The Fan,tubeaxial, cataloged under National Stock Number 4140-01-288-2946, 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 12 specifications, cited from the U.S. Government catalog. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 4140-01-288-2946 |
| Item Name | Fan,tubeaxial |
| FSC / FSG | 4140 / 41 — Fans, Air Circulators, and Blower Equipment |
| Status | ACTIVE |
| Mounting Facility Type and Quantity | 2 RING |
| Length | 1.730 INCHES NOMINAL IN |
| Voltage in Volts and Current Type | 24.0 DC OR 28.0 DC |
| Flow Direction | INWARD |
| Housing Inside Diameter | 3.562 INCHES NOMINAL IN |
| Drive Type | DIRECT |
| Style Designator | FIXED |
| Surface Treatment | ENAMEL OVERALL |
| Material | ALUMINUM ALLOY OVERALL |
| Prime Mover Type | ELECTRIC MOTOR |
| Rotation Direction for Which Designed | COUNTERCLOCKWISE |
| Electrical Connection Type | TERMINAL |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL B — Remove Demilitarization Key Points |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| C5155360-1 | 7/9 Vendor item drawing reference Signals Warfare Project Manager |
| PX3BT-24/28ECDC-N-757JH | 5/2 Secondary reference U.S. Government activity |
| 10065164 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
| 011097 | 3/2 Design control — primary reference U.S. Government activity |
NSN 4140-01-288-2946 is a Fan,tubeaxial, classified under FSC 4140, Fans, Air Circulators, and Blower Equipment. Status: active.
1 possible match (shared part number, not a government interchangeability claim): 5340-01-624-9457. Verify interchangeability with system specifications before substitution.
Key specifications for 4140-01-288-2946: Mounting Facility Type and Quantity: 2 RING; Length: 1.730 INCHES NOMINAL IN; Voltage in Volts and Current Type: 24.0 DC OR 28.0 DC; Flow Direction: INWARD. 12 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 4140-01-288-2946 has DEMIL Code B. 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.