McMaster-Carr logo
    Filter by
    Drill Bit Size
    Attribute Image
    System of Measurement
    Drill Bit Point Type
    Overall Length
    Attribute Image
    Sold As
    Shank Type
    Industrial Info Compare
    Flute Type
    Number of Sizes
    Shank Size
    Attribute Image
    DFARS Specialty Metals
    Export Control Classification Number (ECCN)
    Industrial Info Snippet
    Maximum Drilling Depth
    Attribute Image
    Flute Direction
    Point Angle
    Industrial Info Snippet
    Attribute Image
    Machine Taper Number
    For Material Thickness
    Length Class
    Industrial Info Snippet
    Number of Flutes
    Specifications Met
    Enter e-mail addresses in the fields below
    Message
    Cancel
    Comments
    E-mail address (if you would like a response)
    2 Products
    About Drill Bits
    industrial info icon

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

    High-Speed Steel Step Drill Bits

    Image of Product. Front orientation. Drill Bits. High-Speed Steel Step Drill Bits.
    Image of Specification. Standard. Front orientation. Contains Border. Standard Point. For Metal.

    Standard

    Drill multiple hole sizes using only one bit. These have steps with progressively larger diameters—the deeper they drill, the bigger the hole. Count the steps as you drill to achieve the proper size. These bits also deburr as they cut, so they're good for thin materials like sheet metal and plastic panels. Wear and heat resistant, high-speed steel is versatile for use on a range of materials.
    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, mm
    Decimal Size Equiv.
    Overall
    Lg., mm
    Type
    Size
    Drill Bit
    Point Type
    Each
     
    Uncoated
    5.0, 7.5, 10.0, 13.0, 16.0, 19.0, 21.0, 23.0, 26.0, 29.0, 31.0, 33.0, 35.00.1968", 0.2953", 0.3937", 0.5118", 0.6299", 0.748", 0.8268", 0.9055", 1.0236", 1.1417", 1.2205", 1.2992", 1.378"
    79Hex
    11.1 mmStandard
    89275A15000000
     

    High-Speed Steel Drill Bits

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

    Jobbers' Length

    Morse Taper 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.
    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.
    Shank
    Drill Bit
    Size, mm
    Decimal Size
    Equiv.
    Overall
    Lg., mm
    Max. Drilling
    Dp., mm
    Type
    Size
    Drill Bit
    Point Type
    Each
    Jobbers' Length
     
    Black Oxide
    33.01.299"
    334132Morse Taper
    Morse 4Standard
    3070A980000000
     
    back to top