The Fan,centrifugal, cataloged under National Stock Number 4140-01-055-2250, 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 Curtiss-Wright Controls Integrated Sensing, Inc.. Government technical data includes 12 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4140-01-055-2250 |
| Primary Part Number | BC3835B-4 |
| Item Name | Fan,centrifugal |
| FSC / FSG | 4140 / 41 — Fans, Air Circulators, and Blower Equipment |
| Manufacturer | Curtiss-Wright Controls Integrated Sensing, Inc. |
| Status | ACTIVE |
| Outlet Inside Height | 1.420 INCHES NOMINAL IN |
| Length | 7.220 INCHES NOMINAL IN |
| Drive Type | DIRECT |
| Quantity | 1 |
| Style Designator | FIXED, RECTANGULAR OUTLETS |
| Discharge Direction | VERTICAL UP |
| Outlet Inside Width | 4.190 INCHES NOMINAL IN |
| Height | 7.780 INCHES NOMINAL IN |
| Width | 10.020 INCHES NOMINAL IN |
| Rotation Direction for Which Designed | CLOCKWISE |
| Static Pressure at Specified Air Flow Rate | ERR-060 |
| Air Flow Rate | 125.0 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 | N |
| Part Number | Manufacturer |
|---|---|
| BC3835B-4 | Curtiss-Wright Controls Integrated Sensing, Inc. (USA) |
| Reference | Meaning |
|---|---|
| 027971 | 3/2 Design control — primary reference U.S. Government activity |
| SM-A-775697 | 7/2 Vendor item drawing reference U.S. Government activity |
NSN 4140-01-055-2250 is a Fan,centrifugal, manufactured by Curtiss-Wright Controls Integrated Sensing, Inc., classified under FSC 4140, Fans, Air Circulators, and Blower Equipment. Status: active.
NSN 4140-01-055-2250 has 1 manufacturer part number on file: BC3835B-4 (Curtiss-Wright Controls Integrated Sensing, Inc.).
Key specifications for BC3835B-4: Outlet Inside Height: 1.420 INCHES NOMINAL IN; Length: 7.220 INCHES NOMINAL IN; Drive Type: DIRECT; Quantity: 1. 12 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.