NPT 30° Helical Thread Mill
Built for high-performance threading, our NPT 30° Helical Thread Mills feature an aggressive helix angle that reduces side cutting pressure and promotes smooth, efficient chip evacuation. Ideal for internal NPT threads, the 30° helical design enhances tool control and surface finish, even in tough materials. Made from premium submicron grade carbide and available with optional AlTiN+ coating, these tools offer excellent heat resistance, longer tool life, and reliable performance at higher cutting speeds. Perfect for demanding pipe thread applications where precision and durability are essential.
| Thread Diameter/Pitch | A (Tool Diameter) | B (Length of Cut) | Q (Length) | S (Shank Diameter) | OAL | Flutes | Uncoated Tool # | Uncoated EDP # | AlTiN+ EDP # |
|---|---|---|---|---|---|---|---|---|---|
| 1/16, 1/8-27 | 0.218 | 0.534 | 0.018 | 0.2500 | 2.50 | 4 | TM218-27NPT-H | 101404 | 101416 |
| 1/8-27 | 0.280 | 0.758 | 0.018 | 0.3750 | 3.50 | 4 | TM280-27NPT-H | 101422 | 101446 |
| 1/4, 3/8-18 | 0.330 | 0.693 | 0.027 | 0.3750 | 3.50 | 4 | TM330-18NPT-H | 101428 | 101452 |
| 1/4, 3/8-18 | 0.382 | 0.800 | 0.027 | 0.4375 | 3.50 | 4 | TM382-18NPT-H | 101458 | 101470 |
| 1/2, 3/4-14 | 0.430 | 1.105 | 0.035 | 0.5000 | 3.50 | 4 | TM430-14NPT-H | 101476 | 101488 |