The Fan,centrifugal, cataloged under National Stock Number 4140-00-009-0233, 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 Naval Sea Systems Command. Government technical data includes 27 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through both NSN and commercial part number lookups. 11 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4140-00-009-0233 |
| Primary Part Number | 2994921 |
| Item Name | Fan,centrifugal |
| FSC / FSG | 4140 / 41 — Fans, Air Circulators, and Blower Equipment |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Outlet Location | TOP |
| Mounting Facility Type and Quantity | 1 FLANGE AND 4 UNTHREADED HOLE(S) |
| Speed Adjustments | SINGLE SPEED |
| Phase | THREE |
| Frequency in Hertz | 400.0 |
| Inclosure Type | FULLY INCLOSED |
| Outlet Inside Height | 1.250 INCHES NOMINAL IN |
| Length | 2.641 INCHES NOMINAL IN |
| Voltage in Volts and Current Type | 115.0 AC |
| Drive Type | DIRECT |
| Prime Mover Power Rating | 8.5 WATTS |
| Style Designator | FIXED, RECTANGULAR OUTLETS |
| Features Provided | SAFETY IMPELLER GUARD |
| Ambient Temp at Full Rated Power | -20.0 CELSIUS AND 75.0 CELSIUS DEGC |
| Discharge Direction | VERTICAL UP |
| Outlet Inside Width | 1.312 INCHES NOMINAL IN |
| Height | 3.342 INCHES NOMINAL IN |
| Operating Speed at Rated Capacity in RPM | 6700.0 |
| Surface Treatment | ZINC BLADE |
| Surface Treatment | ENAMEL HOUSING |
| Width | 3.499 INCHES NOMINAL IN |
| Material | STEEL OVERALL |
| Prime Mover Type | ELECTRIC MOTOR |
| Rotation Direction for Which Designed | COUNTERCLOCKWISE |
| Prime Mover Drive Shaft Bearing Type | BALL |
| Electrical Connection Type | TERMINAL BLOCK |
| Air Flow Rate | 20.0 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 |
|---|---|
| 2994921 PRIMARY | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| 2994921 | C/1 Advisory reference — outside the item-of-supply concept Zf Industrieantriebe Witten Gmbh |
| B15J3L9 | 5/9 Secondary reference Eastern Air Devices Inc Dba Ead Motors |
| 9126C7015 | 5/2 Secondary reference U.S. Government activity |
| 2994921 | 3/9 Design control — primary reference Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier |
| DRFS-MS1504CCW-910WS | 5/9 Secondary reference U.S. Government activity |
| A0-62642 | 5/2 Secondary reference U.S. Government activity |
| 023122 | 5/2 Secondary reference U.S. Government activity |
| 9126C7015 | 5/9 Secondary reference U.S. Government activity |
| A062642 | C/1 Advisory reference — outside the item-of-supply concept Zf Industrieantriebe Witten Gmbh |
| DRFS-MS1504CCW-910WF | 5/2 Secondary reference U.S. Government activity |
| 4140PL1339569 | 6/9 Informative reference only Jednolity Indeks Materialowy - Uniform Material Index |
NSN 4140-00-009-0233 is a Fan,centrifugal, manufactured by Naval Sea Systems Command, classified under FSC 4140, Fans, Air Circulators, and Blower Equipment. Status: active.
NSN 4140-00-009-0233 has 1 manufacturer part number on file: 2994921 (Naval Sea Systems Command).
2 possible matches (shared part number, not a government interchangeability claim): 5910-00-474-5391, 5306-01-380-9233. Verify interchangeability with system specifications before substitution.
Key specifications for 2994921: Outlet Location: TOP; Mounting Facility Type and Quantity: 1 FLANGE AND 4 UNTHREADED HOLE(S); Speed Adjustments: SINGLE SPEED; Phase: THREE. 27 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.