The Fan,centrifugal, cataloged under National Stock Number 4140-00-657-1532, 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 United Blower Co Inc Dba Custom Air Products. Government technical data includes 2 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 4140-00-657-1532 |
| Primary Part Number | H4140-657-1532 |
| Item Name | Fan,centrifugal |
| FSC / FSG | 4140 / 41 — Fans, Air Circulators, and Blower Equipment |
| Manufacturer | United Blower Co Inc Dba Custom Air Products |
| Status | ACTIVE |
| Voltage in Volts and Current Type | 110.0 AC |
| Prime Mover Type | ELECTRIC MOTOR |
| 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 |
|---|---|
| H4140-657-1532 PRIMARY | United Blower Co Inc Dba Custom Air Products (USA) |
| Reference | Meaning |
|---|---|
| 302-689475PC4 | 5/9 Secondary reference U.S. Government activity |
| U21 | 3/9 Design control — primary reference United Blower Co Inc Dba Custom Air Products |
NSN 4140-00-657-1532 is a Fan,centrifugal, manufactured by United Blower Co Inc Dba Custom Air Products, classified under FSC 4140, Fans, Air Circulators, and Blower Equipment. Status: active.
NSN 4140-00-657-1532 has 1 manufacturer part number on file: H4140-657-1532 (United Blower Co Inc Dba Custom Air Products).
Key specifications for H4140-657-1532: Voltage in Volts and Current Type: 110.0 AC; Prime Mover Type: ELECTRIC MOTOR. 2 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.