The Coupling,bellows, cataloged under National Stock Number 1680-01-301-3363, is classified within Federal Supply Class 1680 (Miscellaneous Aircraft Accessories and Components) of the Aircraft Components and Accessories group. The manufacturer of record is Senior Operations Llc Dba Metal Bellows Div Metal Bellows. Government technical data includes 1 specification, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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 | 1680-01-301-3363 |
| Primary Part Number | 57294 |
| Item Name | Coupling,bellows |
| FSC / FSG | 1680 / 16 — Miscellaneous Aircraft Accessories and Components |
| Manufacturer | Senior Operations Llc Dba Metal Bellows Div Metal Bellows |
| Status | ACTIVE |
| General Characteristics Item Description | CRES |
| 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 |
| Part Number | Manufacturer |
|---|---|
| 57294 PRIMARY | Senior Operations Llc Dba Metal Bellows Div Metal Bellows (USA) |
| Reference | Meaning |
|---|---|
| 117305 | 5/9 Secondary reference Integral Aerospace, Llc Dba Pcx Aerosystems - Santa Ana Div Integral Aerospace, Llc Dba Pcx Aerosystems - Santa Ana |
| 117305 | 5/9 Secondary reference Senior Flexonics Inc |
| 117305 | 5/9 Secondary reference Vibroscope Co Inc the |
| 117305 | 5/9 Secondary reference Henkel Loctite Corp |
| 117305 | 5/9 Secondary reference Senior Operations Llc Dba Metal Bellows Div Metal Bellows |
NSN 1680-01-301-3363 is a Coupling,bellows, manufactured by Senior Operations Llc Dba Metal Bellows Div Metal Bellows, classified under FSC 1680, Miscellaneous Aircraft Accessories and Components. Status: active.
NSN 1680-01-301-3363 has 1 manufacturer part number on file: 57294 (Senior Operations Llc Dba Metal Bellows Div Metal Bellows).
2 possible matches (shared part number, not a government interchangeability claim): 5975-01-382-1657, 6650-01-392-8020. Verify interchangeability with system specifications before substitution.
Key specifications for 57294: General Characteristics Item Description: CRES; End Item Identification: AIRCRAFT MODEL P-3. 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 1680-01-301-3363 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.