| EDP Number | 191RCAL |
| Product Code-ANSI | SNMG432EGZ-AC420K |
| Product Code-ISO | SNMG120408N-GZ |
| Manufacturer Grade Identification | AC420K |
| Series | AC420K |
| Cutting Edge Length (Decimal Inch) | 0.5000" |
| Cutting Edge Length (mm) | 12.70mm |
| Nose Radius (Decimal Inch) | 0.0315" |
| Nose Radius (mm) | 0.80mm |
| Inscribed Circle Diameter (Decimal Inch) | 0.5000" |
| Inscribed Circle Diameter (mm) | 12.70mm |
| Hole Diameter (mm) | 5.16mm |
| Insert Thickness (Decimal Inch) | 0.1874" |
| Insert Thickness (mm) | 4.76mm |
| Relief Angle | 0 Degree |
| Rake Angle | Negative |
| Insert Material | Carbide |
| Tolerance Class | M |
| Chip Breaker | EGZ |
| Corner Angle | 90 |
| Insert Style | SNMG |
| Primary Workpiece Material | Cast Iron |
| Coating | Super FF coat |
| Coating Process | CVD |
| Standard Designation of the Grade, Main Application | K20, K15, K15 |
| Insert Holding Method | Pin & Clamp |