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

    Multidiameter High-Speed Steel Step Drill Bits

    Image of Product. Side1 orientation. Drill Bits. Multidiameter High-Speed Steel Step Drill Bits, Style A, 3-Flat Shank, Round Shank.

    Style A

    Round Shank

    3-Flat Shank

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

    Standard

    With no fixed diameters, one bit cuts holes of almost any size within a range. Slip a washer (not included) over the bit to set your diameter. The washer acts as stop while drilling, so choose a washer with an inner diameter that matches your desired hole size. Wear and heat resistant, these high-speed steel bits are versatile for use on a range of 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.
    Shank
    Style
    Drill Bit Size
    Decimal Size
    Equiv.
    Overall
    Lg.
    Max. Drilling
    Dp.
    Type
    Size
    Drill Bit
    Point Type
    Each
     
    Black Oxide
    A5/8" to 1 3/16"0.625" to 1.1875"
    3"0.08"Round/3-Flat
    3/8"Standard
    8910A13000000
    A1" to 1 5/8"1" to 1.625"
    3 1/4"0.08"Round/3-Flat
    3/8"Standard
    8910A14000000
     
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