The Fan,ventilating, cataloged under National Stock Number 4140-01-618-8704, 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 Ems Development Corporation. Government technical data includes 12 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4140-01-618-8704 |
| Primary Part Number | 496D1003 ITEM NO 11 |
| Item Name | Fan,ventilating |
| FSC / FSG | 4140 / 41 — Fans, Air Circulators, and Blower Equipment |
| Manufacturer | Ems Development Corporation |
| Status | ACTIVE |
| Length | 39.12 MILLIMETERS NOMINAL MM |
| Voltage in Volts and Current Type | 48.0 DC |
| Housing Inside Diameter | 104.78 MILLIMETERS NOMINAL MM |
| Drive Type | DIRECT |
| Prime Mover Power Rating | 4.30 WATTS |
| Style Designator | FIXED |
| Height | 119.13 MILLIMETERS NOMINAL MM |
| Operating Speed at Rated Capacity in RPM | 2475.0 |
| Width | 119.13 MILLIMETERS NOMINAL MM |
| Rotation Direction for Which Designed | COUNTERCLOCKWISE |
| Static Pressure at Specified Air Flow Rate | ERR-060 |
| Air Flow Rate | 85.0 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 |
|---|---|
| 496D1003 ITEM NO 11 | Ems Development Corporation (USA) |
| 496D8006-1 | Ems Development Corporation (USA) |
| Reference | Meaning |
|---|---|
| WHISPER XL-WD48B7-030714 | 5/9 Secondary reference Comair Rotron Inc Sub of Kl Industries Inc |
| WHISPERER XL-WD48B7-030714 | 5/9 Secondary reference Digi-Key Corp |
| 030714 | 3/9 Design control — primary reference Digi-Key Corp |
| 030714 | 5/9 Secondary reference Comair Rotron Inc Sub of Kl Industries Inc |
NSN 4140-01-618-8704 is a Fan,ventilating, manufactured by Ems Development Corporation, classified under FSC 4140, Fans, Air Circulators, and Blower Equipment. Status: active.
NSN 4140-01-618-8704 has 2 manufacturer part numbers on file: 496D1003 ITEM NO 11 (Ems Development Corporation), 496D8006-1 (Ems Development Corporation).
Key specifications for 496D1003 ITEM NO 11: Length: 39.12 MILLIMETERS NOMINAL MM; Voltage in Volts and Current Type: 48.0 DC; Housing Inside Diameter: 104.78 MILLIMETERS NOMINAL MM; Drive Type: DIRECT. 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.