The Chamber,combustion,aircraft Gas, cataloged under National Stock Number 2840-01-088-7104, 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 Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney. Government technical data includes 3 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers 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 | 2840-01-088-7104 |
| Primary Part Number | 4057939 |
| Item Name | Chamber,combustion,aircraft Gas |
| FSC / FSG | 2840 / 28 — Gas Turbines and Jet Engines, Aircraft, Prime Moving; and Components |
| Manufacturer | Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney |
| Status | ACTIVE |
| Criticality Code Justification | FEAT |
| Diameter | 24.990 INCHES MINIMUM AND 25.010 INCHES MAXIMUM IN |
| Engine Section Location | COMBUSTION CHAMBER |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL D — Destroy Item |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | Y |
NSN 2840-01-088-7104 is a Chamber,combustion,aircraft Gas, manufactured by Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney, classified under FSC 2840, Gas Turbines and Jet Engines, Aircraft, Prime Moving; and Components. Status: active.
NSN 2840-01-088-7104 has 2 manufacturer part numbers on file: 4057939 (Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney), 4055386 (Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney).
1 possible match (shared part number, not a government interchangeability claim): 2540-01-166-1342. Verify interchangeability with system specifications before substitution.
Key specifications for 4057939: Criticality Code Justification: FEAT; Diameter: 24.990 INCHES MINIMUM AND 25.010 INCHES MAXIMUM IN; Overall Length: 12.110 INCHES MINIMUM AND 12.210 INCHES MAXIMUM IN; Engine Section Location: COMBUSTION CHAMBER. 3 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 2840-01-088-7104 has DEMIL Code D. 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.