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

    Carbide Drill Bits for Carbon Fiber, Fiberglass, and Graphite

    Image of Product. Front orientation. Drill Bits. Carbide Drill Bits for Carbon Fiber, Fiberglass, and Graphite, Jobbers' Length.

    Jobbers' Length

    Cut clean holes in abrasive material without fraying or delaminating the surface. Made of carbide, these bits resist wear to retain a sharp edge, even after after hundreds of cuts.
    Shank
    Drill Bit
    Size, mm
    Decimal Size
    Equiv.
    Overall
    Lg., mm
    Max. Drilling
    Dp., mm
    Type
    Size,
    mm
    Point
    Angle
    Drill Bit
    Point Type
    Bit
    Style
    Mfr.
    Each
    Jobbers' Length
     
    Diamond Coated
    11.5
    		0.4528"
    		12076Round
    		11.5140°Brad
    		FlutedUltra Tool3162A740000000
    12.0
    		0.4724"
    		12076Round
    		12140°Brad
    		FlutedUltra Tool3162A75000000
    12.5
    		0.4921"
    		12076Round
    		12.5140°Brad
    		FlutedUltra Tool3162A76000000
     

    Carbide Drill Bits

    Image of Product. Front orientation. Drill Bits. Carbide Drill Bits, Jobbers' Length, Round Shank.

    Jobbers' Length

    Round Shank

    The hardest and most wear-resistant drill bits you can buy. Carbide bits stay sharp at high temperatures and faster speeds for the best performance on hard and difficult-to-machine materials. They last 10 to 20 times longer than their closest alternative, cobalt steel. Carbide can be brittle, however, so these bits require a rigid machine tool holder to prevent breakage and should not be used in hand drilling applications.
    Jobbers' Length—These bits have the balance of rigidity and length needed for most applications.
    Uncoated—Excellent for a range of materials but won't last as long as coated bits.
    Shank
    Drill Bit
    Size, mm
    Decimal Size
    Equiv.
    Overall
    Lg., mm
    Max. Drilling
    Dp., mm
    Type
    Size
    Drill Bit Point
    Type
    Mfr.
    Each
    Jobbers' Length
     
    Uncoated
    11.5
    		0.4528"
    		12076Round
    		11.5 mmFour Facet
    		Ultra Tool3030A690000000
    12.0
    		0.4724"
    		12076Round
    		12 mmFour Facet
    		Ultra Tool3030A45000000
    12.5
    		0.4921"
    		12076Round
    		12.5 mmFour Facet
    		Ultra Tool3030A71000000
     

    Long-Reach Carbide Ball End Mills for Mold Making

    Image of ProductInUse. Ball Cut Style. Front orientation. Ball Cut Style. Long-Reach Carbide Ball End Mills for Mold Making.
    Image of Product. Front orientation. End Mills. Long-Reach Carbide Ball End Mills for Mold Making, 4 Flutes.

    Ball Cut Style

    4 Flutes

    These end mills have an extended neck with a reduced diameter that prevents them from rubbing against your workpiece when deep milling. Also known as runner cutters, they cut channels with precise angles and dimensions, reducing the need for additional finishing. They have a ball end for milling rounded slots, slopes, and contours. All are center cutting, allowing plunge cuts into a surface.
    Made of solid carbide, these end mills are harder, stronger, and more wear resistant than high-speed steel and cobalt steel for the longest life and best finish on hard material. Their extreme hardness means they are brittle, so a highly rigid setup, such as a CNC machine, is necessary to prevent the end mill from breaking.
    End mills with fewer flutes provide better chip clearance for high-volume, high-speed plunge, slotting, and roughing cuts; end mills with more flutes provide a finer finish and operate with less vibration when run at high speeds.
    Uncoated Carbide—Use uncoated end mills for general purpose milling and short production runs. They will stay sharper than coated end mills and leave a better finish on soft materials like aluminum.
    Aluminum Titanium Nitride (AlTiN)-Coated Carbide—Use aluminum titanium nitride (AlTiN)-coated end mills for demanding, high-speed jobs in hard material as well as for longer production runs. The coating reduces friction and vibration as they’re used, making them more wear resistant than uncoated end mills. They dissipate heat better than other end mills, especially at high speeds. At high temperatures, the coating creates a layer of aluminum oxide that transfers heat to the chips, keeping the tool cool, even when used without lubrication.
    Mill, mm
    Neck,
    mm
    Dia.
    Dia. Tolerance
    Shank Dia.,
    mm
    Dia.
    Lg.
    Lg. of
    Cut, mm
    Overall
    Lg., mm
    Flute
    Spacing
    Helix
    Angle
    For Use On
    End Mill Type
    Cut
    Style
    Mfr.
    Each
    Uncoated Carbide
     
    4 Flutes
    100.0000 to 0.0991109.54718120Equal30°Aluminum, Brass, Bronze, Copper, Fiberglass, Hardened Steel, Iron, Nickel, Plastic, Stainless Steel, Steel, Titanium, Tool SteelCenter CuttingBallTitan USA8086N440000000
     
    Aluminum Titanium Nitride (AlTiN)-Coated Carbide
     
    4 Flutes
    100.0000 to 0.0991109.54718120Equal30°Hardened Steel, Iron, Nickel, Stainless Steel, Steel, Titanium, Tool SteelCenter CuttingBallTitan USA8086N69000000
     
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