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    5 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, Morse Taper Shank.

    Jobbers' Length

    Morse Taper 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.
    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.
    Shank
    Drill Bit
    Size
    Decimal Size
    Equiv.
    Overall
    Lg.
    Max. Drilling
    Dp.
    Type
    Size
    Drill Bit
    Point Type
    Mfr.
    Each
    Jobbers' Length
     
    Black Oxide
    49/64"
    		0.7656"
    		9 7/8"4.85"Morse Taper
    		Morse 2Standard
    		Chicago-Latrobe2929A412000000
    25/32"
    		0.7813"
    		9 7/8"4.82"Morse Taper
    		Morse 2Standard
    		Chicago-Latrobe2929A41300000
     
    Extended Length
     
    Black Oxide
    49/64"
    		0.7656"
    		9 7/8"4.85"Round
    		49/64"Standard
    		Chicago-Latrobe29315A18600000
    25/32"
    		0.7813"
    		9 7/8"4.82"Round
    		25/32"Standard
    		Chicago-Latrobe29315A18700000
     

    Counterbore Drill Bits

    Image of Product. Front orientation. Contains Annotated. Counterbore Drill Bits. Counterbore Drill Bits.
    Often called step drill bits, these cut a pilot hole and counterbore in a single pass to eliminate tool changes and ensure precise alignment. Made of high-speed steel, they handle a wide range of materials, including aluminum, plastic, and stainless steel. They can be resharpened to extend tool life. The body diameter may decrease after multiple sharpenings.
    Dia.
    Lg.
    For Screw
    Size
    Body
    Step
    Step
    Overall
    Point
    Angle
    For Use On
    Mfr.
    Each
    Uncoated High-Speed Steel
    1/2"
    		0.781"0.531"1"9 7/8"118°Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, SteelRepublic Drill8914A370000000
     
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