The Seal,nozzle Stg 1, cataloged under National Stock Number 2840-01-018-0478, 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 Chromalloy Gas Turbine Llc Div Chromalloy Dallas. Government technical data includes 2 specifications, cited from the U.S. Government catalog. The record lists 5 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 2840-01-018-0478 |
| Primary Part Number | 3901T83G01 |
| Item Name | Seal,nozzle Stg 1 |
| FSC / FSG | 2840 / 28 — Gas Turbines and Jet Engines, Aircraft, Prime Moving; and Components |
| Manufacturer | Chromalloy Gas Turbine Llc Div Chromalloy Dallas |
| Status | ACTIVE |
| Criticality Code Justification | AGAV |
| Material | STEEL CORROSION RESISTING |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL D — Destroy Item |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | Y |
| Part Number | Manufacturer |
|---|---|
| 3901T83G01 | Chromalloy Gas Turbine Llc Div Chromalloy Dallas (USA) |
| 3901T83G01 | Ferrotherm, Llc Div Ferrotherm (USA) |
| 3901T83G01 | Metro Machine Works Inc (USA) |
| 3901T83G01 | Unison Engine Components Inc. (USA) |
| 3901T83G01 | Honeycomb Products Services, Llc Dba Honeycomb Products (USA) |
| Reference | Meaning |
|---|---|
| 3901T83G01 | 3/2 Design control — primary reference U.S. Government activity |
NSN 2840-01-018-0478 is a Seal,nozzle Stg 1, manufactured by Chromalloy Gas Turbine Llc Div Chromalloy Dallas, classified under FSC 2840, Gas Turbines and Jet Engines, Aircraft, Prime Moving; and Components. Status: active.
NSN 2840-01-018-0478 has 5 manufacturer part numbers on file: 3901T83G01 (Chromalloy Gas Turbine Llc Div Chromalloy Dallas), 3901T83G01 (Ferrotherm, Llc Div Ferrotherm), 3901T83G01 (Metro Machine Works Inc), 3901T83G01 (Unison Engine Components Inc.), 3901T83G01 (Honeycomb Products Services, Llc Dba Honeycomb Products).
Key specifications for 3901T83G01: Criticality Code Justification: AGAV; Overall Length: 1.130 INCHES MINIMUM AND 1.150 INCHES MAXIMUM IN; Special Features: 10.770 INCHES MINIMUM AND 10.772 INCHES MAXIMUM IN; End Item Identification: ENGINE,ACFT,TURBOFAN,MODEL NO. TF34-GE-100. 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 2840-01-018-0478 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.