The Fan,centrifugal, cataloged under National Stock Number 4140-01-346-5099, 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 The Boeing Company Div Defense. 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 4140-01-346-5099 |
| Primary Part Number | 74D053124-1001 |
| Item Name | Fan,centrifugal |
| FSC / FSG | 4140 / 41 — Fans, Air Circulators, and Blower Equipment |
| Manufacturer | The Boeing Company Div Defense |
| Status | ACTIVE |
| Speed Adjustments | SINGLE SPEED |
| Phase | SINGLE |
| Inclosure Type | FULLY INCLOSED |
| Voltage in Volts and Current Type | 115.0 AC |
| Drive Type | DIRECT |
| Ambient Temp at Full Rated Power | 40.0 CELSIUS DEGC |
| Surface Treatment | ENAMEL OVERALL |
| Material | STEEL OVERALL |
| Prime Mover Type | ELECTRIC MOTOR |
| Rotation Direction for Which Designed | COUNTERCLOCKWISE |
| Prime Mover Drive Shaft Bearing Type | SLEEVE |
| Electrical Connection Type | WIRE LEAD |
| 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 |
|---|---|
| 74D053124-1001 PRIMARY | The Boeing Company Div Defense (USA) |
| Reference | Meaning |
|---|---|
| 4C442 | 5/1 Secondary reference W.w. Grainger, Inc. Div Government Sales Division |
| 74D053048-1001 | 5/9 Secondary reference The Boeing Company Div Defense |
NSN 4140-01-346-5099 is a Fan,centrifugal, manufactured by The Boeing Company Div Defense, classified under FSC 4140, Fans, Air Circulators, and Blower Equipment. Status: active.
NSN 4140-01-346-5099 has 1 manufacturer part number on file: 74D053124-1001 (The Boeing Company Div Defense).
Key specifications for 74D053124-1001: Speed Adjustments: SINGLE SPEED; Phase: SINGLE; Inclosure Type: FULLY INCLOSED; Voltage in Volts and Current Type: 115.0 AC. 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.