McMaster-Carr logo
    Filter by
    Drill Bit Size
    Attribute Image
    Drill Bit Point Type
    Industrial Info Compare
    Decimal Size Equivalent
    Shank Type
    Shank Size
    Attribute Image
    Point Angle
    Industrial Info Snippet
    Attribute Image
    System of Measurement
    Flute Direction
    Sold As
    Number of Flutes
    Bit Style
    DFARS Specialty Metals
    Export Control Classification Number (ECCN)
    Industrial Info Snippet
    Maximum Hardness
    Forward
    Enter e-mail addresses in the fields below
    Message
    Cancel
    Print
    How can we improve?
    Comments
    E-mail address (if you would like a response)
    17 Products
    About Drill Bits
    industrial info icon

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

    Material

    Material

    Length Class

    High-Speed Steel Drill Bits

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

    Jobbers' Length

    Round Shank

    Image of Product. Front orientation. Drill Bits. High-Speed Steel Drill Bits, Short Length, Round Shank.

    Short Length

    Round Shank

    Image of Product. Front orientation. Drill Bits. High-Speed Steel Drill Bits, Extended Length, Round Shank.

    Extended Length

    Round Shank

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

    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.
    Short Length—The most rigid bits for drilling the straightest holes.
    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
    Each
    Jobbers' Length
     
    Black Oxide
    17/32"
    		0.5313"
    		6 5/8"4.01"Round
    		17/32"Standard
    		2931A45000000
     
    Titanium Nitride (TiN) Coated
    17/32"
    		0.5313"
    		6 5/8"4.01"Round
    		17/32"Standard
    		3022A6400000
     
    Uncoated
    17/32"
    		0.5313"
    		6 5/8"4.01"Round
    		17/32"Standard
    		8870A4700000
     
    Short Length
     
    Uncoated
    17/32"
    		0.5313"
    		3 7/8"1.57"Round
    		17/32"Standard
    		8947A24200000
     
    Extended Length
     
    Black Oxide
    17/32"
    		0.5313"
    		8"3.95"Round
    		17/32"Standard
    		29315A16300000
    17/32"
    		0.5313"
    		12"7.93"Round
    		17/32"Standard
    		2939A3900000
    17/32"
    		0.5313"
    		18"11.93"Round
    		17/32"Standard
    		2955A35000000
     
    Titanium Nitride (TiN) Coated
    17/32"
    		0.5313"
    		8"4.75"Round
    		17/32"Standard
    		28965A81700000
     
    Uncoated
    17/32"
    		0.5313"
    		8"4.75"Round
    		17/32"Standard
    		2939A8300000
     

    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 Product. Front orientation. Drill Bits. Cobalt Steel Drill Bits, Extended Length, Round Shank.

    Extended Length

    Round 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.
    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.
    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.
    Titanium Aluminum Nitride (TiAlN) Coated—The hardest and most wear-resistant coating, especially at high temperatures. These bits are best for hard and abrasive materials, such as iron, titanium, and fiberglass.
    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
    17/32"
    		0.5313"
    		6 5/8"4.81"Round
    		17/32"Split
    		27995A544000000
     
    Titanium Aluminum Nitride (TiAlN) Coated
    17/32"
    		0.5313"
    		6 1/4"3.46"Round
    		17/32"Split
    		2753A156000000
     
    Uncoated
    17/32"
    		0.5313"
    		6 5/8"4"Round
    		17/32"Split
    		3069A8200000
     
    Extended Length
     
    Uncoated
    17/32"
    		0.5313"
    		8"3.68"Round
    		17/32"Split
    		3063A14400000
     

    Carbide-Tipped Drill Bits

    Image of Product. Front orientation. Drill Bits. Carbide-Tipped Drill Bits, Short Length, Round Shank.

    Short Length

    Round Shank

    Image of Product. Front orientation. Drill Bits. Carbide-Tipped Drill Bits, Extended Length, Round Shank.

    Extended Length

    Round Shank

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

    Standard

    Split

    Performance similar to solid carbide but at a lower price point. Like carbide bits, these are stronger than cobalt and high-speed steel and maintain their sharp edges when drilling abrasive material. However, when drilling tough metals like iron and hardened steel, upgrade to carbide for longer life.
    Short Length—The most rigid bits for drilling the straightest holes.
    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.
    Shank
    Drill Bit
    Size
    Decimal Size
    Equiv.
    Overall
    Lg.
    Max. Drilling
    Dp.
    Type
    Size
    Drill Bit
    Point Type
    Each
    Short Length
     
    Uncoated
    17/32"
    		0.5313"
    		3 7/8"1.59"Round
    		17/32"Standard
    		28805A238000000
    17/32"
    		0.5313"
    		3 7/8"1.59"Round
    		17/32"Split
    		2750A3600000
     
    Extended Length
     
    Uncoated
    17/32"
    		0.5313"
    		8"3.95"Round
    		17/32"Standard
    		29465A3900000
     

    Carbide-Tipped Drill Bits for Hardened Steel

    Image of Product. Front orientation. Drill Bits. Carbide-Tipped Drill Bits for Hardened Steel, Jobbers' Length, Round Shank.

    Jobbers' Length

    Round Shank

    Straight flutes withstand the heavy pressure needed to penetrate hardened steel. These bits cut more aggressively and resist stress better than spiral-flute bits. A lower-priced alternative to solid carbide, they stay sharp when drilling abrasive material but won’t last as long.
    Jobbers' Length—These bits have the balance of rigidity and length needed for most applications.
    Shank
    Drill Bit
    Size
    Decimal Size
    Equiv.
    Overall
    Lg.
    Max. Drilling
    Dp.
    Type
    Size
    Drill Bit
    Point Type
    Each
    Jobbers' Length
     
    Uncoated
    17/32"
    		0.5313"
    		6"2.12"Round
    		17/32"Notched
    		2973A43000000
     
    back to top