The Damper,main Rotor, cataloged under National Stock Number 1680-01-466-3644, is classified within Federal Supply Class 1680 (Miscellaneous Aircraft Accessories and Components) of the Aircraft Components and Accessories group. The manufacturer of record is The Boeing Company. The record lists 4 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 1680-01-466-3644 |
| Primary Part Number | 369D21400-503 |
| Item Name | Damper,main Rotor |
| FSC / FSG | 1680 / 16 — Miscellaneous Aircraft Accessories and Components |
| Manufacturer | The Boeing Company |
| Status | ACTIVE |
| 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 |
|---|---|
| J-15640-6-V | Md Helicopters Inc (USA) |
| 369D21400-503 | Leonardo Spa Helicopters Division - Production Site (ITA) |
| 369D21400-501 | Md Helicopters Inc (USA) |
| 369D21400-503 PRIMARY | The Boeing Company (USA) |
| Reference | Meaning |
|---|---|
| 369D21400-503 | 5/9 Secondary reference Mcdonnell Douglas Helicopter Co Inc |
NSN 1680-01-466-3644 is a Damper,main Rotor, manufactured by The Boeing Company, classified under FSC 1680, Miscellaneous Aircraft Accessories and Components. Status: active.
NSN 1680-01-466-3644 has 4 manufacturer part numbers on file: J-15640-6-V (Md Helicopters Inc), 369D21400-503 (Leonardo Spa Helicopters Division - Production Site), 369D21400-501 (Md Helicopters Inc), 369D21400-503 (The Boeing Company).
1 possible match (shared part number, not a government interchangeability claim): 1615-01-633-8297. Verify interchangeability with system specifications before substitution.
Key specifications for 369D21400-503: End Item Identification: AGUSTA HELICOPTER, MODEL A129. 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.
NSN 1680-01-466-3644 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.