| Designation | TT-I-521 |
| Status | Canceled |
| Last Update | 2018-05-25 |
| Last Document Update | 1978-03-21 |
| Publisher | Defense Standardization Program Office |
| FSG-75 |
| FSC-7510 |
| Document Category |
| Federal Specification |
| Version | Date | Distribution Statement | Access | Pages |
|---|---|---|---|---|
| Revision A Amendment 1 | 1967-12-27 | A | Public | 1 |
| Revision A Interim Revision | 1959-05-20 | A | Public | 6 |
| Amendment 1 | 1940-01-30 | A | Public | 1 |
| Base Document | 1930-12-09 | A | Public | 4 |
| Service | Organization | Code |
|---|---|---|
| Lead Standardization Activity | U.S. Army Combat Capabilities Development Command Soldier Center | GL |
| Preparing Activity | General Services Administration | FAS |