M4-M20 Metric Thread Mill – Full Profile Solid Carbide CNC Cutter | Extended Length for Deep Threading
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Solid Carbide Metric Thread Milling Cutter (M4–M20) – Extended Reach CNC Thread Mill
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Full Profile Metric Threading M4–M20
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Extended Length Design for Deep Hole Threading
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Cutting Conditions for Various Materials
Product Overview:
This extended solid carbide thread milling cutter is engineered for high-precision machining of internal ISO metric threads ranging from M5×0.8 to M20×2.5. Manufactured from premium tungsten carbide, the tool features a full-profile 60° cutting edge, a long reach body (up to 105mm total length), and multi-flute geometry for superior performance in CNC machining centers.
Specifications Table (Key Sizes):
| Thread | OD (mm) | Cutter Dia. D | Flutes | Cutting Depth ap (mm) | Total Length L (mm) | 
|---|---|---|---|---|---|
| M5×0.8 | 6 | 3.9 | 3 | 16.4 | 60 | 
| M8×1.25 | 8 | 6.2 | 3 | 25.7 | 70 | 
| M10×1.5 | 10 | 8 | 3 | 30.8 | 80 | 
| M12×1.75 | 12 | 9 | 3 | 30.8 | 90 | 
| M16×2 | 12 | 11.5 | 3 | 41.0 | 100 | 
| M20×2.5 | 16 | 15.0 | 4 | 48.8 | 105 | 
Recommended Cutting Conditions:
(Depending on material & diameter)
| Material Type | Spindle Speed (RPM) | Feed Rate (mm/min) | 
|---|---|---|
| Cast Iron / Copper Alloys | 1500 – 8000 | 200 – 750 | 
| Carbon Steel (<30HRC) | 1500 – 7000 | 200 – 700 | 
| Hardened Steel (30–50 HRC) | 1000 – 4500 | 125 – 500 | 
| Stainless Steel | 1100 – 4300 | 150 – 500 | 
| Aluminum / Brass | 10000 – 20000 | 400 – 1000 | 
Note: Ap = 1.5D (cutting depth), Ae = 0.1D for best performance.
Applications:
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Mold making 
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Aerospace and automotive parts 
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General-purpose internal threading 
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Deep cavity threading with reduced deflection - 
Wide Thread Range Compatibility – Supports ISO Metric threads from M5×0.8 up to M20×2.5, including M5, M6, M8, M10, M12, M14, M16, M20. 
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Extended Overall Length (Up to 105mm) – Designed for deep hole applications in mold making and aerospace CNC projects. 
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Premium Solid Carbide Body – Made from ultra-fine tungsten carbide with enhanced wear resistance and tool life. 
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Excellent Cutting Performance – Suitable for hardened steels (up to 50 HRC), stainless steel, cast iron, copper alloys, and plastics. 
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Precision Thread Milling – Delivers clean and accurate full thread profiles with 60° angle and optimized chip evacuation. - 
solid carbide thread mill 
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M4-M20 metric thread milling cutter 
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CNC internal thread tool 
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extended length thread cutter 
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full profile thread mill 
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ISO metric thread mill 
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carbide thread mill for stainless steel 
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CNC thread milling cutter 
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carbide thread mill for hardened steel 
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metric thread cutter for aluminum 
 
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| SIZE | M5*0.8*D6, M6*1, M8*1.25, M8*1, M10*1, M10*1.5, M10*1.25, M12*1.75, M12*1.5, M12*1, M14*2, M16*2, M20*2.5 | 
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