| IT-61 | Magnetic Particle Inspection | Non-Destructive Testing |
| Supercedes: None | Superceded By: None |
| Number | Name | State | Country |
| 90024568 | AAA Plating & Inspection Inc | CA | United States |
| 90008061 | Barry Avenue Plating Co. Inc. | CA | United States |
| 90049333 | California Metal Processing Company | CA | United States |
| 90024581 | EMBEE PROCESSING LLC | CA | United States |
| 90050552 | Golden State Magnetic & Penetrant Lab Inc | CA | United States |
| 90044966 | Machine Specialties inc | NC | United States |
| 90024675 | MAGELLAN AEROSPACE PROCESSING | NY | United States |
| 90043905 | Mistras Group dba Mistras Services | CA | United States |