The Housing,gearbox,turbine Engine, cataloged under National Stock Number 2840-01-374-1946, 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 The Boeing Company. Government technical data includes 2 specifications, 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 2840-01-374-1946 |
| Primary Part Number | 7-311320011-5 |
| Item Name | Housing,gearbox,turbine Engine |
| FSC / FSG | 2840 / 28 — Gas Turbines and Jet Engines, Aircraft, Prime Moving; and Components |
| Manufacturer | The Boeing Company |
| Status | ACTIVE |
| Engine Section Location | ACCESSORY GEARBOX |
| Material | ALUMINUM ALLOY 2024 OVERALL |
| 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 |
|---|---|
| 7-311320011-5 PRIMARY | The Boeing Company (USA) |
| Reference | Meaning |
|---|---|
| 7-311320011-5 | 5/9 Secondary reference Mcdonnell Douglas Helicopter Co Inc |
| 7-311320011 | D/9 Drawing number reference only Mcdonnell Douglas Helicopter Co Inc |
NSN 2840-01-374-1946 is a Housing,gearbox,turbine Engine, manufactured by The Boeing Company, classified under FSC 2840, Gas Turbines and Jet Engines, Aircraft, Prime Moving; and Components. Status: active.
NSN 2840-01-374-1946 has 1 manufacturer part number on file: 7-311320011-5 (The Boeing Company).
1 possible match (shared part number, not a government interchangeability claim): 2840-01-516-4023. Verify interchangeability with system specifications before substitution.
Key specifications for 7-311320011-5: Overall Length: 15.050 INCHES NOMINAL IN; Engine Section Location: ACCESSORY GEARBOX; End Item Identification: USED ON AH-64A A; Material: ALUMINUM ALLOY 2024 OVERALL. 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 2840-01-374-1946 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.