- Features
| 1640 manufacturer grade |
| 6.6 mm H shank |
| 1.6 mm maximum working engagement |
| 1 maximum working engagement ratio |
| Interrupted edge property |
| Center cutting capability |
| 4.4 mm Dia core at face |
| L cutting length |
| Without coolant entry |
| No coolant exit |
| 7.3 mm Dia cutting face contact |
| SFW (EFW) feed direction |
| Right helix flute hand |
| 10.5 deg radial rake |
| 13.5 deg axial rake |
| 19 mm L usable |
| 2 maximum regrinds |
| 27 mm overhang |
| 0.35 mm corner radius |
| 90 deg y-axis rot |