| Manufacturer Part Number | HPK21100 |
| Diameter (Inch) | 37/94" |
| Diameter (Decimal Inch) | 0.394" |
| Diameter (mm) | 10.00mm |
| Shank Diameter (Inch) | 37/94" |
| Shank Diameter (Decimal Inch) | 0.394" |
| Shank Diameter (mm) | 10.00mm |
| Length of Cut (Inch) | 37/94" |
| Length of Cut (Decimal Inch) | 0.394" |
| Length of Cut (mm) | 10.00mm |
| LBS (Inch) | 62/63" |
| LBS (Decimal Inch) | 0.984" |
| LBS (mm) | 25.00mm |
| Overall Length (Inch) | 2-20/21" |
| Overall Length (Decimal Inch) | 2.953" |
| Overall Length (mm) | 75.00mm |
| Neck Diameter (mm) | 9.70mm |
| Number of Flutes | 4 |
| Series | HPK21 |
| Shank Type | Plain |
| Helix Angle (Degree) | 27 Degree / 30 Degree |
| Coating | C |
| Material | Carbide |
| Cutting Direction | Right Hand |
| Cut Type | Center |
| Product Type | Square End Mill-Extended Neck |