The Fan,centrifugal, cataloged under National Stock Number 4140-01-382-3864, 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 7 specifications, cited from the U.S. Government catalog. The record lists 3 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4140-01-382-3864 |
| Primary Part Number | BT4620B2 |
| Item Name | Fan,centrifugal |
| FSC / FSG | 4140 / 41 — Fans, Air Circulators, and Blower Equipment |
| Manufacturer | Curtiss-Wright Controls Integrated Sensing, Inc. |
| Status | ACTIVE |
| Phase | THREE |
| Frequency in Hertz | 60.0 |
| Length | 9.500 INCHES NOMINAL IN |
| Style Designator | PORTABLE |
| Height | 10.500 INCHES NOMINAL IN |
| Width | 12.000 INCHES NOMINAL IN |
| Rotation Direction for Which Designed | CLOCKWISE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
NSN 4140-01-382-3864 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 4140-01-382-3864 has 3 manufacturer part numbers on file: BT4620B2 (Curtiss-Wright Controls Integrated Sensing, Inc.), 1777-02 (Rotron Incorporated), C9Z56Q-2C (Ashland Electric Products Inc).
2 possible matches (shared part number, not a government interchangeability claim): 4320-01-412-2684, 5920-01-633-4743. Verify interchangeability with system specifications before substitution.
Key specifications for BT4620B2: Phase: THREE; Frequency in Hertz: 60.0; Length: 9.500 INCHES NOMINAL IN; Style Designator: PORTABLE. 7 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.