The Housing Assembly,coupling Inlet,, cataloged under National Stock Number 1680-01-137-2857, is classified within Federal Supply Class 1680 (Miscellaneous Aircraft Accessories and Components) of the Aircraft Components and Accessories group. Government technical data includes 2 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 1680-01-137-2857 |
| Item Name | Housing Assembly,coupling Inlet, |
| FSC / FSG | 1680 / 16 — Miscellaneous Aircraft Accessories and Components |
| Status | ACTIVE |
| FSC Application Data | 1680010794075 |
| General Characteristics Item Description | CONSISTS OF 6 MS21209-C0815 INSERTS,SCREW-LOCK;1 28285 HOUSING,COUPLINGINLET |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL D — Destroy Item |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | F |
| Reference | Meaning |
|---|---|
| 41484 | 3/2 Design control — primary reference U.S. Government activity |
NSN 1680-01-137-2857 is a Housing Assembly,coupling Inlet,, classified under FSC 1680, Miscellaneous Aircraft Accessories and Components. Status: active.
2 possible matches (shared part number, not a government interchangeability claim): 5962-01-204-7610, 3130-01-481-9848. Verify interchangeability with system specifications before substitution.
Key specifications for 1680-01-137-2857: FSC Application Data: 1680010794075; General Characteristics Item Description: CONSISTS OF 6 MS21209-C0815 INSERTS,SCREW-LOCK;1 28285 HOUSING,COUPLINGINLET. 2 specifications are 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 1680-01-137-2857 has DEMIL Code D. 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.