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    10 Products
    About Drill Bits
    industrial info icon

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

    High-Speed Steel Drill Bits

    Image of Product. Front orientation. Drill Bits. High-Speed Steel Drill Bits, Jobbers' Length, Round Shank.
    Image of Product. Front orientation. Drill Bits. High-Speed Steel Drill Bits, Extended Length, Round Shank.
    Image of Specification. Standard. Front orientation. Contains Border. Standard Point. For Metal.

    Jobbers' Length

    Round Shank

    Extended Length

    Round Shank

    Standard

    Our basic drill bits are also the most versatile. Cut holes in a variety of metals, from the softest aluminum to the hardest steel.
    Jobbers' Length—These bits have the balance of rigidity and length needed for most applications.
    Extended Length—Drill through panels and thick workpieces with our longest bits. Their length is good for creating deep holes but makes them less rigid than other bits. As a result, they are more prone to wobbling or breaking, especially when drilling hard materials.
    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.
    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—The most economical option, uncoated bits perform best when used on low-carbon steel and aluminum. Polished to reduce friction, they're 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
     
    Black Oxide
    75 Ga.
    		0.021"
    		1"0.21"Round
    		0.021"Standard
    		Chicago-Latrobe2901A25300000
     
    Titanium Nitride (TiN) Coated
    75 Ga.
    		0.021"
    		1"0.21"Round
    		0.021"Standard
    		Chicago-Latrobe29045A8350000
     
    Uncoated
    75 Ga.
    		0.021"
    		1"0.21"Round
    		0.021"Standard
    		Viking Norseman Drill30585A930000
     
    Extended Length
     
    Black Oxide
    75 Ga.
    		0.021"
    		1 1/2"0.28"Round
    		0.021"Standard
    		Chicago-Latrobe3096A1930000
     

    Cobalt Steel Drill Bits

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

    Jobbers' Length

    Round Shank

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

    Standard

    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
    Each
    Drill Bit
    Size
    Decimal Size
    Equiv.
    Overall
    Lg.
    Max. Drilling
    Dp.
    Type
    Size
    Drill Bit
    Point Type
    Mfr.
    1-11
    12-Up
    Jobbers' Length
     
    Titanium Nitride (TiN) Coated
    75 Ga.
    		0.021"
    		1"0.25"Round
    		0.021"Standard
    		Dormer Pramet27995A8230000000000
     
    Uncoated
    75 Ga.
    		0.021"
    		1"0.21"Round
    		0.021"Standard
    		Chicago-Latrobe3033A29300000000
     

    Carbide Drill Bits

    Image of Product. Front orientation. Drill Bits. Carbide Drill Bits, Jobbers' Length, Round Shank.

    Jobbers' Length

    Round Shank

    The hardest and most wear-resistant drill bits you can buy. Carbide 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.
    Jobbers' Length—These bits have the balance of rigidity and length needed for most applications.
    Uncoated—Excellent for a range of materials but won't last as long as coated bits.
    Shank
    Drill Bit
    Size
    Decimal Size
    Equiv.
    Overall
    Lg.
    Max. Drilling
    Dp.
    Type
    Size
    Drill Bit Point
    Type
    Mfr.
    Each
    Jobbers' Length
     
    Uncoated
    75 Ga.
    		0.021"
    		1 1/4"0.2"Round
    		0.021"Four Facet
    		Ultra Tool2860A93000000
     

    Chip-Clearing High-Speed Steel Drill Bits

    Image of Product. Front orientation. Drill Bits. Chip-Clearing High-Speed Steel Drill Bits, Jobbers' Length, High Helix Flute, Round Shank.

    Jobbers' Length

    High Helix Flute

    Round Shank

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

    Standard

    With flutes that lift chips out of the hole, you don't have to stop drilling to clear these bits manually. They improve coolant flow to dissipate heat and prevent clogs that can damage the bit and ruin the hole. High-speed steel is good for general purpose drilling in most metals.
    High Helix Flute—Less aggressive than parabolic flutes for cleaner cuts in soft metals.
    Jobbers' Length—These bits have the balance of rigidity and length needed for most applications.
    Uncoated—The most economical option, uncoated bits perform best when used on low-carbon steel and aluminum. Polished to reduce friction, they're also known as bright finish bits.
    Shank
    Drill Bit
    Size
    Decimal Size
    Equiv.
    Overall
    Lg.
    Max. Drilling
    Dp.
    Flute
    Type
    Type
    Size
    Drill Bit
    Point Type
    Mfr.
    Each
    Jobbers' Length
     
    Uncoated
    75 Ga.
    		0.021"
    		1"0.21"High HelixRound
    		0.021"Standard
    		Chicago-Latrobe2912A25400000
     

    Extensions for Round-Shank Drill Bits

    Image of Product. Front orientation. Drill Bit Extensions. Extensions for Round-Shank Drill Bits, One-Piece Extensions.

    One-Piece Extensions

    Attach to the shank of a drill bit to extend its reach.
    One-Piece Extensions—To attach one-piece extensions, insert a drill bit into the extension and tighten the knurled collar.
    For Drill Bit
    Size
    Size Decimal
    Equiv.
    Shank
    Size
    Shank
    Size
    Overall
    Lg.
    OD
    Material
    Each
    For Wire Gauge Drill Bits
     
    One-Piece Extensions
    75 Ga.0.0210"0.021"1/8"4"1/8"Steel
    		2864A117000000
    75 Ga.0.0210"0.021"3/16"4"3/16"Steel
    		2864A21700000
     
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