| National Precision Bearing p/n | Fafnir Part Number |
| 6000 | 9100K |
| 6000Z | 9100KD |
| 6000ZZ | 9100KDD |
| 6000RS | 9100P |
| 60002RS | 9100PP |
| 6000NR | 9100KG |
| 6000ZNR | 9100KDG |
| 6200 | 200K |
| 6200Z | 200KD |
| 6200ZZ | 200KDD |
| 6200RS | 200P |
| 62002RS | 200PP |
| 6200NR | 200KG |
| 6200ZNR | 200KDG |
| 6300 | 300K |
| 6300Z | 300KD |
| 6300ZZ | 300KDD |
| 6300RS | 300P |
| 63002RS | 300PP |
| 6300NR | 300KG |
| 6300ZNR | 300KDG |