The Diffuser Assy, cataloged under National Stock Number 2840-01-546-0643, is classified within Federal Supply Class 2840 (Gas Turbines and Jet Engines, Aircraft, Prime Moving; and Components) of the Engines, Turbines, and Components group. The manufacturer of record is Md Helicopters Inc. The record lists 3 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 2840-01-546-0643 |
| Primary Part Number | 369D28302-11 |
| Item Name | Diffuser Assy |
| FSC / FSG | 2840 / 28 — Gas Turbines and Jet Engines, Aircraft, Prime Moving; 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 |
|---|---|
| 369D28302-11 PRIMARY | Md Helicopters Inc (USA) |
| 369D28302 | Md Helicopters Inc (USA) |
| 369D28308 | Md Helicopters Inc (USA) |
| Reference | Meaning |
|---|---|
| 10452524 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
| 369D28302-11 | 3/9 Design control — primary reference The Boeing Company |
NSN 2840-01-546-0643 is a Diffuser Assy, manufactured by Md Helicopters Inc, classified under FSC 2840, Gas Turbines and Jet Engines, Aircraft, Prime Moving; and Components. Status: active.
NSN 2840-01-546-0643 has 3 manufacturer part numbers on file: 369D28302-11 (Md Helicopters Inc), 369D28302 (Md Helicopters Inc), 369D28308 (Md Helicopters Inc).
1 possible match (shared part number, not a government interchangeability claim): 4720-01-549-4360. Verify interchangeability with system specifications before substitution.
Key specifications for 369D28302-11: Special Features: THE ITEM NAMED BY THE MANUFACTURER IS A DIFFUSER ASSEMBLY. 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.