The Fan,centrifugal, cataloged under National Stock Number 4140-01-357-1342, 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 25 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4140-01-357-1342 |
| Primary Part Number | BT4620B2-1 |
| Item Name | Fan,centrifugal |
| FSC / FSG | 4140 / 41 — Fans, Air Circulators, and Blower Equipment |
| Manufacturer | Curtiss-Wright Controls Integrated Sensing, Inc. |
| Status | ACTIVE |
| Outlet Location | TOP |
| Mounting Facility Type and Quantity | 1 FLANGE AND 4 UNTHREADED HOLE(S) |
| Speed Adjustments | SINGLE SPEED |
| Phase | THREE |
| Frequency in Hertz | 60.0 |
| Inclosure Type | FULLY INCLOSED |
| Outlet Inside Height | 4.370 INCHES NOMINAL IN |
| Length | 9.500 INCHES NOMINAL IN |
| Voltage in Volts and Current Type | 208.0 AC |
| Drive Type | DIRECT |
| Prime Mover Power Rating | 850.0 WATTS |
| Style Designator | FIXED, RECTANGULAR OUTLETS |
| Ambient Temp at Full Rated Power | -30.0 CELSIUS AND 55.0 CELSIUS DEGC |
| Discharge Direction | HORIZONTAL |
| Outlet Inside Width | 4.500 INCHES NOMINAL IN |
| Height | 10.500 INCHES NOMINAL IN |
| Operating Speed at Rated Capacity in RPM | 3300.0 |
| Width | 12.000 INCHES NOMINAL IN |
| Material | STEEL HOUSING |
| 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 | 673.0 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 |
|---|---|
| BT4620B2-1 PRIMARY | Curtiss-Wright Controls Integrated Sensing, Inc. (USA) |
| C9Z56Q-1C PRIMARY | Ashland Electric Products Inc (USA) |
| Reference | Meaning |
|---|---|
| SC4140-0021-2 | 7/9 Vendor item drawing reference Drs Icas, Llc |
NSN 4140-01-357-1342 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 4140-01-357-1342 has 2 manufacturer part numbers on file: BT4620B2-1 (Curtiss-Wright Controls Integrated Sensing, Inc.), C9Z56Q-1C (Ashland Electric Products Inc).
Key specifications for BT4620B2-1: Outlet Location: TOP; Mounting Facility Type and Quantity: 1 FLANGE AND 4 UNTHREADED HOLE(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.