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    38 Products

    Thread Mills

    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. Front orientation. Thread Mills. For Internal Threads.
    Thread mills cut internal UNC, UNEF, UNF, UNJ, or UNS threads, but the threads they create have a fixed pitch.
    For Min.
    Screw Size
    Threads
    per In.
    Thread
    Lg.
    Overall
    Lg.
    No. of
    Flutes
    Shank
    Size
    Mfr.
    Each
    Aluminum Titanium Nitride (AlTiN)-Coated Carbide
    No. 4
    		403/16"2 1/2"21/4"Scientific Cutting Tools5277N110000000
    No. 6
    		3217/64"2 1/2"31/4"Scientific Cutting Tools5277N12000000
    No. 8
    		3217/64"2 1/2"31/4"Scientific Cutting Tools5277N13000000
    No. 10
    		2411/32"2 1/2"31/4"Scientific Cutting Tools5277N14000000
    No. 10
    		3221/64"2 1/2"31/4"Scientific Cutting Tools5277N15000000
    1/4"
    		2033/64"2 1/2"31/4"Scientific Cutting Tools5277N16000000
    5/16"
    		185/8"2 1/2"31/4"Scientific Cutting Tools5277N17000000
    5/16"
    		2441/64"2 1/2"31/4"Scientific Cutting Tools5277N24000000
    3/8"
    		1625/32"3"45/16"Scientific Cutting Tools5277N18000000
    3/8"
    		2449/64"3"45/16"Scientific Cutting Tools5277N25000000
    7/16"
    		207/8"3"43/8"Scientific Cutting Tools5277N26000000
    1/2"
    		137/8"3"43/8"Scientific Cutting Tools5277N19000000
    1/2"
    		207/8"3"43/8"Scientific Cutting Tools5277N27000000
    9/16"
    		1829/32"3"43/8"Scientific Cutting Tools5277N28000000
    3/4"
    		141 5/16"4"41/2"Scientific Cutting Tools5277N31000000
    3/4"
    		161 11/32"4"41/2"Scientific Cutting Tools5277N29000000
    1"
    		121 17/32"4"55/8"Scientific Cutting Tools5277N32000000
     
    For Internal Threads (Metric)
    Image of ProductInUse. Front orientation. Thread Mills. For Internal Threads.
    Image of Product. Front orientation. Thread Mills. For Internal Threads.
    Thread mills cut internal metric threads, but the threads they create have a fixed pitch.
    For Min.
    Screw Size
    Thread
    Pitch, mm
    Thread
    Lg.
    Overall
    Lg.
    No. of
    Flutes
    Shank
    Size
    Mfr.
    Each
    Aluminum Titanium Nitride (AlTiN)-Coated Carbide
    M5
    		0.821/64"2 9/32"30.2362"Scientific Cutting Tools5277N210000000
    M6
    		131/64"2 9/32"30.2362"Scientific Cutting Tools5277N22000000
    M8
    		1.2521/32"2 9/32"30.2362"Scientific Cutting Tools5277N23000000
    M10
    		1.551/64"2 31/32"40.315"Scientific Cutting Tools5277N33000000
     
    For External Threads (UNJ)
    Image of ProductInUse. Front orientation. Thread Mills. For External Threads.
    Image of Product. Front orientation. Thread Mills. For External Threads.
    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 In.
    Overall
    Lg.
    Shank
    Size
    Neck
    Dia.
    Mfr.
    Each
    Aluminum Titanium Nitride (AlTiN)-Coated Carbide
    123 1/2"1/2"0.34"Scientific Cutting Tools6210N170000000
    163"3/8"0.24"Scientific Cutting Tools6210N16000000
    183"3/8"0.24"Scientific Cutting Tools6210N15000000
    203"3/8"0.24"Scientific Cutting Tools6210N14000000
    243"3/8"0.24"Scientific Cutting Tools6210N13000000
    283"3/8"0.24"Scientific Cutting Tools6210N12000000
    323"3/8"0.24"Scientific Cutting Tools6210N11000000
     
    For Internal/External Threads (UNC, UNEF, UNF, UNS) and Internal Threads (UNJ)
    Image of ProductInUse. Front orientation. Thread Mills. For External Threads, For Internal Threads.
    Image of ProductInUse. Front orientation. Thread Mills. For External Threads, For Internal Threads.
    Image of Product. Front orientation. Thread Mills. For External Threads, For Internal Threads.
    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 Min.
    Screw Size
    Threads
    per In.
    Overall
    Lg.
    Shank
    Size
    Neck
    Dia.
    Mfr.
    Each
    Aluminum Titanium Nitride (AlTiN)-Coated Carbide
    No. 2
    		56 to 801 1/2"1/8"0.034"Scientific Cutting Tools4425N11000000
    No. 4
    		48 to 802"3/16"0.045"Scientific Cutting Tools4425N1200000
    No. 6
    		32 to 562"3/16"0.049"Scientific Cutting Tools4425N1300000
    No. 8
    		32 to 562"3/16"0.07"Scientific Cutting Tools4425N1400000
    No. 10
    		28 to 482"3/16"0.075"Scientific Cutting Tools4425N1500000
    No. 12
    		24 to 482"3/16"0.08"Scientific Cutting Tools4425N1600000
    1/4"
    		24 to 482 1/2"1/4"0.104"Scientific Cutting Tools4425N1700000
    5/16"
    		16 to 482 1/2"1/4"0.153"Scientific Cutting Tools4425N1800000
    3/8"
    		18 to 483"3/8"0.192"Scientific Cutting Tools4425N19000000
    1/2"
    		12 to 483"3/8"0.24"Scientific Cutting Tools4425N21000000
     
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