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    8,118 Products
    About Drill Bits
    industrial info icon

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

    Reduced-Shank Cobalt Steel Drill Bits

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

    Jobbers' Length

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

    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.
    Titanium Nitride (TiN) Coated—Drill at higher speeds and last longer than uncoated and oxide-coated bits, especially on tough materials like hardened steel and nickel.
    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
    Mfr.
    Each
    Jobbers' Length
     
    Titanium Nitride (TiN) Coated
    17/32"
    		0.5313"
    		6"3.13"Reduced Round
    		1/2"Split
    		Chicago-Latrobe3322A12000000
    9/16"
    		0.5625"
    		6"3.13"Reduced Round
    		1/2"Split
    		Chicago-Latrobe3322A1400000
    19/32"
    		0.5938"
    		6"3.13"Reduced Round
    		1/2"Split
    		Chicago-Latrobe3322A1600000
    5/8"
    		0.625"
    		6"3.13"Reduced Round
    		1/2"Split
    		Chicago-Latrobe3322A1800000
    21/32"
    		0.6563"
    		6"3.13"Reduced Round
    		1/2"Split
    		Chicago-Latrobe3322A2100000
    11/16"
    		0.6875"
    		6"3.13"Reduced Round
    		1/2"Split
    		Chicago-Latrobe3322A2300000
    23/32"
    		0.7188"
    		6"3.13"Reduced Round
    		1/2"Split
    		Chicago-Latrobe3322A25000000
    3/4"
    		0.75"
    		6"3.13"Reduced Round
    		1/2"Split
    		Chicago-Latrobe3322A27000000
    25/32"
    		0.7813"
    		6"3.13"Reduced Round
    		1/2"Split
    		Chicago-Latrobe3322A29000000
    13/16"
    		0.8125"
    		6"3.13"Reduced Round
    		1/2"Split
    		Chicago-Latrobe3322A32000000
    27/32"
    		0.8438"
    		6"3.13"Reduced Round
    		1/2"Split
    		Chicago-Latrobe3322A34000000
    7/8"
    		0.875"
    		6"3.13"Reduced Round
    		1/2"Split
    		Chicago-Latrobe3322A36000000
    29/32"
    		0.9063"
    		6"3.13"Reduced Round
    		1/2"Split
    		Chicago-Latrobe3322A38000000
    15/16"
    		0.9375"
    		6"3.13"Reduced Round
    		1/2"Split
    		Chicago-Latrobe3322A41000000
    31/32"
    		0.9688"
    		6"3.13"Reduced Round
    		1/2"Split
    		Chicago-Latrobe3322A43000000
    1"
    		1"
    		6"3.13"Reduced Round
    		1/2"Split
    		Chicago-Latrobe3322A45000000
     
    Uncoated
    33/64"
    		0.5156"
    		6"2.1"Reduced Round
    		1/2"Split
    		Chicago-Latrobe8939A4100000
    17/32"
    		0.5313"
    		6"2.1"Reduced Round
    		1/2"Split
    		Chicago-Latrobe8939A4200000
    35/64"
    		0.5469"
    		6"2.1"Reduced Round
    		1/2"Split
    		Chicago-Latrobe8939A4300000
    9/16"
    		0.5625"
    		6"2.1"Reduced Round
    		1/2"Split
    		Chicago-Latrobe8939A1100000
    37/64"
    		0.5781"
    		6"2.1"Reduced Round
    		1/2"Split
    		Chicago-Latrobe8939A4400000
    19/32"
    		0.5938"
    		6"2.1"Reduced Round
    		1/2"Split
    		Chicago-Latrobe8939A1900000
    39/64"
    		0.6094"
    		6"2.1"Reduced Round
    		1/2"Split
    		Chicago-Latrobe8939A4500000
    5/8"
    		0.625"
    		6"2.1"Reduced Round
    		1/2"Split
    		Chicago-Latrobe8939A1200000
    41/64"
    		0.6406"
    		6"2.1"Reduced Round
    		1/2"Split
    		Chicago-Latrobe8939A4600000
    21/32"
    		0.6563"
    		6"2.1"Reduced Round
    		1/2"Split
    		Chicago-Latrobe8939A2100000
    43/64"
    		0.6719"
    		6"2.1"Reduced Round
    		1/2"Split
    		Chicago-Latrobe8939A4700000
    11/16"
    		0.6875"
    		6"2.1"Reduced Round
    		1/2"Split
    		Chicago-Latrobe8939A1300000
    45/64"
    		0.7031"
    		6"2.1"Reduced Round
    		1/2"Split
    		Chicago-Latrobe8939A4800000
    23/32"
    		0.7188"
    		6"2.1"Reduced Round
    		1/2"Split
    		Chicago-Latrobe8939A2200000
    47/64"
    		0.7344"
    		6"2.1"Reduced Round
    		1/2"Split
    		Chicago-Latrobe8939A4900000
    3/4"
    		0.75"
    		6"2.1"Reduced Round
    		1/2"Split
    		Chicago-Latrobe8939A1400000
    49/64"
    		0.7656"
    		6"2.1"Reduced Round
    		1/2"Split
    		Chicago-Latrobe8939A5100000
    25/32"
    		0.7813"
    		6"2.1"Reduced Round
    		1/2"Split
    		Chicago-Latrobe8939A2300000
    51/64"
    		0.7969"
    		6"2.1"Reduced Round
    		1/2"Split
    		Chicago-Latrobe8939A5200000
    13/16"
    		0.8125"
    		6"2.1"Reduced Round
    		1/2"Split
    		Chicago-Latrobe8939A1500000
    53/64"
    		0.8281"
    		6"2.1"Reduced Round
    		1/2"Split
    		Chicago-Latrobe8939A5300000
    27/32"
    		0.8438"
    		6"2.1"Reduced Round
    		1/2"Split
    		Chicago-Latrobe8939A2400000
    Cobalt Steel Reduced-Round Shank Drill Bit, 27/32" Size
    EachIn stock
    Compatible Products for This Drill Bit
    55/64"
    		0.8594"
    		6"2.1"Reduced Round
    		1/2"Split
    		Chicago-Latrobe8939A5400000
    7/8"
    		0.875"
    		6"2.1"Reduced Round
    		1/2"Split
    		Chicago-Latrobe8939A1600000
    57/64"
    		0.8906"
    		6"2.1"Reduced Round
    		1/2"Split
    		Chicago-Latrobe8939A55000000
    29/32"
    		0.9063"
    		6"2.1"Reduced Round
    		1/2"Split
    		Chicago-Latrobe8939A25000000
    59/64"
    		0.9219"
    		6"2.1"Reduced Round
    		1/2"Split
    		Chicago-Latrobe8939A56000000
    15/16"
    		0.9375"
    		6"2.1"Reduced Round
    		1/2"Split
    		Chicago-Latrobe8939A17000000
    61/64"
    		0.9531"
    		6"2.1"Reduced Round
    		1/2"Split
    		Chicago-Latrobe8939A57000000
    31/32"
    		0.9688"
    		6"2.1"Reduced Round
    		1/2"Split
    		Chicago-Latrobe8939A26000000
    63/64"
    		0.9844"
    		6"2.1"Reduced Round
    		1/2"Split
    		Chicago-Latrobe8939A58000000
    1"
    		1"
    		6"2.1"Reduced Round
    		1/2"Split
    		Chicago-Latrobe8939A18000000
    1"
    		1"
    		6"3"Reduced Round
    		3/4"Split
    		Republic Drill8814A41000000
    1 1/32"
    		1.0313"
    		6"3"Reduced Round
    		3/4"Split
    		Republic Drill8814A31000000
    1 1/16"
    		1.0625"
    		6"3"Reduced Round
    		3/4"Split
    		Republic Drill8814A42000000
    1 1/8"
    		1.125"
    		6"3"Reduced Round
    		3/4"Split
    		Republic Drill8814A43000000
    1 5/32"
    		1.1563"
    		6"3"Reduced Round
    		3/4"Split
    		Republic Drill8814A33000000
    1 3/16"
    		1.1875"
    		6"3"Reduced Round
    		3/4"Split
    		Republic Drill8814A44000000
    1 1/4"
    		1.25"
    		6"3"Reduced Round
    		3/4"Split
    		Republic Drill8814A45000000
    1 5/16"
    		1.3125"
    		6"3"Reduced Round
    		3/4"Split
    		Republic Drill8814A46000000
    1 3/8"
    		1.375"
    		6"3"Reduced Round
    		3/4"Split
    		Republic Drill8814A47000000
    1 7/16"
    		1.4375"
    		6"3"Reduced Round
    		3/4"Split
    		Republic Drill8814A48000000
    1 1/2"
    		1.5"
    		6"3"Reduced Round
    		3/4"Split
    		Republic Drill8814A49000000
    1 9/16"
    		1.5625"
    		6"3"Reduced Round
    		3/4"Split
    		Republic Drill8814A54000000
    1 3/4"
    		1.75"
    		6"3"Reduced Round
    		3/4"Split
    		Republic Drill8814A52000000
    2"
    		2"
    		6"3"Reduced Round
    		3/4"Split
    		Republic Drill8814A53000000
    13.0 mm
    		0.5118"
    		152 mm58 mmReduced Round
    		1/2"Split
    		Chicago-Latrobe8939A60100000
    13.5 mm
    		0.5315"
    		152 mm58 mmReduced Round
    		1/2"Split
    		Chicago-Latrobe8939A60200000
    14.0 mm
    		0.5512"
    		152 mm58 mmReduced Round
    		1/2"Split
    		Chicago-Latrobe8939A60300000
    14.5 mm
    		0.5709"
    		152 mm58 mmReduced Round
    		1/2"Split
    		Chicago-Latrobe8939A60400000
    15.0 mm
    		0.5906"
    		152 mm58 mmReduced Round
    		1/2"Split
    		Chicago-Latrobe8939A60500000
    15.5 mm
    		0.6102"
    		152 mm58 mmReduced Round
    		1/2"Split
    		Chicago-Latrobe8939A60600000
    16.0 mm
    		0.6299"
    		152 mm58 mmReduced Round
    		1/2"Split
    		Chicago-Latrobe8939A60700000
    16.5 mm
    		0.6496"
    		152 mm58 mmReduced Round
    		1/2"Split
    		Chicago-Latrobe8939A60800000
    17.0 mm
    		0.6693"
    		152 mm58 mmReduced Round
    		1/2"Split
    		Chicago-Latrobe8939A60900000
    17.5 mm
    		0.689"
    		152 mm58 mmReduced Round
    		1/2"Split
    		Chicago-Latrobe8939A61100000
    18.0 mm
    		0.7087"
    		152 mm58 mmReduced Round
    		1/2"Split
    		Chicago-Latrobe8939A61200000
    18.5 mm
    		0.7283"
    		152 mm58 mmReduced Round
    		1/2"Split
    		Chicago-Latrobe8939A61300000
    19.0 mm
    		0.748"
    		152 mm58 mmReduced Round
    		1/2"Split
    		Chicago-Latrobe8939A61400000
    19.5 mm
    		0.7677"
    		152 mm58 mmReduced Round
    		1/2"Split
    		Chicago-Latrobe8939A61500000
    20.0 mm
    		0.7874"
    		152 mm58 mmReduced Round
    		1/2"Split
    		Chicago-Latrobe8939A61600000
    21.0 mm
    		0.8268"
    		152 mm58 mmReduced Round
    		1/2"Split
    		Chicago-Latrobe8939A617000000
    21.5 mm
    		0.8465"
    		152 mm58 mmReduced Round
    		1/2"Split
    		Chicago-Latrobe8939A618000000
    23.0 mm
    		0.9055"
    		152 mm58 mmReduced Round
    		1/2"Split
    		Chicago-Latrobe8939A619000000
    24.0 mm
    		0.9449"
    		152 mm58 mmReduced Round
    		1/2"Split
    		Chicago-Latrobe8939A621000000
    25.0 mm
    		0.9843"
    		152 mm58 mmReduced Round
    		1/2"Split
    		Chicago-Latrobe8939A622000000
     
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