The Fan,centrifugal, cataloged under National Stock Number 4140-01-048-4424, 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 Raytheon Company Dba Raytheon Co. Government technical data includes 25 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 4140-01-048-4424 |
| Primary Part Number | 554810-1 |
| Item Name | Fan,centrifugal |
| FSC / FSG | 4140 / 41 — Fans, Air Circulators, and Blower Equipment |
| Manufacturer | Raytheon Company Dba Raytheon Co |
| Status | ACTIVE |
| Outlet Location | TOP |
| Mounting Facility Type and Quantity | 1 FLANGE AND 3 THREADED HOLE(S) |
| Speed Adjustments | SINGLE SPEED |
| Phase | SINGLE |
| Inclosure Type | FULLY INCLOSED |
| Outlet Inside Height | 1.250 INCHES NOMINAL IN |
| Length | 5.000 INCHES NOMINAL IN |
| Voltage in Volts and Current Type | 115.0 AC |
| Drive Type | DIRECT |
| Prime Mover Power Rating | 0.024 HORSEPOWER |
| Style Designator | FIXED, DUAL IMPELLER, RECTANGULAR OUTLET |
| Discharge Direction | ANGULAR UP |
| Outlet Inside Width | 0.750 INCHES NOMINAL IN |
| Height | 5.360 INCHES NOMINAL IN |
| Operating Speed at Rated Capacity in RPM | 3600.0 |
| Surface Treatment | ENAMEL OVERALL |
| Width | 4.120 INCHES NOMINAL IN |
| Material | STEEL HOUSING |
| 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 | 28.1 CUBIC FEET PER MINUTE MINIMUM AND 29.5 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 |
| Part Number | Manufacturer |
|---|---|
| 554810-1 | Raytheon Company (USA) |
| 554810-1 PRIMARY | Raytheon Company Dba Raytheon Co (USA) |
| Reference | Meaning |
|---|---|
| A074785 | C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity |
| 025631 | 3/2 Design control — primary reference U.S. Government activity |
| 554810-1 | 5/9 Secondary reference Raytheon Company Div Corp |
| A084785 | 5/9 Secondary reference U.S. Government activity |
| RRFP-KD3501CW-110AF | 5/2 Secondary reference U.S. Government activity |
NSN 4140-01-048-4424 is a Fan,centrifugal, manufactured by Raytheon Company Dba Raytheon Co, classified under FSC 4140, Fans, Air Circulators, and Blower Equipment. Status: active.
NSN 4140-01-048-4424 has 2 manufacturer part numbers on file: 554810-1 (Raytheon Company), 554810-1 (Raytheon Company Dba Raytheon Co).
1 possible match (shared part number, not a government interchangeability claim): 5340-01-379-0713. Verify interchangeability with system specifications before substitution.
Key specifications for 554810-1: Outlet Location: TOP; Mounting Facility Type and Quantity: 1 FLANGE AND 3 THREADED HOLE(S); Speed Adjustments: SINGLE SPEED; Phase: SINGLE. 25 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.