UN 5/16"x24-2xDo - 24TPI Pitch UN Helical Flute Internal Carbide Thread Mill with Radial Coolant - (Helicool R HCR Series - Vardex)
106-00040
Thread Milling TM Solid Carbide HeliCool-Radial Cooling IN 24TPI ISO Shank Diameter 8 (mm) Cutting Diameter 6.68 (mm) Tool Overhang 16.4 (mm) VTH Grade
- For Internal Machining
- For UN threads
- Ideal for Steel, Stainless Steel, HRSA's, Cast Iron & Non-Ferrous
- Made from Micro grain Solid Carbide
- TiCN coating for longer tool life
- Radial Coolant For Through Holes

| Thread Standard | UN |
| Pitch | 24TPI |
| EXT/INT | IN |
| Coolant | Yes |
| L | 16.4mm |
| L1 | 16.4mm |
| Le | 16.4mm |
| Cutting Dia | 6.68mm |
| Z | 3 |
| Zt | 15 |
| Grade | VTH |
| Coating | TiCN |
| Description | HCR08066L16-I24UNFTMVTH |
| Shank Dia | 8mm |
106-00040 UN 5/16"X24-2XDO - 24TPI PITCH UN HELICAL FLUTE INTERNAL CARBIDE THREAD MILL WITH RADIAL COOLANT - (HELICOOL R HCR SERIES - VARDEX)