The Fan,circulating, cataloged under National Stock Number 4140-00-404-6920, 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21 specifications, cited from the U.S. Government catalog. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 4140-00-404-6920 |
| Item Name | Fan,circulating |
| FSC / FSG | 4140 / 41 — Fans, Air Circulators, and Blower Equipment |
| Status | ACTIVE |
| Mounting Facility Type and Quantity | 1 FLANGE AND 3 UNTHREADED HOLE(S) |
| Speed Adjustments | SINGLE SPEED |
| Phase | SINGLE |
| Frequency in Hertz | 60.0 AND 400.0 |
| Inclosure Type | FULLY INCLOSED |
| Length | 4.440 INCHES NOMINAL IN |
| Voltage in Volts and Current Type | 115.0 AC |
| Flow Direction | INWARD |
| Housing Inside Diameter | 4.812 INCHES NOMINAL IN |
| Drive Type | DIRECT |
| Prime Mover Power Rating | 55.0 WATTS |
| Style Designator | FIXED |
| Operating Speed at Rated Capacity in RPM | 4300.0 |
| Surface Treatment | ANODIZE BLADE |
| Material | ALUMINUM BLADE |
| Prime Mover Type | ELECTRIC MOTOR |
| Rotation Direction for Which Designed | CLOCKWISE |
| Prime Mover Drive Shaft Bearing Type | BALL |
| Electrical Connection Type | TERMINAL BLOCK |
| Static Pressure at Specified Air Flow Rate | ERR-060 |
| Air Flow Rate | 145.0 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 |
|---|---|
| 3120025 | 5/9 Secondary reference Itt Telecom Products Corp Network Systems Div |
| DFE-KRS-4501-R-435AF | 5/1 Secondary reference U.S. Government activity |
| A0A0854 | 5/9 Secondary reference U.S. Government activity |
| 020512 | 3/2 Design control — primary reference U.S. Government activity |
NSN 4140-00-404-6920 is a Fan,circulating, classified under FSC 4140, Fans, Air Circulators, and Blower Equipment. Status: active.
1 possible match (shared part number, not a government interchangeability claim): 5340-01-581-5820. Verify interchangeability with system specifications before substitution.
Key specifications for 4140-00-404-6920: Mounting Facility Type and Quantity: 1 FLANGE AND 3 UNTHREADED HOLE(S); Speed Adjustments: SINGLE SPEED; Phase: SINGLE; Frequency in Hertz: 60.0 AND 400.0. 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.