| National Precision Bearing p/n | MRC Part Number |
| SS6200 | 200-S-ST |
| SS6200-2RS | 200-SZZ-ST |
| SS6201 | 201-S-ST |
| SS6201-2RS | 201-SZZ-ST |
| SS6202 | 202-S-ST |
| SS2602-2RS | 202-SZZ-ST |
| SS6202ZZ | 202-SFF-ST |
| SS6203 | 203-S-ST |
| SS6203-2RS | 203-SZZ-ST |
| SS6203ZZ | 203-SFF-ST |
| SS6204 | 204-S-ST |
| SS6204-2RS | 204-SZZ-ST |
| SS6204ZZ | 204-SFF-ST |
| SS6205 | 205-S-ST |
| SS6205-2RS | 205-SZZ-ST |
| SS6205ZZ | 205-SFF-ST |
| SS6206 | 206-S-ST |
| SS6206-2RS | 206-SZZ-ST |
| SS6206ZZ | 206-SFF-ST |
| 6000 | 100KS |
| 6000Z | 100KSF |
| 6000ZZ | 100KSFF |
| 6000RS | 100KSZ |
| 60002RS | 100KSZZ |
| 6000NR | 100KSG |
| 6000ZNR | 100KSFG |
| 6200 | 200S |
| 6200Z | 200SF |
| 6200ZZ | 200SFF |
| 6200RS | 200SZ |
| 62002RS | 200SZZ |
| 6200NR | 200SG |
| 6200ZNR | 200SFG |
| 6300 | 300S |
| 6300Z | 300SF |
| 6300ZZ | 300SFF |
| 6300RS | 300SZ |
| 63002RS | 300SZZ |
| 6300NR | 300SG |
| 6300ZNR | 300SFG |