| Factory | Number | Cross Interchange Type | Relevance |
|---|---|---|---|
| TIMKEN | 6321 | Direct Cross Interchange | 2 |
| SEALED POWER | F6321 | Indirect Cross Interchange | 1 |
| NSN | 3110013089146 | Indirect Cross Interchange | 1 |
| NAPA | 6321 | Indirect Cross Interchange | 1 |
| SKF | K6321 | Indirect Cross Interchange | 1 |
| SKF | 1112995 | Indirect Cross Interchange | 1 |
| FAG | K6321 | Indirect Cross Interchange | 1 |
| PERFECT CIRCLE | 6321 | Indirect Cross Interchange | 1 |
| STUDEBAKER | 59268 | Indirect Cross Interchange | 1 |
| STUDEBAKER | 24234 | Indirect Cross Interchange | 1 |
| MASSEY FERGUSON | 831367M1 | Indirect Cross Interchange | 1 |
| MASSEY FERGUSON | 2823B | Indirect Cross Interchange | 1 |
| TYSON | 6321 | Indirect Cross Interchange | 1 |
| Le Tourneau | CF2481 | Indirect Cross Interchange | 1 |
| Le Tourneau | 0532481 | Indirect Cross Interchange | 1 |
| RIV | 033766 | Indirect Cross Interchange | 1 |
| All Parts | 6321 | Indirect Cross Interchange | 1 |
| ABC | 6321 | Indirect Cross Interchange | 1 |
| BOWER | 6321 | Indirect Cross Interchange | 1 |
| CR | BR6321 | Indirect Cross Interchange | 1 |
| WHITE MOTOR | 831367M1 | Indirect Cross Interchange | 1 |
| WHITE MOTOR | 149084 | Indirect Cross Interchange | 1 |
| MACK | 64AX4 | Indirect Cross Interchange | 1 |
| MACK | 149084 | Indirect Cross Interchange | 1 |
| GM | 140376 | Indirect Cross Interchange | 1 |
| DAF | 213690 | Indirect Cross Interchange | 1 |