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    28 Products
    About Drill Bits
    industrial info icon

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

    Cobalt Steel Drill Bits

    Image of Product. Front orientation. Drill Bits. Cobalt Steel Drill Bits, Jobbers' Length, Morse Taper Shank.

    Jobbers' Length

    Morse Taper Shank

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

    Split

    Tough and wear resistant, 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.
    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
    Each
    Jobbers' Length
     
    Titanium Nitride (TiN) Coated
    5/8"
    0.625"
    10"4.88"Morse Taper
    Morse 2Split
    3068A3110000000
    3/4"
    0.75"
    10 1/2"5.88"Morse Taper
    Morse 3Split
    3068A312000000
    7/8"
    0.875"
    10 3/4"6.13"Morse Taper
    Morse 3Split
    3068A313000000
     
    Uncoated
    1/4"
    0.25"
    6 1/8"2.88"Morse Taper
    Morse 1Split
    3068A1100000
    17/64"
    0.2656"
    6 1/4"3"Morse Taper
    Morse 1Split
    3068A21100000
    9/32"
    0.2813"
    6 1/4"3"Morse Taper
    Morse 1Split
    3068A1200000
    5/16"
    0.3125"
    6 3/8"3.13"Morse Taper
    Morse 1Split
    3068A1300000
    21/64"
    0.3281"
    6 1/2"3.25"Morse Taper
    Morse 1Split
    3068A21200000
    11/32"
    0.3438"
    6 1/2"3.25"Morse Taper
    Morse 1Split
    3068A1400000
    3/8"
    0.375"
    7 3/8"3.5"Morse Taper
    Morse 2Split
    3068A1500000
    25/64"
    0.3906"
    7 1/2"3.63"Morse Taper
    Morse 2Split
    3068A21300000
    13/32"
    0.4063"
    7 1/2"3.63"Morse Taper
    Morse 2Split
    3068A1600000
    27/64"
    0.4219"
    7 3/4"3.88"Morse Taper
    Morse 2Split
    3068A5600000
    7/16"
    0.4375"
    7 3/4"3.88"Morse Taper
    Morse 2Split
    3068A1700000
    1/2"
    0.5"
    8 1/4"4.38"Morse Taper
    Morse 2Split
    3068A1900000
    17/32"
    0.5313"
    8 1/2"4.63"Morse Taper
    Morse 2Split
    3068A2100000
    9/16"
    0.5625"
    8 3/4"4.88"Morse Taper
    Morse 2Split
    3068A2200000
    5/8"
    0.625"
    8 3/4"4.88"Morse Taper
    Morse 2Split
    3068A24000000
    41/64"
    0.6406"
    9"3.84"Morse Taper
    Morse 2Split
    3068A64000000
    21/32"
    0.6563"
    9 3/4"5.13"Morse Taper
    Morse 3Split
    3068A2500000
    11/16"
    0.6875"
    10"5.38"Morse Taper
    Morse 3Split
    3068A26000000
    3/4"
    0.75"
    10 1/2"5.88"Morse Taper
    Morse 3Split
    3068A28000000
    13/16"
    0.8125"
    10 3/4"6.13"Morse Taper
    Morse 3Split
    3068A31000000
    7/8"
    0.875"
    10 3/4"6.13"Morse Taper
    Morse 3Split
    3068A32000000
    15/16"
    0.9375"
    10 3/4"6.13"Morse Taper
    Morse 3Split
    3068A33000000
    1"
    1"
    11"6.38"Morse Taper
    Morse 3Split
    3068A34000000
    1 1/16"
    1.0625"
    12 1/4"6.63"Morse Taper
    Morse 4Split
    3068A35000000
    1 1/4"
    1.25"
    13 1/2"8.63"Morse Taper
    Morse 4Split
    3068A38000000
     
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