| National Precision Bearing p/n | Federal Part Number |
| 6000 | 9100 |
| 6000Z | 9100F |
| 6000ZZ | 9100FF |
| 6000RS | 9100R |
| 60002RS | 9100RR |
| 6000NR | 9100CG |
| 6000ZNR | 9100GF |
| 6200 | 1200 |
| 6200Z | 1200F |
| 6200ZZ | 1200FF |
| 6200RS | 1200R |
| 62002RS | 1200RR |
| 6200NR | 1200CG |
| 6200ZNR | 1200GF |
| 6300 | 1300 |
| 6300Z | 1300F |
| 6300ZZ | 1300FF |
| 6300RS | 1300R |
| 63002RS | 1300RR |
| 6300NR | 1300CG |
| 6300ZNR | 1300GF |