The Fan,centrifugal, cataloged under National Stock Number 4140-01-297-9901, 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 21 specifications, cited from the U.S. Government catalog. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 4140-01-297-9901 |
| Item Name | Fan,centrifugal |
| FSC / FSG | 4140 / 41 — Fans, Air Circulators, and Blower Equipment |
| Status | ACTIVE |
| Outlet Location | BOTTOM |
| Mounting Facility Type and Quantity | 4 UNTHREADED HOLE(S) |
| Speed Adjustments | TWO SPEED |
| Phase | SINGLE |
| Shaft Bearing Type | SLEEVE |
| Frequency in Hertz | 50.0 AND 60.0 |
| Inclosure Type | GUARDED |
| Voltage in Volts and Current Type | 220.0 AC OR 230.0 AC |
| Drive Type | BELT |
| Prime Mover Power Rating | 9.0 WATTS AND 10.0 WATTS |
| Diameter | 2.812 INCHES NOMINAL IN |
| Ambient Temp at Full Rated Power | 25.0 CELSIUS AND 60.0 CELSIUS DEGC |
| Discharge Direction | HORIZONTAL |
| Operating Speed at Rated Capacity in RPM | 2700.0 AND 3150.0 |
| Material | PLASTIC POLYPROPYLENE BLADE |
| Prime Mover Type | ELECTRIC MOTOR |
| Rotation Direction for Which Designed | COUNTERCLOCKWISE |
| Prime Mover Drive Shaft Bearing Type | SLEEVE |
| Electrical Connection Type | WIRE LEAD |
| Static Pressure at Specified Air Flow Rate | ERR-060 |
| Air Flow Rate | 28.0 CUBIC FEET PER MINUTE MINIMUM AND 34.0 CUBIC FEET PER MINUTE MAXIMUM |
| 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 |
|---|---|
| SU3G1 | 3/2 Design control — primary reference U.S. Government activity |
| 028872 | 5/9 Secondary reference U.S. Government activity |
| 69596E | 5/9 Secondary reference I T T Components Group (standard Telephones & Cable) |
| SU3G1 | 5/9 Secondary reference I T T Components Group (standard Telephones & Cable) |
NSN 4140-01-297-9901 is a Fan,centrifugal, classified under FSC 4140, Fans, Air Circulators, and Blower Equipment. Status: active.
1 possible match (shared part number, not a government interchangeability claim): 6850-01-723-4923. Verify interchangeability with system specifications before substitution.
Key specifications for 4140-01-297-9901: Outlet Location: BOTTOM; Mounting Facility Type and Quantity: 4 UNTHREADED HOLE(S); Speed Adjustments: TWO SPEED; Phase: SINGLE. 21 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.