The Case and Vane Assembly,compresso, cataloged under National Stock Number 2840-00-157-3666, 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 | 2840-00-157-3666 |
| Primary Part Number | 668395 |
| Item Name | Case and Vane Assembly,compresso |
| 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 |
| Design Type | AXIAL COMPRESSOR |
| Criticality Code Justification | AGAV |
| Engine Section Location | COMPRESSOR |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL B — Remove Demilitarization Key Points |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | Y |
NSN 2840-00-157-3666 is a Case and Vane Assembly,compresso, 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 2840-00-157-3666 has 2 manufacturer part numbers on file: 668395 (Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney), 2173317 (Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney).
1 possible match (shared part number, not a government interchangeability claim): 5305-01-077-6812. Verify interchangeability with system specifications before substitution.
Key specifications for 668395: Design Type: AXIAL COMPRESSOR; Criticality Code Justification: AGAV; Engine Section Location: COMPRESSOR; Special Features: ORIGINAL NAME CASE AND VANE ASSEMBLY,AXIAL COMPRESSOR,TURBINE ENGINE. 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 2840-00-157-3666 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.