The Fan,tubeaxial, cataloged under National Stock Number 4140-01-521-2289, 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 8 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4140-01-521-2289 |
| Primary Part Number | 7325603 FN78 |
| Item Name | Fan,tubeaxial |
| FSC / FSG | 4140 / 41 — Fans, Air Circulators, and Blower Equipment |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Voltage in Volts and Current Type | 28.0 DC |
| Housing Inside Diameter | 1.990 INCHES NOMINAL IN |
| Drive Type | DIRECT |
| Style Designator | FIXED |
| Operating Speed at Rated Capacity in RPM | 20000.0 |
| Prime Mover Type | ELECTRIC MOTOR |
| Rotation Direction for Which Designed | COUNTERCLOCKWISE |
| Electrical Connection Type | WIRE LEAD |
| 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 |
|---|---|
| 7325603 FN78 | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| C011856 | 5/2 Secondary reference U.S. Government activity |
| 00001109 | 5/2 Secondary reference U.S. Government activity |
| 011856000 | 3/2 Design control — primary reference U.S. Government activity |
| 011856 | 5/9 Secondary reference U.S. Government activity |
NSN 4140-01-521-2289 is a Fan,tubeaxial, manufactured by Naval Sea Systems Command, classified under FSC 4140, Fans, Air Circulators, and Blower Equipment. Status: active.
NSN 4140-01-521-2289 has 1 manufacturer part number on file: 7325603 FN78 (Naval Sea Systems Command).
Key specifications for 7325603 FN78: Voltage in Volts and Current Type: 28.0 DC; Housing Inside Diameter: 1.990 INCHES NOMINAL IN; Drive Type: DIRECT; Style Designator: FIXED. 8 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.