| National Precision Bearing p/n | Ball-Bearing-Rod-end-Female Part Number |
| MS21153-1 | MS21153 |
| MS21153-2 | MS21153 |
| MS21153-3 | MS21153 |
| MS21153-4 | MS21153 |
| MS21153-5 | MS21153 |
| MS21153-6 | MS21153 |
| MS21153-6C | MS21153 |
| MS21153-7 | MS21153 |
| MS21153-7C | MS21153 |
| MS21153-8 | MS21153 |
| MS21153-9 | MS21153 |
| MS21153-10 | MS21153 |
| MS21153-11 | MS21153 |