The Guide,augmentor, cataloged under National Stock Number 2840-01-159-0185, 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 4 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 2840-01-159-0185 |
| Primary Part Number | 4057748 |
| Item Name | Guide,augmentor |
| 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 |
| Material | NICKEL ALLOY |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 4057748 PRIMARY | Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney (USA) |
| 4057748 | Rmc Engineering and Manufacturing Llc Dba Rmc Engineering & Manufacturing Llc (USA) |
| 4057748 | Rtx Corporation Div Pratt & Whitney (USA) |
| 4057748 | Soldream Inc (USA) |
| Reference | Meaning |
|---|---|
| 2840PL0664274 | 6/9 Informative reference only Jednolity Indeks Materialowy - Uniform Material Index |
NSN 2840-01-159-0185 is a Guide,augmentor, 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 2840-01-159-0185 has 4 manufacturer part numbers on file: 4057748 (Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney), 4057748 (Rmc Engineering and Manufacturing Llc Dba Rmc Engineering & Manufacturing Llc), 4057748 (Rtx Corporation Div Pratt & Whitney), 4057748 (Soldream Inc).
1 possible match (shared part number, not a government interchangeability claim): 5331-01-572-4505. Verify interchangeability with system specifications before substitution.
Key specifications for 4057748: Criticality Code Justification: FEAT; Special Features: F100-PW-100/200/220 ACFT ENGINES; Part Name Assigned by Controlling Agency: GUIDE-AUGMENTOR DIVERGENT NOZZLE SEGMENT SEAL; Material: NICKEL ALLOY. 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 2840-01-159-0185 has DEMIL Code Q. 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.