998V-AA Series 4-Flute Ball Nose End Mill with TixSiN Coating for Hardened Steel Machining
998V-AA
The 998V-AA is a high-performance 4-flute ball nose end mill from LV® Tool, a leading Taiwanese cutting tool manufacturer. Engineered for precision and durability, this end mill features an advanced TixSiN coating with high silicon content, providing exceptional high-temperature and wear resistance. Its design ensures high-precision diameter tolerance and excellent cutting stability, making it the ideal choice for machining a wide range of materials, including tool steel, alloy steel, stainless steel, cast iron, and welded steel. This series offers a long service life and superior performance for demanding industrial applications.
Key Features of the 998V-AA Ball Nose End Mill
The 998V-AA series, manufactured by LV INTERNATIONAL CO., LTD., is engineered to deliver exceptional performance in a variety of milling operations. Its design and materials are optimized for precision, longevity, and stability in demanding machining environments.
- Advanced TixSiN Coating: Features a high-silicon TixSiN coating that provides superior resistance to high temperatures and wear, significantly extending the tool's service life.
- 4-Flute Ball Nose Design: The 4-flute geometry is ideal for finishing and semi-finishing operations, producing excellent surface quality on contoured surfaces.
- High Precision Tolerance: Manufactured to strict diameter tolerances, ensuring consistent and accurate machining results for every part.
- Excellent Cutting Stability: The robust design minimizes vibration and ensures smooth, stable cutting, even in challenging materials, enhancing workpiece accuracy.
Recommended Applications & Materials
This versatile ball nose end mill is suitable for high-speed machining across a broad spectrum of materials commonly used in mold & die, automotive, and general manufacturing industries. As a leading cutting tool supplier, we recommend this series for the following materials:
- Tool Steel
- Alloy Steel
- Stainless Steel
- Cast Iron
- Welded Steel Components
Detailed Specifications
Please refer to the table below for detailed dimensions and model numbers available in the 998V-AA series. For custom specifications or wholesale inquiries, please contact our technical team.
| Model | Diameter (R) | Flute Length (mm) | Shank Diameter (mm) | Flutes | Overall Length (mm) |
|---|---|---|---|---|---|
| 0104 | 0.5R | 2 | 4 | 4 | 50 |
| 0154 | 0.75R | 3 | 4 | 4 | 50 |
| 0204 | 1R | 4 | 4 | 4 | 50 |
| 0254 | 1.25R | 5 | 4 | 4 | 50 |
| 0304 | 1.5R | 5.5 | 4 | 4 | 50 |
| 0404 | 2R | 6 | 4 | 4 | 50 |
| 0504 | 2.5R | 9 | 6 | 4 | 50 |
| 0604 | 3R | 9 | 6 | 4 | 50 |
| 0614 | 3R | 9 | 6 | 4 | 75 |
| 0804 | 4R | 16 | 8 | 4 | 75 |
| 1004 | 5R | 20 | 10 | 4 | 75 |
| 1014 | 5R | 20 | 10 | 4 | 100 |
| 1204 | 6R | 24 | 12 | 4 | 75 |
| 1214 | 6R | 24 | 12 | 4 | 100 |
| 1404 | 7R | 28 | 16 | 4 | 100 |
| 1604 | 8R | 32 | 16 | 4 | 100 |
| 2004 | 10R | 40 | 20 | 4 | 150 |
| 2504 | 12.5R | 50 | 25 | 4 | 150 |

- Download
998V-AA Series 4-Flute Ball Nose End Mill with TixSiN Coating for Hardened Steel Machining Professional Precision Carbide End Mills and Cutting Tools Manufacturing
LV Tool provides 998V-AA Series 4-Flute Ball Nose End Mill with TixSiN Coating for Hardened Steel Machining for buyers who need dependable precision carbide end mills and cutting tools in professional CNC machining environments. This product supports manufacturers, machine shops, and tooling distributors looking for stable cutting performance, accurate dimensions, and reliable results across demanding materials and production conditions.
Our carbide tools are produced with premium materials, precision CNC grinding, coating expertise, and ISO 9001-certified quality control. This helps customers improve tool life, surface finish, chip evacuation, cutting stability, and machining efficiency in applications such as mold making, automotive parts, aerospace components, electronics, and precision machinery.
As a Taiwan manufacturer with OEM ODM support, LV Tool helps buyers evaluate product fit, standard dimensions, custom tooling needs, and long-term supply requirements. We focus on practical cutting tool solutions that reduce downtime, control cost, and support consistent production quality.


