The Fan,centrifugal, cataloged under National Stock Number 4140-01-203-7635, 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 Ashland Electric Products Inc. Government technical data includes 27 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through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4140-01-203-7635 |
| Primary Part Number | C25S3H-1 |
| Item Name | Fan,centrifugal |
| FSC / FSG | 4140 / 41 — Fans, Air Circulators, and Blower Equipment |
| Manufacturer | Ashland Electric Products Inc |
| Status | ACTIVE |
| Outlet Location | TOP |
| Mounting Facility Type and Quantity | 2 THREADED HOLE(S) |
| Speed Adjustments | SINGLE SPEED |
| Phase | THREE |
| Inclosure Type | FULLY INCLOSED |
| Outlet Inside Height | 1.500 INCHES NOMINAL IN |
| Length | 3.660 INCHES NOMINAL IN |
| Voltage in Volts and Current Type | 200.0 AC |
| Drive Type | DIRECT |
| Prime Mover Power Rating | 50.000 WATTS |
| Style Designator | FIXED, DUAL IMPELLER, RECTANGULAR OUTLET |
| Ambient Temp at Full Rated Power | -54.0 CELSIUS AND 50.0 CELSIUS DEGC |
| Discharge Direction | VERTICAL UP |
| Outlet Inside Width | 1.620 INCHES NOMINAL IN |
| Height | 3.880 INCHES NOMINAL IN |
| Operating Speed at Rated Capacity in RPM | 6800.0 |
| Surface Treatment | ZINC BLADE |
| Surface Treatment | ENAMEL HOUSING |
| Environmental Protection | MOISTURE RESISTANT AND SALT SPRAY RESISTANT AND SHOCK PROOF AND VIBRATION PROOF |
| Width | 5.490 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 | CONNECTOR |
| Static Pressure at Specified Air Flow Rate | ERR-060 |
| Air Flow Rate | 85.0 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 |
|---|---|
| C25S3H-1 | Ashland Electric Products Inc (USA) |
| 77C724120P1 | Serco Limited (GBR) |
| Reference | Meaning |
|---|---|
| DRPP-MD202CCW-152WF | 5/1 Secondary reference U.S. Government activity |
| 033923 | 3/2 Design control — primary reference U.S. Government activity |
| 77C719389-1 | 5/9 Secondary reference Lockheed Martin Corporation Div Rms |
| 77C724120P1 | 7/2 Vendor item drawing reference Lockheed Martin Corporation Div Rms |
| C5S2H-3 | 5/9 Secondary reference Ashland Electric Products Inc |
NSN 4140-01-203-7635 is a Fan,centrifugal, manufactured by Ashland Electric Products Inc, classified under FSC 4140, Fans, Air Circulators, and Blower Equipment. Status: active.
NSN 4140-01-203-7635 has 2 manufacturer part numbers on file: C25S3H-1 (Ashland Electric Products Inc), 77C724120P1 (Serco Limited).
Key specifications for C25S3H-1: Outlet Location: TOP; Mounting Facility Type and Quantity: 2 THREADED 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.