The Boss,compressor Case,turbine Eng, cataloged under National Stock Number 2840-00-605-4644, 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 2 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 2840-00-605-4644 |
| Primary Part Number | 563857 |
| Item Name | Boss,compressor Case,turbine Eng |
| 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 |
| FSC Application Data | TF30 TURBINE ENGINE,ACFT |
| General Characteristics Item Description | TITANIUM ALLOY AMS4921,O/A DIM. 2.280 IN. NOM LG,2.000IN. NOM W,1.331 IN. MIN,1.351 IN. MAX H IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL B — Remove Demilitarization Key Points |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
NSN 2840-00-605-4644 is a Boss,compressor Case,turbine Eng, 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 2840-00-605-4644 has 3 manufacturer part numbers on file: 563857 (Motorola Canada Ltd), 563857 (Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney), 563857 (Magellan Aerospace, Mississauga).
1 possible match (shared part number, not a government interchangeability claim): 5340-00-663-1534. Verify interchangeability with system specifications before substitution.
Key specifications for 563857: FSC Application Data: TF30 TURBINE ENGINE,ACFT; General Characteristics Item Description: TITANIUM ALLOY AMS4921,O/A DIM. 2.280 IN. NOM LG,2.000IN. NOM W,1.331 IN. MIN,1.351 IN. MAX H IN. 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 2840-00-605-4644 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.