The Expander,support,turbine, cataloged under National Stock Number 2840-00-671-4251, 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 Sci Technology, Inc. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 2840-00-671-4251 |
| Primary Part Number | E1143 |
| Item Name | Expander,support,turbine |
| FSC / FSG | 2840 / 28 — Gas Turbines and Jet Engines, Aircraft, Prime Moving; and Components |
| Manufacturer | Sci Technology, Inc |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| E1143 PRIMARY | Sci Technology, Inc (USA) |
| 6788349 PRIMARY | Rolls-Royce Corporation (USA) |
| E1153 | Sci Technology, Inc (USA) |
| Reference | Meaning |
|---|---|
| 6788349 | 5/9 Secondary reference Allison Transmission Inc Dba Allison Transmission, Inc |
| E1153 | 5/9 Secondary reference Sci Systems Inc |
| E1143 | 5/9 Secondary reference Sci Systems Inc |
| 6788349 | 5/9 Secondary reference General Motors Corp |
NSN 2840-00-671-4251 is a Expander,support,turbine, manufactured by Sci Technology, Inc, classified under FSC 2840, Gas Turbines and Jet Engines, Aircraft, Prime Moving; and Components. Status: active.
NSN 2840-00-671-4251 has 3 manufacturer part numbers on file: E1143 (Sci Technology, Inc), 6788349 (Rolls-Royce Corporation), E1153 (Sci Technology, Inc).
1 possible match (shared part number, not a government interchangeability claim): 5930-01-630-0950. Verify interchangeability with system specifications before substitution.
Key specifications for E1143: End Item Identification: T-56 AIRCRAFT ENGINE. 0 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.
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.