| Factory | Number | Cross Interchange Type | Relevance |
|---|---|---|---|
| Precision Seals & Bearings | DRK321A | Direct Cross Interchange | 6 |
| TIMKEN | DRK321A | Direct Cross Interchange | 5 |
| FEDERAL MOGUL | RA321A | Direct Cross Interchange | 4 |
| SKF | DK321A | Direct Cross Interchange | 4 |
| CHICAGO RAWHIDE | DK321A | Direct Cross Interchange | 3 |
| SKF | SDK321A | Indirect Cross Interchange | 1 |