The Fan,centrifugal, cataloged under National Stock Number 4140-00-488-5540, is classified within Federal Supply Class 4140 (Fans, Air Circulators, and Blower Equipment) of the Refrigeration, AC, and Air Circulating Equipment group. The manufacturer of record is Lockheed Martin Librascope Corporation. Government technical data includes 22 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4140-00-488-5540 |
| Primary Part Number | L200021922 |
| Item Name | Fan,centrifugal |
| FSC / FSG | 4140 / 41 — Fans, Air Circulators, and Blower Equipment |
| Manufacturer | Lockheed Martin Librascope Corporation |
| Status | ACTIVE |
| Outlet Location | BOTTOM |
| Mounting Facility Type and Quantity | 1 THREADED HOLE(S) |
| Phase | THREE |
| Outlet Inside Height | 2.650 INCHES NOMINAL IN |
| Length | 6.310 INCHES NOMINAL IN |
| Voltage in Volts and Current Type | 115.0 AC |
| Drive Type | DIRECT |
| Quantity | 2 |
| Style Designator | FIXED, DUAL IMPELLER, RECTANGULAR OUTLET |
| Features Provided | SAFETY IMPELLER GUARD |
| Ambient Temp at Full Rated Power | 0.0 CELSIUS AND 70.0 CELSIUS DEGC |
| Discharge Direction | HORIZONTAL |
| Outlet Inside Width | 1.750 INCHES NOMINAL IN |
| Height | 6.930 INCHES NOMINAL IN |
| Stage Quantity | 1 |
| Operating Speed at Rated Capacity in RPM | 3750.0 |
| Width | 7.310 INCHES NOMINAL IN |
| Prime Mover Type | ELECTRIC MOTOR |
| Rotation Direction for Which Designed | CLOCKWISE |
| Electrical Connection Type | WIRE LEAD |
| Static Pressure at Specified Air Flow Rate | ERR-060 |
| Air Flow Rate | 160.0 CUBIC FEET PER MINUTE NOMINAL |
| 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 |
|---|---|
| L200021922 PRIMARY | Lockheed Martin Librascope Corporation (USA) |
| Reference | Meaning |
|---|---|
| 2864461 | 5/9 Secondary reference Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier |
NSN 4140-00-488-5540 is a Fan,centrifugal, manufactured by Lockheed Martin Librascope Corporation, classified under FSC 4140, Fans, Air Circulators, and Blower Equipment. Status: active.
NSN 4140-00-488-5540 has 1 manufacturer part number on file: L200021922 (Lockheed Martin Librascope Corporation).
Key specifications for L200021922: Outlet Location: BOTTOM; Mounting Facility Type and Quantity: 1 THREADED HOLE(S); Phase: THREE; Outlet Inside Height: 2.650 INCHES NOMINAL IN. 22 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.