The Shroud Segment,turbine,aircraft, cataloged under National Stock Number 2840-00-345-3655, 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 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 | 2840-00-345-3655 |
| Primary Part Number | 4040644 |
| Item Name | Shroud Segment,turbine,aircraft |
| 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 | ABMZ AND ABHP AND AGAV |
| Diameter | 16.918 INCHES MINIMUM AND 16.922 INCHES MAXIMUM IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL D — Destroy Item |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | Y |
NSN 2840-00-345-3655 is a Shroud Segment,turbine,aircraft, 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 2840-00-345-3655 has 2 manufacturer part numbers on file: 4040644 (Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney), 4040644 (Chromalloy San Diego Corp).
1 possible match (shared part number, not a government interchangeability claim): 2530-01-673-1114. Verify interchangeability with system specifications before substitution.
Key specifications for 4040644: Criticality Code Justification: ABMZ AND ABHP AND AGAV; Diameter: 16.918 INCHES MINIMUM AND 16.922 INCHES MAXIMUM IN; Overall Length: 1.113 INCHES MINIMUM AND 1.117 INCHES MAXIMUM IN; End Item Identification: ENGINE,TURBOFAN,MODEL F100PW100. 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 2840-00-345-3655 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.