M4-M20 Metric Thread Mill – Full Profile Solid Carbide CNC Cutter | Extended Length for Deep Threading carbide end milll
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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
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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.
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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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Technical FAQ & Buying Guide
Absolutely. Our CNC carbide inserts (including CNMG, WNMG, DNMG, and APMT series) are manufactured strictly adhering to international ISO/ANSI specifications. A CNMG 120408 from OYYU BEYOND will flawlessly fit any standard turning tool holder or indexable tool from major global brands like Sandvik Coromant, Kennametal, Iscar, Walter, or SECO, providing a highly cost-effective premium alternative without sacrificing tolerance or tool life.
We offer optimized CVD and PVD multi-layer coatings for different ISO material groups:
- For Carbon/Alloy Steel (ISO P): Choose our thick multi-layer CVD coated grades (e.g., Al2O3 + TiN). They provide exceptional crater wear resistance and thermal barriers during high-speed dry or wet roughing.
- For Stainless Steel (ISO M): Choose our nano-structured PVD coated grades with sharp, positive chipbreakers (like -TM or -MA). This combination prevents work hardening and effectively controls sticky chips.
The optimal cutting parameters vary depending on the workpiece hardness and operation type:
- For General Steel Turnings: Recommended cutting speed ($V_c$) ranges from 150 to 280 m/min, with a feed rate ($f$) of 0.15 to 0.45 mm/rev.
- For Stainless Steel Finishing: Recommended cutting speed ($V_c$) is 120 to 200 m/min, with a feed rate ($f$) of 0.10 to 0.25 mm/rev.Always adjust parameters based on early wear patterns: increase $V_c$ if built-up edge occurs, or reduce $V_c$ if severe flank wear is observed.
Yes, we support machine shops, distributors, and global buyers with tiered wholesale pricing and competitive volume discounts. We also provide OEM custom manufacturing solutions for tool holders and carbide inserts based on your technical drawings. Contact our team to request a quick B2B quotation.
We provide secure worldwide express shipping (via DHL, FedEx, and UPS) with specialized, vibration-proof industrial packaging to ensure tools arrive in perfect condition. In-stock items are dispatched within 24-48 hours, while custom or bulk orders typically have a stable lead time of 15-25 days.
All our cutting tools and tool holders are manufactured strictly in accordance with ISO 9001 and international industrial standards. Every batch undergoes 100% rigorous quality control testing using high-precision optical measuring equipment to ensure reliable tool life and stable performance in continuous mass production.