| Aluminium > 8% silicon: | 50 |
|---|---|
| Cast iron gg/gts: | 33 |
| For thread: | M4 |
| Ggg cast iron: | 26 |
| Inox austenite.: | 8 |
| Inox duplex: | 6 |
| Inox ferrite./martenz.: | 10 |
| Length of steps l3: | 11 mm |
| Ø drill bits d1 x ø countersink d2: | 4.3 x 8.0 mm |
| Spiral length l2: | 37 mm |
| Steel < 1000 n/mm2: | 24 |
| Steel < 1400 n/mm2: | 19 |
| Steel < 700 n/mm2: | 30 |
| Total length l1: | 79 mm |
Short step drill, 90°, for through holes
Design: 90° depth angle, accurate quality.
Application: for through holes for screws according to DIN EN 20273 and regrooves under screw heads 90°. Shape A and B, according to DIN 74, part 1. For screws according to DIN 963 and DIN 964. Designed especially for use on NC and CNC machines.
Despite our best efforts, we cannot guarantee that the published technical data and photos do not contain inaccuracies or errors, which, however, cannot be a basis for claims.