The Boss,fan Inlet Case, cataloged under National Stock Number 2840-00-066-9901, 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 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 2840-00-066-9901 |
| Primary Part Number | 478785 |
| Item Name | Boss,fan Inlet Case |
| 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 |
| Overall Diameter | 2.240 INCHES MINIMUM AND 2.260 INCHES MAXIMUM IN |
| Criticality Code Justification | ADAV AND ABMK AND ABHP AND AGAV |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | Y |
| Part Number | Manufacturer |
|---|---|
| 478785 PRIMARY | Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney (USA) |
NSN 2840-00-066-9901 is a Boss,fan Inlet Case, 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 2840-00-066-9901 has 1 manufacturer part number on file: 478785 (Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney).
Key specifications for 478785: Overall Diameter: 2.240 INCHES MINIMUM AND 2.260 INCHES MAXIMUM IN; Criticality Code Justification: ADAV AND ABMK AND ABHP AND AGAV; Overall Length: 0.430 INCHES MINIMUM AND 0.450 INCHES MAXIMUM IN; Overall Width: 0.110 INCHES MINIMUM AND 0.120 INCHES MAXIMUM 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 2840-00-066-9901 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.