| Manufacturer Part Number | HPK21120 |
| Diameter (Inch) | 43/91" |
| Diameter (Decimal Inch) | 0.472" |
| Diameter (mm) | 12.00mm |
| Shank Diameter (Inch) | 43/91" |
| Shank Diameter (Decimal Inch) | 0.472" |
| Shank Diameter (mm) | 12.00mm |
| Length of Cut (Inch) | 43/91" |
| Length of Cut (Decimal Inch) | 0.472" |
| Length of Cut (mm) | 12.00mm |
| LBS (Inch) | 1-4/39" |
| LBS (Decimal Inch) | 1.102" |
| LBS (mm) | 28.00mm |
| Overall Length (Inch) | 3-9/26" |
| Overall Length (Decimal Inch) | 3.346" |
| Overall Length (mm) | 85.00mm |
| Neck Diameter (mm) | 11.70mm |
| 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 |