The Fan,centrifugal, cataloged under National Stock Number 4140-01-344-4674, 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 Rotron Incorporated. Government technical data includes 25 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4140-01-344-4674 |
| Primary Part Number | 1164-11 |
| Item Name | Fan,centrifugal |
| FSC / FSG | 4140 / 41 — Fans, Air Circulators, and Blower Equipment |
| Manufacturer | Rotron Incorporated |
| Status | ACTIVE |
| Outlet Location | TOP |
| Mounting Facility Type and Quantity | 2 CLAMP RING(S) |
| Speed Adjustments | SINGLE SPEED |
| Phase | THREE |
| Frequency in Hertz | 50.0 |
| Inclosure Type | FULLY INCLOSED |
| Outlet Inside Height | 3.190 INCHES NOMINAL IN |
| Length | 8.720 INCHES NOMINAL IN |
| Voltage in Volts and Current Type | 220.0 AC |
| Drive Type | DIRECT |
| Prime Mover Power Rating | 339.0 WATTS |
| Style Designator | FIXED, DUAL IMPELLER, RECTANGULAR OUTLET |
| Discharge Direction | VERTICAL UP |
| Outlet Inside Width | 4.060 INCHES NOMINAL IN |
| Height | 7.810 INCHES NOMINAL IN |
| Operating Speed at Rated Capacity in RPM | 2920.0 |
| Surface Treatment | ZINC BLADE |
| Surface Treatment | ENAMEL HOUSING |
| Width | 16.270 INCHES NOMINAL IN |
| Material | STEEL OVERALL |
| Prime Mover Type | ELECTRIC MOTOR |
| Rotation Direction for Which Designed | CLOCKWISE OR COUNTERCLOCKWISE |
| Prime Mover Drive Shaft Bearing Type | BALL |
| Static Pressure at Specified Air Flow Rate | ERR-060 |
| Air Flow Rate | 720.0 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 |
|---|---|
| 1164-11 PRIMARY | Rotron Incorporated (USA) |
| Reference | Meaning |
|---|---|
| BRPD-AD4504 | 5/1 Secondary reference U.S. Government activity |
NSN 4140-01-344-4674 is a Fan,centrifugal, manufactured by Rotron Incorporated, classified under FSC 4140, Fans, Air Circulators, and Blower Equipment. Status: active.
NSN 4140-01-344-4674 has 1 manufacturer part number on file: 1164-11 (Rotron Incorporated).
Key specifications for 1164-11: Outlet Location: TOP; Mounting Facility Type and Quantity: 2 CLAMP RING(S); Speed Adjustments: SINGLE SPEED; Phase: THREE. 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.