Mitsubishi TNMG160404L-ES US735 | Left-Hand Stainless Finish Insert
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TNMG160404L-ES US735
Mitsubishi Materials | The Specialist for Left-Hand Stainless Finishing
The Mitsubishi TNMG160404L-ES US735 is a high-performance Left-Hand (L) indexable turning insert designed for high-precision finishing. Engineered with the legendary US735 toughness grade, it is the primary solution for stainless steel machining where vibration and work-hardening are common issues. The ES chipbreaker is optimized for light depths of cut, ensuring perfect chip control and a superior surface finish on austenitic alloys.
Left-Hand Geometry | Fine Finishing | High Impact Resistance
Technical Code Breakdown
Triangular
0° Relief
Tolerance
Hole/Chip
16.5mm Edge
4.76mm Thick
0.4mm Radius
Left-Hand
Finish Breaker
Standard Comparison
| Spec Category | ISO (Metric) | ANSI (Inch) Equivalent |
|---|---|---|
| Model ID | TNMG160404L-ES | TNMG 331L ES |
| Inscribed Circle | 9.525 mm | 0.375" (3/8") |
US735 Toughness Grade
As a premium CVD turning insert, the US735 grade is Mitsubishi's go-to for interrupted cuts. It prevents thermal cracking and is highly effective at resisting built-up edge (BUE) in gummy materials, making it a reliable long-tail precision tool.
ES Finish-Cut Breaker
The ES chipbreaker features a high rake angle specifically for fine finishing. It minimizes cutting forces and heat buildup, which is critical when machining long-tail industrial tools to tight tolerances without deformation.
Recommended Cutting Parameters
| Material | Speed ($v_c$) | Feed ($f$) | DOC ($a_p$) |
|---|---|---|---|
| Stainless Steel (304/316) | 60 - 150 m/min | 0.05 - 0.18 mm/rev | 0.2 - 1.5 mm |
COMPATIBLE TOOL HOLDERS
Ensure you use Left-Hand (L) tool holders such as MTJNL 1616 or WTJNL 1616.
Shop Left-Hand Holders →
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.