| Factory | Number | Cross Interchange Type | Relevance |
|---|---|---|---|
| FEDERAL | 508RING | Direct Cross Interchange | 12 |
| McQuay-Norris | BB508R | Direct Cross Interchange | 12 |
| L&S Bearing | R508 | Direct Cross Interchange | 12 |
| SKF | R508 | Direct Cross Interchange | 12 |
| BCA | R508 | Direct Cross Interchange | 10 |
| SKF Automotive | GR508 | Direct Cross Interchange | 10 |
| ABC | RW588 | Direct Cross Interchange | 10 |
| CHRYSLER | YW508 | Direct Cross Interchange | 10 |
| Precision Seals & Bearings | R508 | Direct Cross Interchange | 6 |
| DT Components | R508 | Direct Cross Interchange | 6 |
| SKF | GR508 | Indirect Cross Interchange | 2 |
| FEDERAL MOGUL | R508 | Indirect Cross Interchange | 2 |
| TIMKEN | R508 | Indirect Cross Interchange | 1 |