| Factory | Number | Cross Interchange Type | Relevance |
|---|---|---|---|
| MRC | 421S | Direct Cross Interchange | 6 |
| JOY MFG | G94AX421 | Direct Cross Interchange | 6 |
| NDH | 3421 | Direct Cross Interchange | 6 |
| SKF | 6421 | Direct Cross Interchange | 6 |
| TIMKEN | 481528 | Indirect Cross Interchange | 1 |
| Precision Seals & Bearings | 481528 | Indirect Cross Interchange | 1 |
| Precision Seals & Bearings | 16X30X7V | Indirect Cross Interchange | 1 |
| DT Components | 481528 | Indirect Cross Interchange | 1 |
| DT Components | 16X30X7V | Indirect Cross Interchange | 1 |