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    6 Products
    About Drill Bits
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    Compare material, finish, length class, and decimal size equivalents.

    Material

    Performance

    High-Speed Steel Drill Bit Sets

    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' LengthAbout Jobbers' Length
    Image of Product. Front orientation. Drill Bits. High-Speed 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.
    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.
    Gold Oxide—Like black oxide, this finish adds wear resistance and reduces friction for improved chip flow. Because it’s less prone to flaking off, it offers better rust protection when bits aren't in use.
    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.
    No. of
    Pieces
    Drill Bit Sizes Included
    System of
    Measurement
    Drill Bit Point
    Style
    Specs.
    Met
    Mil. Spec.
    Container
    Type
    Mfr.
    Each
    Black Oxide
    251.0-13.0 mm (increments of 0.5 mm)MetricStandard Point
    		DIN 338—Metal CaseChicago-Latrobe2788A130000000
     
    Gold Oxide
    251.0 mm and 1.5 mm,
    2.0-13.0 mm (increments of 0.5 mm)    		MetricSplit Point
    		—NAS907 Type BMetal CaseViking Norseman Drill30155A57000000
     
    Titanium Nitride (TiN) Coated
    251.0-13.0 mm (increments of 0.5 mm)MetricSplit Point
    		—NAS907 Type BMetal CaseChicago-Latrobe30155A112000000
     
    Uncoated
    251.0-13.0 mm (increments of 0.5 mm)MetricStandard Point
    		DIN 338—Plastic BoxDormer Pramet30555A66000000
     

    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

    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.
    No. of
    Pieces
    Drill Bit Sizes Included
    System of
    Measurement
    Drill Bit Point
    Style
    Mil. Spec.
    Container
    Type
    Mfr.
    Each
    Uncoated
    251.0 mm and 1.5 mm,
    2.0-13.0 mm (increments of 0.5 mm)    		MetricSplit Point
    		NAS907 Type JMetal CaseViking Norseman Drill27945A270000000
     

    Chip-Clearing High-Speed Steel Drill Bit Sets

    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.
    Jobbers' LengthAbout Jobbers' Length
    Image of Product. Front orientation. Drill Bits. Chip-Clearing High-Speed Steel Drill Bit Sets.
    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
    Container
    Type
    Mfr.
    Each
    Black Oxide
    251.0-13.0 mm (increments of 0.5 mm)MetricSplit Point
    		Plastic CaseDormer Pramet3186A510000000
     
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