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    29 Products

    Thread Mills
    3D CAD models available

    Cut a range of thread sizes with a single tool. These thread mills can also produce both right-hand and left-hand threads. All are made of solid carbide with an aluminum-titanium-nitride (AlTiN) coating, so they have high strength and excellent wear resistance, even when cutting hard and abrasive material. Use them in a CNC machine that allows helical interpolation.
    When used for internal threading, thread mills can create threads of any size equal to or greater than the minimum size listed. They leave space in the hole for chips to fall, and a broken thread mill can fall into the hole without damaging the workpiece.
    For Internal Threads (UNC, UNEF, UNF, UNJ, UNS)
    Image of ProductInUse. Front orientation. Thread Mills. For Internal Threads.
    Image of Product. For Internal Threading. Front orientation. Thread Mills. For Internal Threads.

    For Internal Threading

    Thread mills cut internal UNC, UNEF, UNF, UNJ, or UNS threads, but the threads they create have a fixed pitch.
    For Minimum
    Screw Size
    Threads
    per Inch
    Thread
    Length
    Overall
    Length
    Number
    of Flutes
    Shank
    Size
    Each
    Aluminum Titanium Nitride (AlTiN)-Coated Carbide
    No. 4
    403/16"2 1/2"21/4"5277N11$107.86
    No. 6
    3217/64"2 1/2"31/4"5277N12107.86
    No. 8
    3217/64"2 1/2"31/4"5277N13110.65
    No. 10
    2411/32"2 1/2"31/4"5277N14110.65
    No. 10
    3221/64"2 1/2"31/4"5277N15110.65
    1/4"
    2033/64"2 1/2"31/4"5277N16119.95
    5/16"
    185/8"2 1/2"31/4"5277N17129.25
    3/8"
    1625/32"3"45/16"5277N18152.50
    1/2"
    137/8"3"43/8"5277N19157.15
     
    For Internal Threads (Metric)
    Image of ProductInUse. Front orientation. Thread Mills. For Internal Threads.
    Image of Product. For Internal Threading. Front orientation. Thread Mills. For Internal Threads.

    For Internal Threading

    Thread mills cut internal metric threads, but the threads they create have a fixed pitch.
    For Minimum
    Screw Size
    Thread
    Pitch
    Thread
    Length
    Overall
    Length
    Number
    of Flutes
    Shank
    Size
    Each
    Aluminum Titanium Nitride (AlTiN)-Coated Carbide
    M5
    0.8 mm21/64"2 9/32"30.2362"5277N21$107.86
    M6
    1 mm31/64"2 9/32"30.2362"5277N22119.95
    M8
    1.25 mm21/32"2 9/32"30.2362"5277N23138.55
     
    For External Threads (UNJ)
    Image of ProductInUse. Front orientation. Thread Mills. For External Threads.
    Image of Product. For Internal/External and External Threading. Front orientation. Thread Mills. For External Threads.

    For Internal/External

    and External Threading

    Thread mills cut external UNJ threads with a single point, producing rounded threads that are commonly used for high-stress fastening applications involving heavy loads and high pressures. Each cuts a single thread pitch.
    Threads
    per Inch
    Overall
    Length
    Shank
    Size
    Neck
    Diameter
    Each
    Aluminum Titanium Nitride (AlTiN)-Coated Carbide
    123 1/2"1/2"0.34"6210N17$147.64
    163"3/8"0.24"6210N16106.31
    183"3/8"0.24"6210N15106.31
    203"3/8"0.24"6210N14106.31
    243"3/8"0.24"6210N13106.31
    283"3/8"0.24"6210N12106.31
    323"3/8"0.24"6210N11106.31
     
    For Internal/External Threads (UNC, UNEF, UNF, UNS) and Internal Threads (UNJ)
    Image of ProductInUse. Internal Threading. Front orientation. Thread Mills. For Internal Threads, For External Threads.
    Image of ProductInUse. External Threading. Front orientation. Thread Mills. For Internal Threads, For External Threads.

    Internal

    Threading

    External

    Threading

    Image of Product. For Internal/External and External Threading. Front orientation. Thread Mills. For Internal Threads, For External Threads.

    For Internal/External

    and External Threading

    Thread mills have a single cutting point that cuts internal/external UNC, UNEF, UNF, or UNS threads in a range of different pitches on both the inside and outside of the workpiece. They can also cut internal UNJ threads in a range of different pitches.
    For Minimum
    Screw Size
    Threads per
    Inch
    Overall
    Length
    Shank
    Size
    Neck
    Diameter
    Each
    Aluminum Titanium Nitride (AlTiN)-Coated Carbide
    No. 2
    56 to 801 1/2"1/8"0.034"4425N11$50.22
    No. 4
    40 to 642"3/16"0.045"4425N1250.22
    No. 6
    32 to 642"3/16"0.049"4425N1350.22
    No. 8
    32 to 562"3/16"0.07"4425N1450.22
    No. 10
    24 to 562"3/16"0.075"4425N1550.22
    No. 12
    24 to 562"3/16"0.08"4425N1650.22
    1/4"
    18 to 562 1/2"1/4"0.104"4425N1755.36
    5/16"
    16 to 482 1/2"1/4"0.153"4425N1855.36
    3/8"
    14 to 403"3/8"0.192"4425N1964.58
    1/2"
    12 to 323"3/8"0.24"4425N2164.58
     
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