| Factory | Number | Cross Interchange Type | Relevance |
|---|---|---|---|
| SNR | N321 | Direct Cross Interchange | 37 |
| SNR | N321B | Direct Cross Interchange | 37 |
| FAG | N321 | Direct Cross Interchange | 37 |
| FAG | N321M | Direct Cross Interchange | 37 |
| KOYO | N321 | Direct Cross Interchange | 37 |
| NACHI | N321 | Direct Cross Interchange | 37 |
| NSK-RHP | N321 | Direct Cross Interchange | 37 |
| NTN | N321 | Direct Cross Interchange | 37 |
| NTN | N321G1 | Direct Cross Interchange | 37 |
| SKF | N321 | Direct Cross Interchange | 37 |
| SKF | N321E | Direct Cross Interchange | 37 |
| SKF | N321M | Direct Cross Interchange | 37 |
| RHP | N321 | Direct Cross Interchange | 37 |
| NDH | BU1321Z | Direct Cross Interchange | 37 |
| LINK BELT | MU1321CX | Direct Cross Interchange | 37 |
| LINK BELT | N321E | Direct Cross Interchange | 37 |
| BOWER | MU1321CL | Direct Cross Interchange | 37 |
| MRC | MR321C | Direct Cross Interchange | 37 |
| ABMA | 105RN03 | Direct Cross Interchange | 37 |
| TORRINGTON | 105RN03 | Direct Cross Interchange | 37 |
| RIV | 22DBPV | Direct Cross Interchange | 37 |
| Westinghouse Electric | 763683 | Direct Cross Interchange | 37 |
| IMPEXMETAL | N321 | Direct Cross Interchange | 37 |
| R&M | MRJ105 | Direct Cross Interchange | 37 |
| Aetna Bearing | RK1321L | Direct Cross Interchange | 37 |
| POLLARD | AH3021L | Direct Cross Interchange | 37 |
| Norma-Hoffmann | R405 | Direct Cross Interchange | 37 |
| HOFFMANN | R405 | Direct Cross Interchange | 37 |
| ZVL-ZKL | N321 | Direct Cross Interchange | 37 |
| ZVL-ZKL | N321B | Direct Cross Interchange | 37 |
| SRO | N321 | Direct Cross Interchange | 37 |
| SCHEERER | RN321 | Direct Cross Interchange | 37 |
| GPZ | 2321 | Direct Cross Interchange | 37 |
| Fafnir Bearing | NM105 | Direct Cross Interchange | 37 |
| STEYR | N321 | Direct Cross Interchange | 37 |
| DT Components | MU1321CHL | Indirect Cross Interchange | 1 |
| Precision Seals & Bearings | MU1321CHL | Indirect Cross Interchange | 1 |