The Baffle,airflow,aircraft Gas Turb, cataloged under National Stock Number 2840-01-506-4308, 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 Hamilton Sundstrand Corporation Dba Collins Aerospace. Government technical data includes 5 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. 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 | 2840-01-506-4308 |
| Primary Part Number | 555891 |
| Item Name | Baffle,airflow,aircraft Gas Turb |
| FSC / FSG | 2840 / 28 — Gas Turbines and Jet Engines, Aircraft, Prime Moving; and Components |
| Manufacturer | Hamilton Sundstrand Corporation Dba Collins Aerospace |
| Status | ACTIVE |
| Hardness Rating | 49.5 ROCKWELL C NOMINAL OVERALL |
| Material Document and Classification | AMS4027 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Diameter | 4.772 INCHES MINIMUM AND 4.778 INCHES MAXIMUM IN |
| Engine Section Location | FAN |
| Material | ALUMINUM ALLOY 6061 OVERALL |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL B — Remove Demilitarization Key Points |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 555891 PRIMARY | Hamilton Sundstrand Corporation Dba Collins Aerospace (USA) |
NSN 2840-01-506-4308 is a Baffle,airflow,aircraft Gas Turb, manufactured by Hamilton Sundstrand Corporation Dba Collins Aerospace, classified under FSC 2840, Gas Turbines and Jet Engines, Aircraft, Prime Moving; and Components. Status: active.
NSN 2840-01-506-4308 has 1 manufacturer part number on file: 555891 (Hamilton Sundstrand Corporation Dba Collins Aerospace).
1 possible match (shared part number, not a government interchangeability claim): 5315-01-553-3663. Verify interchangeability with system specifications before substitution.
Key specifications for 555891: Hardness Rating: 49.5 ROCKWELL C NOMINAL OVERALL; Material Document and Classification: AMS4027 ASSN STD SINGLE MATERIAL RESPONSE OVERALL; Diameter: 4.772 INCHES MINIMUM AND 4.778 INCHES MAXIMUM IN; Engine Section Location: FAN. 5 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 2840-01-506-4308 has DEMIL Code B. 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.