The Fan,centrifugal, cataloged under National Stock Number 4140-00-835-5906, 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 28 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through both NSN and commercial part number lookups. 6 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 4140-00-835-5906 |
| Primary Part Number | C7R8F-9A |
| 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 | 4 THREADED HOLE(S) |
| Speed Adjustments | SINGLE SPEED |
| Phase | THREE |
| Inclosure Type | FULLY INCLOSED |
| Outlet Inside Height | 2.500 INCHES NOMINAL IN |
| Length | 6.250 INCHES NOMINAL IN |
| Voltage in Volts and Current Type | 115.0 AC |
| Drive Type | DIRECT |
| Style Designator | FIXED, DUAL IMPELLER, RECTANGULAR OUTLET |
| Ambient Temp at Full Rated Power | 72.0 CELSIUS DEGC |
| Discharge Direction | VERTICAL UP |
| Outlet Inside Width | 2.720 INCHES NOMINAL IN |
| Height | 6.880 INCHES NOMINAL IN |
| Stage Quantity | 1 |
| Operating Speed at Rated Capacity in RPM | 3500.0 |
| Surface Treatment | CHROMATE ZINC HOUSING |
| Surface Treatment | DICHROMATE BLADE |
| Environmental Protection | HUMIDITY PROOF AND SHOCK PROOF AND VIBRATION PROOF |
| Width | 9.430 INCHES NOMINAL IN |
| Material | STEEL HOUSING |
| Material | ZINC ALLOY BLADE |
| Prime Mover Type | ELECTRIC MOTOR |
| Rotation Direction for Which Designed | CLOCKWISE |
| Prime Mover Drive Shaft Bearing Type | BALL |
| Electrical Connection Type | WIRE LEAD |
| Static Pressure at Specified Air Flow Rate | ERR-060 |
| Air Flow Rate | 375.0 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 |
|---|---|
| C7R8F-9A PRIMARY | Ashland Electric Products Inc (USA) |
| Reference | Meaning |
|---|---|
| 7216326-00 | 5/9 Secondary reference U.S. Government activity |
| 033192 | 5/9 Secondary reference U.S. Government activity |
| 4140PL0902946 | 6/9 Informative reference only Jednolity Indeks Materialowy - Uniform Material Index |
| 027877 | 3/2 Design control — primary reference U.S. Government activity |
| 7903085-02 | 1/2 Source control — Government-approved source U.S. Government activity |
| DRXP-PD3503CW-277WF | 5/2 Secondary reference U.S. Government activity |
NSN 4140-00-835-5906 is a Fan,centrifugal, manufactured by Ashland Electric Products Inc, classified under FSC 4140, Fans, Air Circulators, and Blower Equipment. Status: active.
NSN 4140-00-835-5906 has 1 manufacturer part number on file: C7R8F-9A (Ashland Electric Products Inc).
1 possible match (shared part number, not a government interchangeability claim): 3020-01-678-5471. Verify interchangeability with system specifications before substitution.
Key specifications for C7R8F-9A: Outlet Location: TOP; Mounting Facility Type and Quantity: 4 THREADED HOLE(S); Speed Adjustments: SINGLE SPEED; Phase: THREE. 28 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.