The Fan,centrifugal, cataloged under National Stock Number 4140-01-391-1791, 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 W.w. Grainger, Inc. Div Government Sales Division. Government technical data includes 10 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4140-01-391-1791 |
| Primary Part Number | 4C666 |
| Item Name | Fan,centrifugal |
| FSC / FSG | 4140 / 41 — Fans, Air Circulators, and Blower Equipment |
| Manufacturer | W.w. Grainger, Inc. Div Government Sales Division |
| Status | ACTIVE |
| Frequency in Hertz | 50.0 AND 60.0 |
| Length | 10.312 INCHES NOMINAL IN |
| Voltage in Volts and Current Type | 115.0 AC |
| Prime Mover Power Rating | 125.0 WATTS |
| Style Designator | FIXED |
| Ambient Temp at Full Rated Power | 104.0 FAHRENHEIT DEGF |
| Height | 11.125 INCHES NOMINAL IN |
| Operating Speed at Rated Capacity in RPM | 1550.0 |
| Surface Treatment | ENAMEL BAKED OVERALL |
| Prime Mover Drive Shaft Bearing Type | SLEEVE |
| 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 |
|---|---|
| 4C666 PRIMARY | W.w. Grainger, Inc. Div Government Sales Division (USA) |
NSN 4140-01-391-1791 is a Fan,centrifugal, manufactured by W.w. Grainger, Inc. Div Government Sales Division, classified under FSC 4140, Fans, Air Circulators, and Blower Equipment. Status: active.
NSN 4140-01-391-1791 has 1 manufacturer part number on file: 4C666 (W.w. Grainger, Inc. Div Government Sales Division).
Key specifications for 4C666: Frequency in Hertz: 50.0 AND 60.0; Length: 10.312 INCHES NOMINAL IN; Voltage in Volts and Current Type: 115.0 AC; Prime Mover Power Rating: 125.0 WATTS. 10 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.