded Round1/8"Four Facet20000000000000
     
    Metric
    0.40 mm0.0157"38 mm3.6 mmSpiralExpanded Round3.175 mmFour Facet20000000000000
    0.45 mm0.0177"38 mm3.6 mmSpiralExpanded Round3.175 mmFour Facet20000000000000
    0.55 mm0.0217"38 mm3.6 mmSpiralExpanded Round3.175 mmFour Facet20000000000000
    0.70 mm0.0276"38 mm7.6 mmSpiralExpanded Round3.175 mmFour Facet20000000000000
    0.85 mm0.0335"38 mm7.6 mmSpiralExpanded Round3.175 mmFour Facet20000000000000
    0.90 mm0.0354"38 mm7.6 mmSpiralExpanded Round3.175 mmFour Facet20000000000000
    1.15 mm0.0452"38 mm7.6 mmSpiralExpanded Round3.175 mmFour Facet20000000000000
    1.20 mm0.0472"38 mm7.6 mmSpiralExpanded Round3.175 mmFour Facet20000000000000
    1.25 mm0.0492"38 mm7.6 mmSpiralExpanded Round3.175 mmFour Facet20000000000000
    1.30 mm0.0511"38 mm7.6 mmSpiralExpanded Round3.175 mmFour Facet20000000000000
    1.35 mm0.0531"38 mm7.6 mmSpiralExpanded Round3.175 mmFour Facet20000000000000
    1.40 mm0.0551"38 mm7.6 mmSpiralExpanded Round3.175 mmFour Facet20000000000000
    1.45 mm0.0571"38 mm7.6 mmSpiralExpanded Round3.175 mmFour Facet20000000000000
    1.50 mm0.059"38 mm7.6 mmSpiralExpanded Round3.175 mmFour Facet20000000000000
    1.55 mm0.061"38 mm7.6 mmSpiralExpanded Round3.175 mmFour Facet20000000000000
    1.60 mm0.063"38 mm9.1 mmSpiralExpanded Round3.175 mmFour Facet20000000000000
    1.75 mm0.0689"38 mm9.1 mmSpiralExpanded Round3.175 mmFour Facet20000000000000
    1.80 mm0.0708"38 mm9.1 mmSpiralExpanded Round3.175 mmFour Facet20000000000000
    2.00 mm0.0787"38 mm9.1 mmSpiralExpanded Round3.175 mmFour Facet20000000000000
    2.10 mm0.0827"38 mm9.1 mmSpiralExpanded Round3.175 mmFour Facet20000000000000
    2.35 mm0.0925"38 mm9.1 mmSpiralExpanded Round3.175 mmFour Facet20000000000000
    2.90 mm0.1142"38 mm9.1 mmSpiralExpanded Round3.175 mmFour Facet20000000000000
     
    Wire Gauge
    78 Ga.0.016"1 1/2"0.14"SpiralExpanded Round1/8"Four Facet20000000000000
    77 Ga.0.018"1 1/2"0.14"SpiralExpanded Round1/8"Four Facet20000000000000
    76 Ga.0.02"1 1/2"0.14"SpiralExpanded Round1/8"Four Facet20000000000000
    74 Ga.0.0225"1 1/2"0.14"SpiralExpanded Round1/8"Four Facet20000000000000
    73 Ga.0.024"1 1/2"0.14"SpiralExpanded Round1/8"Four Facet20000000000000
    72 Ga.0.025"1 1/2"0.19"SpiralExpanded Round1/8"Four Facet20000000000000
    71 Ga.0.026"1 1/2"0.24"SpiralExpanded Round1/8"Four Facet20000000000000
    70 Ga.0.028"1 1/2"0.19"SpiralExpanded Round1/8"Four Facet20000000000000
    69 Ga.0.0292"1 1/2"0.19"SpiralExpanded Round1/8"Four Facet20000000000000
    68 Ga.0.031"1 1/2"0.19"SpiralExpanded Round1/8"Four Facet20000000000000
    67 Ga.0.032"1 1/2"0.19"SpiralExpanded Round1/8"Four Facet20000000000000
    65 Ga.0.035"1 1/2"0.3"SpiralExpanded Round1/8"Four Facet20000000000000
    64 Ga.0.036"1 1/2"0.3"SpiralExpanded Round1/8"Four Facet20000000000000
    63 Ga.0.037"1 1/2"0.3"SpiralExpanded Round1/8"Four Facet20000000000000
    62 Ga.0.038"1 1/2"0.3"SpiralExpanded Round1/8"Four Facet20000000000000
    61 Ga.0.039"1 1/2"0.3"SpiralExpanded Round1/8"Four Facet20000000000000
    60 Ga.0.04"1 1/2"0.3"SpiralExpanded Round1/8"Four Facet20000000000000
    59 Ga.0.041"1 1/2"0.3"SpiralExpanded Round1/8"Four Facet20000000000000
    58 Ga.0.042"1 1/2"0.3"SpiralExpanded Round1/8"Four Facet20000000000000
    57 Ga.0.043"1 1/2"0.3"SpiralExpanded Round1/8"Four Facet20000000000000
    56 Ga.0.0465"1 1/2"0.3"SpiralExpanded Round1/8"Four Facet20000000000000
    55 Ga.0.052"1 1/2"0.3"SpiralExpanded Round1/8"Four Facet20000000000000
    54 Ga.0.055"1 1/2"0.3"SpiralExpanded Round1/8"Four Facet20000000000000
    53 Ga.0.0595"1 1/2"0.3"SpiralExpanded Round1/8"Four Facet20000000000000
    52 Ga.0.0635"1 1/2"0.36"SpiralExpanded Round1/8"Four Facet20000000000000
    51 Ga.0.067"1 1/2"0.36"SpiralExpanded Round1/8"Four Facet20000000000000
    50 Ga.0.07"1 1/2"0.36"SpiralExpanded Round1/8"Four Facet20000000000000
    49 Ga.0.073"1 1/2"0.36"SpiralExpanded Round1/8"Four Facet20000000000000
    48 Ga.0.076"1 1/2"0.36"SpiralExpanded Round1/8"Four Facet20000000000000
    47 Ga.0.0785"1 1/2"0.36"SpiralExpanded Round1/8"Four Facet20000000000000
    46 Ga.0.081"1 1/2"0.36"SpiralExpanded Round1/8"Four Facet20000000000000
    45 Ga.0.082"1 1/2"0.36"SpiralExpanded Round1/8"Four Facet20000000000000
    44 Ga.0.086"1 1/2"0.36"SpiralExpanded Round1/8"Four Facet20000000000000
    43 Ga.0.089"1 1/2"0.36"SpiralExpanded Round1/8"Four Facet20000000000000
    42 Ga.0.0935"1 1/2"0.36"SpiralExpanded Round1/8"Four Facet20000000000000
    41 Ga.0.096"1 1/2"0.36"SpiralExpanded Round1/8"Four Facet20000000000000
    40 Ga.0.098"1 1/2"0.36"SpiralExpanded Round1/8"Four Facet20000000000000
    39 Ga.0.0995"1 1/2"0.36"SpiralExpanded Round1/8"Four Facet20000000000000
    38 Ga.0.1015"1 1/2"0.36"SpiralExpanded Round1/8"Four Facet20000000000000
    37 Ga.0.104"1 1/2"0.36"SpiralExpanded Round1/8"Four Facet20000000000000
    36 Ga.0.1065"1 1/2"0.36"SpiralExpanded Round1/8"Four Facet20000000000000
    35 Ga.0.11"1 1/2"0.36"SpiralExpanded Round1/8"Four Facet20000000000000
    33 Ga.0.113"1 1/2"0.36"SpiralExpanded Round1/8"Four Facet20000000000000
    32 Ga.0.116"1 1/2"0.36"SpiralExpanded Round1/8"Four Facet20000000000000
    31 Ga.0.12"1 1/2"0.36"SpiralExpanded Round1/8"Four Facet20000000000000
     
    Titanium Aluminum Nitride (TiAlN) Coated
     
    Inch
    1/64"0.0156"1 1/2"0.14"SpiralExpanded Round1/8"Standard2000000000000
    1/32"0.0313"1 1/2"0.3"SpiralExpanded Round1/8"Standard20000000000000
    3/64"0.0469"1 1/2"0.3"SpiralExpanded Round1/8"Standard20000000000000
    1/16"0.0625"1 1/2"0.36"SpiralExpanded Round1/8"Standard20000000000000
    5/64"0.0781"1 1/2"0.36"SpiralExpanded Round1/8"Standard20000000000000
    3/32"0.0938"1 1/2"0.36"SpiralExpanded Round1/8"Standard20000000000000
    7/64"0.1094"1 1/2"0.36"SpiralExpanded Round1/8"Standard20000000000000
    1/8"0.125"1 1/2"0.36"SpiralExpanded Round1/8"Standard20000000000000
     
    Wire Gauge
    80 Ga.0.0135"1 1/2"0.14"SpiralExpanded Round1/8"Four Facet2000000000000
    79 Ga.0.0145"1 1/2"0.14"SpiralExpanded Round1/8"Four Facet20000000000000
    78 Ga.0.016"1 1/2"0.14"SpiralExpanded Round1/8"Four Facet20000000000000
    77 Ga.0.018"1 1/2"0.19"SpiralExpanded Round1/8"Four Facet20000000000000
    76 Ga.0.02"1 1/2"0.19"SpiralExpanded Round1/8"Four Facet20000000000000
    75 Ga.0.021"1 1/2"0.19"SpiralExpanded Round1/8"Four Facet20000000000000
    74 Ga.0.0225"1 1/2"0.19"SpiralExpanded Round1/8"Four Facet20000000000000
    73 Ga.0.024"1 1/2"0.19"SpiralExpanded Round1/8"Four Facet20000000000000
    72 Ga.0.025"1 1/2"0.19"SpiralExpanded Round1/8"Four Facet20000000000000
    71 Ga.0.026"1 1/2"0.19"SpiralExpanded Round1/8"Four Facet20000000000000
    70 Ga.0.028"1 1/2"0.24"SpiralExpanded Round1/8"Four Facet2000000000000
    69 Ga.0.0292"1 1/2"0.24"SpiralExpanded Round1/8"Four Facet20000000000000
    68 Ga.0.031"1 1/2"0.3"SpiralExpanded Round1/8"Four Facet20000000000000
    67 Ga.0.032"1 1/2"0.3"SpiralExpanded Round1/8"Standard20000000000000
    66 Ga.0.033"1 1/2"0.3"SpiralExpanded Round1/8"Standard20000000000000
    65 Ga.0.035"1 1/2"0.3"SpiralExpanded Round1/8"Standard20000000000000
    64 Ga.0.036"1 1/2"0.3"SpiralExpanded Round1/8"Standard20000000000000
    63 Ga.0.037"1 1/2"0.3"SpiralExpanded Round1/8"Standard20000000000000
    62 Ga.0.038"1 1/2"0.3"SpiralExpanded Round1/8"Standard20000000000000
    61 Ga.0.039"1 1/2"0.3"SpiralExpanded Round1/8"Standard20000000000000
    60 Ga.0.04"1 1/2"0.3"SpiralExpanded Round1/8"Standard2000000000000
    59 Ga.0.041"1 1/2"0.3"SpiralExpanded Round1/8"Standard20000000000000
    58 Ga.0.042"1 1/2"0.3"SpiralExpanded Round1/8"Standard20000000000000
    57 Ga.0.043"1 1/2"0.3"SpiralExpanded Round1/8"Standard20000000000000
    56 Ga.0.0465"1 1/2"0.3"SpiralExpanded Round1/8"Standard20000000000000
    55 Ga.0.052"1 1/2"0.3"SpiralExpanded Round1/8"Standard20000000000000
    54 Ga.0.055"1 1/2"0.3"SpiralExpanded Round1/8"Standard20000000000000
    53 Ga.0.0595"1 1/2"0.3"SpiralExpanded Round1/8"Standard20000000000000
    52 Ga.0.0635"1 1/2"0.36"SpiralExpanded Round1/8"Standard20000000000000
    51 Ga.0.067"1 1/2"0.36"SpiralExpanded Round1/8"Standard20000000000000
    50 Ga.0.07"1 1/2"0.36"SpiralExpanded Round1/8"Standard2000000000000
    49 Ga.0.073"1 1/2"0.36"SpiralExpanded Round1/8"Standard20000000000000
    48 Ga.0.076"1 1/2"0.36"SpiralExpanded Round1/8"Standard20000000000000
    47 Ga.0.0785"1 1/2"0.36"SpiralExpanded Round1/8"Standard20000000000000
    46 Ga.0.081"1 1/2"0.36"SpiralExpanded Round1/8"Standard20000000000000
    45 Ga.0.082"1 1/2"0.36"SpiralExpanded Round1/8"Standard20000000000000
    44 Ga.0.086"1 1/2"0.36"SpiralExpanded Round1/8"Standard20000000000000
    43 Ga.0.089"1 1/2"0.36"SpiralExpanded Round1/8"Standard20000000000000
    42 Ga.0.0935"1 1/2"0.36"SpiralExpanded Round1/8"Standard20000000000000
    41 Ga.0.096"1 1/2"0.36"SpiralExpanded Round1/8"Standard20000000000000
    40 Ga.0.098"1 1/2"0.36"SpiralExpanded Round1/8"Standard2000000000000
    39 Ga.0.0995"1 1/2"0.36"SpiralExpanded Round1/8"Standard20000000000000
    38 Ga.0.1015"1 1/2"0.36"SpiralExpanded Round1/8"Standard20000000000000
    37 Ga.0.104"1 1/2"0.36"SpiralExpanded Round1/8"Standard20000000000000
    36 Ga.0.1065"1 1/2"0.36"SpiralExpanded Round1/8"Standard20000000000000
    35 Ga.0.11"1 1/2"0.36"SpiralExpanded Round1/8"Standard20000000000000
    34 Ga.0.111"1 1/2"0.36"SpiralExpanded Round1/8"Standard20000000000000
    33 Ga.0.113"1 1/2"0.36"SpiralExpanded Round1/8"Standard20000000000000
    32 Ga.0.116"1 1/2"0.36"SpiralExpanded Round1/8"Standard20000000000000
    31 Ga.0.12"1 1/2"0.36"SpiralExpanded Round1/8"Standard20000000000000
     

    Coolant-Fed Drill Bits

    Channel coolant through the holes to reduce heat and evacuate chips more efficiently than other bits. These are designed for CNC machines that supply coolant through the spindle rather than an external source, such as a hose and nozzle. Coolant flows directly from the bit's tip onto the drilling surface. This speeds up cuts and leads to excellent performance in deep holes and tough materials such as stainless steel and titanium.
    Carbide Jobbers' Length
    Image of Product. Front orientation. Drill Bits. Coolant-Fed Drill Bits, Jobbers' Length, Spiral Flute, Round Shank.

    Spiral Flute

    Round Shank

    The hardest and most wear-resistant drill bits you can buy in a length that's rigid enough for most applications. These bits stay sharp at high temperatures and faster speeds for the best performance on hard and difficult-to-machine materials. They last 10 to 20 times longer than their closest alternative, cobalt steel. Carbide can be brittle, however, so these bits require a rigid machine tool holder to prevent breakage and should not be used in hand drilling applications.
    Titanium Aluminum Nitride (TiAlN) Coated—No drill bits last longer. These are the best for high-speed, high-temperature drilling of very hard and abrasive materials, including titanium and fiberglass.
    Round Shank—The most common shank type fits in a drill press chuck.
    Four-Facet Point—The most accurate point style, it centers the bit without a pilot hole and keeps the bit stable while drilling hard metals.
    Shank
    Drill Bit
    Size
    Decimal Size
    Equiv.
    Overall
    Lg.
    Max. Drilling
    Dp.
    Flute
    Type
    Type
    Size
    Drill Bit Point
    Type
    No. of
    Flutes
    Each
    Titanium Aluminum Nitride (TiAlN) Coated
     
    Inch
    1/8"0.125"2"0.75"SpiralRound1/8"Four Facet200000000000000
    9/64"0.1406"2 1/4"0.88"SpiralRound9/64"Four Facet2000000000000
    5/32"0.1563"2 1/2"0.94"SpiralRound5/32"Four Facet20000000000000
    11/64"0.1719"2 1/2"1"SpiralRound11/64"Four Facet20000000000000
    3/16"0.1875"2 3/4"1.25"SpiralRound3/16"Four Facet2000000000000
    13/64"0.2031"3"1.31"SpiralRound13/64"Four Facet20000000000000
    7/32"0.2188"3"1.38"SpiralRound7/32"Four Facet20000000000000
    1/4"0.25"3 1/4"1.63"SpiralRound1/4"Four Facet20000000000000
    17/64"0.2656"3 1/2"1.69"SpiralRound17/64"Four Facet20000000000000
    9/32"0.2813"3 1/2"1.75"SpiralRound9/32"Four Facet20000000000000
    5/16"0.3125"3 3/4"1.88"SpiralRound5/16"Four Facet200000000000000
    3/8"0.375"4 1/4"2.38"SpiralRound3/8"Four Facet200000000000000
    7/16"0.4375"4 3/4"2.81"SpiralRound7/16"Four Facet200000000000000
    1/2"0.5"5 3/8"3.06"SpiralRound1/2"Four Facet200000000000000
     
    Metric
    3.0 mm0.1181"67 mm27.9 mmSpiralRound6 mmFour Facet20000000000000
    4.0 mm0.1575"73 mm36.1 mmSpiralRound6 mmFour Facet20000000000000
    5.0 mm0.1969"83 mm43.9 mmSpiralRound6 mmFour Facet2000000000000
    6.0 mm0.2362"83 mm43.9 mmSpiralRound6 mmFour Facet20000000000000
    7.0 mm0.2756"92 mm53.1 mmSpiralRound8 mmFour Facet200000000000000
    7.5 mm0.2953"92 mm53.1 mmSpiralRound8 mmFour Facet20000000000000
    8.0 mm0.315"92 mm53.1 mmSpiralRound8 mmFour Facet200000000000000
    8.5 mm0.3346"102 mm61 mmSpiralRound10 mmFour Facet200000000000000
    9.0 mm0.3543"102 mm61 mmSpiralRound10 mmFour Facet200000000000000
    9.5 mm0.374"102 mm61 mmSpiralRound10 mmFour Facet200000000000000
    10.0 mm0.3937"102 mm61 mmSpiralRound10 mmFour Facet200000000000000
     
    Carbide Maintenance Length
    Image of Product. Spiral Flute. Side1 orientation. Drill Bits. Coolant-Fed Drill Bits, Maintenance Length, Spiral Flute, Round Shank.

    Spiral Flute

    Shorter and more rigid than jobbers' length, these carbide bits are the hardest and most wear resistant you can buy. They stay sharp at high temperatures and faster speeds for the best performance on hard and difficult-to-machine materials. Also known as mechanics' bits.
    Titanium Aluminum Nitride (TiAlN) Coated—No drill bits last longer. These are the best for high-speed, high-temperature drilling of very hard and abrasive materials, including titanium and fiberglass.
    Round Shank—The most common shank type fits in a drill press chuck.
    Four-Facet Point—The most accurate point style, it centers the bit without a pilot hole and keeps the bit stable while drilling hard metals.
    Shank
    Drill Bit
    Size
    Decimal Size
    Equiv.
    Overall
    Lg.
    Max. Drilling
    Dp.
    Flute
    Type
    Type
    Size
    Drill Bit Point
    Type
    No. of
    Flutes
    Each
    Titanium Aluminum Nitride (TiAlN) Coated
     
    Inch
    1/8"0.125"1 15/16"0.69"SpiralRound1/8"Four Facet200000000000000
    9/64"0.1406"2 1/16"0.75"SpiralRound9/64"Four Facet20000000000000
    5/32"0.1563"2 3/16"0.81"SpiralRound5/32"Four Facet20000000000000
    11/64"0.1719"2 9/32"0.94"SpiralRound11/64"Four Facet2000000000000
    3/16"0.1875"2 13/32"1"SpiralRound3/16"Four Facet20000000000000
    13/64"0.2031"2 13/32"1"SpiralRound13/64"Four Facet20000000000000
    7/32"0.2188"2 5/8"1.09"SpiralRound7/32"Four Facet20000000000000
    1/4"0.25"2 3/4"1.22"SpiralRound1/4"Four Facet20000000000000
    17/64"0.2656"2 15/16"1.34"SpiralRound17/64"Four Facet20000000000000
    9/32"0.2813"2 15/16"1.34"SpiralRound9/32"Four Facet20000000000000
    5/16"0.3125"3 3/32"1.47"SpiralRound5/16"Four Facet20000000000000
    3/8"0.375"3 1/2"1.69"SpiralRound3/8"Four Facet200000000000000
    7/16"0.4375"3 3/4"1.81"SpiralRound7/16"Four Facet20000000000000
    1/2"0.5"4"1.94"SpiralRound1/2"Four Facet200000000000000
     
    Metric
    3.0 mm0.1181"64 mm20.1 mmSpiralRound6 mmFour Facet20000000000000
    4.0 mm0.1575"67 mm23.9 mmSpiralRound6 mmFour Facet20000000000000
    5.0 mm0.1969"67 mm27.9 mmSpiralRound6 mmFour Facet20000000000000
    6.0 mm0.2362"67 mm27.9 mmSpiralRound6 mmFour Facet20000000000000
    7.0 mm0.2756"79 mm34 mmSpiralRound8 mmFour Facet20000000000000
    7.5 mm0.2953"79 mm40.9 mmSpiralRound8 mmFour Facet20000000000000
    8.0 mm0.315"79 mm40.9 mmSpiralRound8 mmFour Facet20000000000000
    8.5 mm0.3346"89 mm47 mmSpiralRound10 mmFour Facet200000000000000
    9.0 mm0.3543"89 mm47 mmSpiralRound10 mmFour Facet200000000000000
    9.5 mm0.374"89 mm88.9 mmSpiralRound10 mmFour Facet200000000000000
    10.0 mm0.3937"89 mm47 mmSpiralRound10 mmFour Facet20000000000000
     
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