Description
N - GENERAL APPLICATIONS - DIN 371 - CATALOGUE 6657
Material: HSS-Co
Notes: for tapping of deep blind holes up to 2 times the ø of the male.
| Ø | L1 | L2 | L3 | D2 h9 | a h12 | Ø Pre-hole | Passo |
| 2 | 45 | 8 | 4 | 2.8 | 2.1 | 1.6 | 0.4 |
| 3 | 56 | 11 | 5 | 3.5 | 2.7 | 2.5 | 0.5 |
| 4 | 63 | 13 | 7 | 4.5 | 3.4 | 3.3 | 0.7 |
| 5 | 70 | 16 | 8 | 6 | 4.9 | 4.2 | 0.8 |
| 6 | 80 | 19 | 10 | 6 | 4.9 | 5 | 1 |
| 7 | 80 | 19 | 10 | 7 | 5.5 | 6 | 1 |
| 8 | 90 | 22 | 12 | 8 | 6.2 | 6.8 | 1.25 |