TNMG Turning Insert
TNMG160404, TNMG160408, and TNMG160412 carbide inserts feature a PVD coating and an MA chipbreaker for turning carbon steel, alloy steel, and stainless steel. Moreover, the carbide substrate improves wear resistance, while the MA geometry controls chip flow during continuous and light interrupted cutting.
In addition, these TNMG inserts fit CNC lathes, turning centers, and automated production lines. Therefore, manufacturers use them for external turning, finish turning, and semi-finishing in automotive, mold, machinery, energy, and general metalworking applications. As a result, one insert series supports multiple machining tasks with the same tooling platform.
TNMG Carbide Inserts Specification:

| Model | L | IC | S | d | R |
| TNMG120404-MA | 16.5 | 9.525 | 4.76 | 3.81 | 0.4 |
| TNMG120408-MA | 16.5 | 9.525 | 4.76 | 3.81 | 0.8 |
| TNMG120412-MA | 16.5 | 9.525 | 4.76 | 3.81 | 1.2 |
Notes: We offer full customization for all specs. For more information, please contact us at any time.
Bwin Grade for Carbide Inserts:
| Grade | Coating | Color | Workpiece material | Application |
| BP020 | CVD | Yellow | P10-P20 | Ideal for semi-finishing through to finishing of mild steel. |
| BP025 | CVD | Black | P25-P35 | Ideal for machining quenched and tempered steel |
| BP030 | CVD | Yellow | P25-P35 | BP030 is the advanced upgrade of BP020; specifically engineered for interrupted steel cutting. |
| BP050 | CVD | Two-color | P35-P45 | Optimized for turning various steels; the premier choice for superior wear resistance. |
| BP070 | CVD | Colorful | P15-P40
H10-H30 |
Suitable for hardened steel and difficult-to-machine materials. |
| BM035 | PVD | Dark Purple | M10-M30 | Excels in stainless semi-finishing and grooving; the premier grade for steel and stainless milling/drilling. |
| BM055 | PVD | Purple Gold | M15-M35 | The premier grade for versatile steel and stainless milling and drilling. |
| BM085 | PVD | Colorful | M10-M30 S15-S30 H10-H25 |
Ideal for difficult-to-machine materials such as nickel and chromium alloys, etc. |
| BN01 | Uncoated | Silver | Designed for processing non-ferrous metals, including copper and aluminum alloys. | |
| BT015 | PVD | Dark Gray | P20-P30 K10-K30 |
Optimized for light milling of both steel and cast iron. |
| BT030 | PVD | Light Purple | P10-P25 M15-M35 |
Ideal for continuous turning and threading of steel and stainless steel. |
| BT065 | PVD | Golden Yellow | P10-P20 | Excels in steel semi-finishing and grooving; the premier grade for steel milling and drilling. |
| BK115 | CVD | Black | K15-K30 | The ideal grade for cast iron semi-finishing and lightly interrupted cutting. |
| BC060 | Uncoated | Silver | P30-P40 | Suitable for processing various steel components and cast iron. |
| BC075 | Uncoated | Black | P40-P50 | Engineered for high-performance machining of hardened steel and cast iron. |
| BC090 | Uncoated | Yellow | P40-P50 | Optimized for precision machining of hardened steel and cast iron. |
Notes: As a matter of fact, Bwin delivers a comprehensive range of high-quality CNC spare parts. To be specific, our catalog covers carbide end mills, carbide inserts, turning bar tools, face milling tools, hole drilling tools, thread tapping tools, carbide burrs, tool holders, machine vises, live centers, chucks, CNC angle heads, carbide saw blades, and clamping kits. What’s more, we also stock brand-name carbide inserts from trusted manufacturers.
Beyond that, we take parts support to the next level. In other words, we don’t just sell components — we actively keep your machines humming and your business moving forward. Above all, every service we deliver aims to minimize your downtime and maximize your output.











