The Ring,swage, cataloged under National Stock Number 1680-01-506-5664, is classified within Federal Supply Class 1680 (Miscellaneous Aircraft Accessories and Components) of the Aircraft Components and Accessories group. The manufacturer of record is Md Helicopters Inc. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 1680-01-506-5664 |
| Primary Part Number | 369D21805 |
| Item Name | Ring,swage |
| FSC / FSG | 1680 / 16 — Miscellaneous Aircraft Accessories and Components |
| Manufacturer | Md Helicopters Inc |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 369D21805 PRIMARY | Md Helicopters Inc (USA) |
| 369D21805 | Leonardo Spa Helicopters Division - Production Site (ITA) |
| Reference | Meaning |
|---|---|
| 369D21805 | 3/9 Design control — primary reference The Boeing Company |
| 369D21805 | 5/9 Secondary reference Mcdonnell Douglas Helicopter Co Inc |
NSN 1680-01-506-5664 is a Ring,swage, manufactured by Md Helicopters Inc, classified under FSC 1680, Miscellaneous Aircraft Accessories and Components. Status: active.
NSN 1680-01-506-5664 has 2 manufacturer part numbers on file: 369D21805 (Md Helicopters Inc), 369D21805 (Leonardo Spa Helicopters Division - Production Site).
1 possible match (shared part number, not a government interchangeability claim): 1615-01-633-8294. Verify interchangeability with system specifications before substitution.
Key specifications for 369D21805: End Item Identification: 369-MD500, HELICOPTER. 0 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.
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.