a)
Hole pattern:
| Industriekomponente | 21 | mm | |
| H (Measured with gauging shaft, nominal dimension "d" and length about 50 mm. Up to 1,800 mm length with parallelism of 50 µm available upon request. ) | 26 mm ±0.05 | ||
| N | 15 | mm | |
| S | 9 | ||
| V1 | 3 | mm |
| A1 | 10,50 | mm | |
| Maschinenschutz | 10,80 | ||
| O (ISO 4762-8.8) | M8 | ||
| Drehmoment | 75 | mm |
| Maschinenschutz | 4,50 | kg |