The Collar Upper, cataloged under National Stock Number 1680-01-055-4825, is classified within Federal Supply Class 1680 (Miscellaneous Aircraft Accessories and Components) of the Aircraft Components and Accessories group. Government technical data includes 1 specification, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 1680-01-055-4825 |
| Item Name | Collar Upper |
| FSC / FSG | 1680 / 16 — Miscellaneous Aircraft Accessories and Components |
| Status | ACTIVE |
| General Characteristics Item Description | ALUMINIUM ALLOY 2024-T351 QQ-A-225/6,ANODIZE MIL-A-8625 TYPE I,2.930 IN. H,2.400 IN. DIA IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| 1685144-1 | 5/9 Secondary reference U.S. Government activity |
| 1685144-3 | 3/2 Design control — primary reference U.S. Government activity |
NSN 1680-01-055-4825 is a Collar Upper, classified under FSC 1680, Miscellaneous Aircraft Accessories and Components. Status: active.
Key specifications for 1680-01-055-4825: General Characteristics Item Description: ALUMINIUM ALLOY 2024-T351 QQ-A-225/6,ANODIZE MIL-A-8625 TYPE I,2.930 IN. H,2.400 IN. DIA IN; End Item Identification: U/O 1685T100-1 ACFT F16. 1 specification is documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
NSN 1680-01-055-4825 has DEMIL Code Q. Demilitarization may be required before disposal or transfer to non-military entities.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.