L421K Series from YG1 Thread Mills Solid Carbide w/ Coolant Holes for NPS Thread ANSI B 1.20.1 1"-2" - 11.50 - NPS 4 OAL
- Suitable for a wide range of materials including steels, stainless steels, cast iron, and non-ferrous alloys
- Multi-purpose design supports both internal and external threading operations
- High-performance carbide substrate for extended tool life and wear resistance
- Advanced coatings (e.g., TiAlN variants) improve heat resistance and reduce friction
- Enables thread milling on CNC machines with helical interpolation capability
- One tool can produce multiple thread sizes/pitches (within limits), reducing tool inventory
- Lower cutting forces compared to tapping—ideal for thin-walled or delicate parts
- Reduced risk of tool breakage; safer for high-value workpieces
- Excellent chip control—chips are evacuated more efficiently than with taps
- Allows threading in blind holes without bottoming issues
| Quick Ship Items | No, but I will Ship Soon |
| Material | Carbide |
| Flute Count | 4 |
| Thread Diameter | 1-2 |
| Thread Pitch | 11.50 |
| Thread Form | NPS - National Pipe Straight |
| Cutting Diameter (Mm.) | 15.75 |
| Cutting Diameter(In.) | 0.6200 |
| Connection Diameter (In.) | 0.6250 |
| Connection Diameter (Mm.) | 15.88 |
| Depth of Cut Maximum (Mm.) | 33.12 |
| Depth of Cut Maximum (In.) | 1.3040 |
| Overall Length (Mm.) | 101.60 |
| Overall Length (In.) | 4.0000 |
| Helix Angle (Deg.) | 15 |
| Coating | TiAIN |
| Cutting Direction | Right |
| Product Measurement Standard | Inch |
| Shank | Plain |
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