The Fan,centrifugal, cataloged under National Stock Number 4140-00-004-0540, is classified within Federal Supply Class 4140 (Fans, Air Circulators, and Blower Equipment) of the Refrigeration, AC, and Air Circulating Equipment group. Government technical data includes 26 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4140-00-004-0540 |
| Item Name | Fan,centrifugal |
| FSC / FSG | 4140 / 41 — Fans, Air Circulators, and Blower Equipment |
| Status | ACTIVE |
| Outlet Location | TOP |
| Speed Adjustments | SINGLE SPEED |
| Phase | SINGLE |
| Inclosure Type | PARTIALLY INCLOSED |
| Outlet Inside Height | 4.125 INCHES NOMINAL IN |
| Length | 6.560 INCHES MINIMUM AND 6.680 INCHES MAXIMUM IN |
| Voltage in Volts and Current Type | 115.0 AC |
| Drive Type | DIRECT |
| Quantity | 1 |
| Style Designator | FIXED, RECTANGULAR OUTLETS |
| Diameter | 5.485 INCHES MINIMUM AND 5.515 INCHES MAXIMUM IN |
| Features Provided | NONSPARKING |
| Ambient Temp at Full Rated Power | -10.0 CELSIUS AND 50.0 CELSIUS DEGC |
| Discharge Direction | VERTICAL UP |
| Outlet Inside Width | 1.120 INCHES MINIMUM AND 1.560 INCHES MAXIMUM IN |
| Height | 5.820 INCHES MINIMUM AND 5.880 INCHES MAXIMUM IN |
| Operating Speed at Rated Capacity in RPM | 3100.0 |
| Surface Treatment | ANODIZE HOUSING INSIDE |
| Surface Treatment | ANODIZE HOUSING OUTSIDE |
| Width | 6.390 INCHES MINIMUM AND 6.810 INCHES MAXIMUM IN |
| Material | ALUMINUM HOUSING |
| Prime Mover Type | ELECTRIC MOTOR |
| Rotation Direction for Which Designed | COUNTERCLOCKWISE |
| Prime Mover Drive Shaft Bearing Type | BALL |
| Electrical Connection Type | WIRE LEAD |
| Air Flow Rate | 210.0 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 |
| Reference | Meaning |
|---|---|
| 7903447-00 | 5/2 Secondary reference U.S. Government activity |
| A0-74588 | 3/2 Design control — primary reference U.S. Government activity |
NSN 4140-00-004-0540 is a Fan,centrifugal, classified under FSC 4140, Fans, Air Circulators, and Blower Equipment. Status: active.
Key specifications for 4140-00-004-0540: Outlet Location: TOP; Speed Adjustments: SINGLE SPEED; Phase: SINGLE; Inclosure Type: PARTIALLY INCLOSED. 26 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.