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    24 Products
    About Drill Bits
    industrial info icon

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

    Cobalt Steel Drill Bit Sets

    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' LengthAbout Jobbers' Length
    Image of Product. Front orientation. Drill Bits. Cobalt Steel Drill Bit Sets, Jobbers' Length.
    Image of Specification. Split. Front orientation. Contains Border. Split Point. For Metal.

    Split

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

    Standard

    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.
    No. of
    Pieces
    Drill Bit Sizes Included
    System of Measurement
    Drill Bit Point
    Style
    Specs. Met
    Container
    Type
    Each
    Titanium Nitride (TiN) Coated
    131/16"-1/4" (increments of 1/64")InchSplit Point
    		NAS907 Type JMetal Case28115A71000000
    151/16"-1/2" (increments of 1/32")InchSplit Point
    		NAS907 Type JMetal Case28115A74000000
    211/16"-3/8" (increments of 1/64")InchSplit Point
    		NAS907 Type JMetal Case28115A72000000
    291/16"-1/2" (increments of 1/64")InchSplit Point
    		NAS907 Type JMetal Case28115A77000000
     
    Uncoated
    131.0 mm and 1.5 mm,
    2.0-7.0 mm (increments of 0.5 mm)    		MetricSplit Point
    		NAS907 Type JMetal Case27945A2400000
    131/16"-1/4" (increments of 1/64")InchSplit Point
    		NAS907 Type JMetal Case8856A5100000
    151/16"-1/2" (increments of 1/32")InchSplit Point
    		NAS907 Type JMetal Case8856A53000000
    191.0 mm and 1.5 mm,
    2.0-10.0 mm (increments of 0.5 mm)    		MetricSplit Point
    		NAS907 Type JMetal Case27945A25000000
    2080-61 gaWire GaugeStandard Point
    		NAS907 Type JMetal Case8856A5700000
    211/16"-3/8" (increments of 1/64")InchSplit Point
    		NAS907 Type JMetal Case8856A5600000
    251.0 mm and 1.5 mm,
    2.0-13.0 mm (increments of 0.5 mm)    		MetricSplit Point
    		NAS907 Type JMetal Case27945A27000000
    26A-ZLetter SizeSplit Point
    		NAS907 Type JMetal Case8856A55000000
    291/16"-1/2" (increments of 1/64")InchSplit Point
    		NAS907 Type JMetal Case8856A52000000
    416.0-10.0 mm (increments of 0.1 mm)MetricSplit Point
    		NAS907 Type JMetal Case27945A28000000
    6060-53 ga,
    52-1 ga    		Wire GaugeStandard
    Split    		NAS907 Type JMetal Case8856A54000000
    1141/16"-1/2" (increments of 1/64"),
    1.0-13.0 mm (increments of 0.5 mm),
    60-1 ga    		Inch, Metric, Wire GaugeSplit Point
    		NAS907 Type JMetal Case3048A4700000000
    1151/16"-1/2" (increments of 1/64"),
    60-53 ga,
    52-1 ga,
    A-Z,    		Inch, Wire Gauge, Letter SizeSplit
    Standard    		NAS907 Type JMetal Case3048A46000000
     
    Short LengthAbout Short Length
    Image of Product. Front orientation. Drill Bits. Cobalt Steel Drill Bit Sets, Short Length.
    Image of Specification. Split. Front orientation. Contains Border. Split Point. For Metal.

    Split

    The most rigid bits for drilling the straightest holes.
    Uncoated—Polished to eject chips, these are also known as bright finish bits.
    No. of
    Pieces
    Drill Bit Sizes Included
    System of
    Measurement
    Drill Bit Point
    Style
    Container
    Type
    Each
    Uncoated
    151/16"-1/2" (increments of 1/32")InchSplit Point
    		Metal Case3148A620000000
    26A-ZLetter SizeSplit Point
    		Metal Case3148A76000000
    291/16"-1/2" (increments of 1/64")InchSplit Point
    		Metal Case3148A68000000
    6060-53 ga,
    52-1 ga    		Wire GaugeStandard
    Split    		Metal Case3148A72000000
     

    Short-Flute Cobalt Steel Drill Bit Sets

    These bits combine the toughness and wear resistance of cobalt with short flutes for rigidity. The shallow drilling depth makes them less likely to wobble than other bits of the same length, so they stay centered and drill straighter. Cobalt lasts at least twice as long as high-speed steel. It can also run up to 25% faster at higher temperatures without damaging the bit on hard materials such as nickel.
    Jobbers' LengthAbout Jobbers' Length
    Image of Product. Front orientation. Drill Bits. Short-Flute Cobalt Steel Drill Bit Sets, Jobbers' Length.
    Image of Specification. Split. Front orientation. Contains Border. Split Point. For Metal.

    Split

    These bits have the balance of rigidity and length needed for most applications.
    Black Oxide—The dark finish increases wear resistance and reduces friction to improve chip flow, so these bits can last 50% longer than uncoated bits.
    No. of
    Pieces
    Drill Bit Sizes Included
    System of
    Measurement
    Drill Bit Point
    Style
    Specs. Met
    Container
    Type
    Each
    Black Oxide
    291/16"-1/2" (increments of 1/64")InchSplit Point
    		NAS907 Type DMetal Case87875A240000000
     

    Cobalt Steel Reduced-Round Shank Drill Bit Sets

    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' LengthAbout Jobbers' Length
    Image of Product. Front orientation. Drill Bits. Cobalt Steel Reduced-Round Shank Drill Bit Sets, Jobbers' Length.
    Image of Specification. Split. Front orientation. Contains Border. Split Point. For Metal.

    Split

    These bits have the balance of rigidity and length needed for most applications.
    Uncoated—Polished to eject chips, these are also known as bright finish bits.
    Shank
    Size
    No. of
    Pieces
    Drill Bit Sizes Included
    System of
    Measurement
    Drill Bit Point
    Style
    Container
    Type
    Each
    Uncoated
    1/2"89/16"-1" (increments of 1/16")InchSplit Point
    		Metal Case8939A310000000
     

    Center Drill Sets

    Image of Product. Front orientation. Center Drills. Center Drill Sets.
    A variety of sizes to create precisely centered holes that mate with lathe centers or to drill and countersink in a single step to install fasteners.
    Cobalt Steel—Tough and wear resistant, these center drills last at least twice as long as high-speed steel. They can also run up to 25% faster at higher temperatures without chipping on hard materials, such as nickel.
    60° Countersink Angle—The most common center drill angle. The short and sturdy tip starts holes that perfectly match lathe centers.
    Uncoated—Suitable for most tasks, but won't last as long as coated center drills.
    60°
    Countersink Angle
    No. of
    Pieces
    Trade Size
    Finish
    Container
    Type
    Each
    Cobalt Steel
    51, 2, 3, 4, 5UncoatedPlastic Case2917A5000000
     
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