The Fan,centrifugal, cataloged under National Stock Number 4140-00-725-4012, 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 Us Army Aviation and Missile Command. Government technical data includes 24 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through both NSN and commercial part number lookups. 6 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 4140-00-725-4012 |
| Primary Part Number | 9172174 |
| Item Name | Fan,centrifugal |
| FSC / FSG | 4140 / 41 — Fans, Air Circulators, and Blower Equipment |
| Manufacturer | Us Army Aviation and Missile Command |
| Status | ACTIVE |
| Mounting Facility Type and Quantity | 2 FEET AND 4 THREADED HOLE(S) FT |
| Phase | THREE |
| Inclosure Type | FULLY INCLOSED |
| Outlet Inside Height | 4.312 INCHES NOMINAL IN |
| Length | 10.840 INCHES NOMINAL IN |
| Voltage in Volts and Current Type | 416.0 AC |
| Drive Type | DIRECT |
| Style Designator | FIXED, RECTANGULAR OUTLETS |
| Ambient Temp at Full Rated Power | -32.0 CELSIUS AND 71.0 CELSIUS DEGC |
| Discharge Direction | ANGULAR UP |
| Outlet Inside Width | 3.656 INCHES NOMINAL IN |
| Height | 11.780 INCHES NOMINAL IN |
| Stage Quantity | 1 |
| Operating Speed at Rated Capacity in RPM | 3650.0 |
| Surface Treatment | ENAMEL OVERALL |
| Environmental Protection | HUMIDITY PROOF AND SHOCK PROOF AND VIBRATION PROOF AND SALT SPRAY RESISTANT |
| Width | 12.400 INCHES NOMINAL IN |
| Material | STEEL OVERALL |
| 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 | 720.0 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 |
| Part Number | Manufacturer |
|---|---|
| 9172174 | Us Army Aviation and Missile Command (USA) |
| Reference | Meaning |
|---|---|
| 023570 | 5/9 Secondary reference U.S. Government activity |
| ARDRN-PS606CW-203JL-1-30 OCLOCK | 5/9 Secondary reference U.S. Government activity |
| 023570000 | 5/2 Secondary reference U.S. Government activity |
| B63M10R6 | 3/9 Design control — primary reference Eastern Air Devices Inc Dba Ead Motors |
| A0-22141 | 5/9 Secondary reference U.S. Government activity |
| ARDRN-PS606CW-203JF-1-30 OCLOCK | 5/2 Secondary reference U.S. Government activity |
NSN 4140-00-725-4012 is a Fan,centrifugal, manufactured by Us Army Aviation and Missile Command, classified under FSC 4140, Fans, Air Circulators, and Blower Equipment. Status: active.
NSN 4140-00-725-4012 has 1 manufacturer part number on file: 9172174 (Us Army Aviation and Missile Command).
1 possible match (shared part number, not a government interchangeability claim): 4510-01-079-8535. Verify interchangeability with system specifications before substitution.
Key specifications for 9172174: Mounting Facility Type and Quantity: 2 FEET AND 4 THREADED HOLE(S) FT; Phase: THREE; Inclosure Type: FULLY INCLOSED; Outlet Inside Height: 4.312 INCHES NOMINAL IN. 24 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.