The Fan,centrifugal, cataloged under National Stock Number 1660-01-618-8277, is classified within Federal Supply Class 1660 (Aircraft Air Conditioning, Heating, and Pressurizing Equipment) of the Aircraft Components and Accessories group. The manufacturer of record is Ems Development Corporation. Government technical data includes 13 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 1660-01-618-8277 |
| Primary Part Number | 496D1001 ITEM NO 11 |
| Item Name | Fan,centrifugal |
| FSC / FSG | 1660 / 16 — Aircraft Air Conditioning, Heating, and Pressurizing Equipment |
| Manufacturer | Ems Development Corporation |
| Status | ACTIVE |
| Outlet Location | BOTTOM |
| Speed Adjustments | FOUR SPEED |
| Shaft Bearing Type | BALL |
| Inclosure Type | PARTIALLY INCLOSED |
| Length | 2.81 INCHES NOMINAL IN |
| Voltage in Volts and Current Type | 24.0 DC |
| Drive Type | DIRECT |
| Style Designator | FIXED, INVERTED, RECTANGULAR OUTLET |
| Discharge Direction | HORIZONTAL |
| Height | 3.15 INCHES NOMINAL IN |
| Operating Speed at Rated Capacity in RPM | 4200.0 |
| Width | 1.26 INCHES NOMINAL IN |
| Rotation Direction for Which Designed | COUNTERCLOCKWISE |
| 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 |
|---|---|
| 496D1001 ITEM NO 11 PRIMARY | Ems Development Corporation (USA) |
| Reference | Meaning |
|---|---|
| 031616 | 5/9 Secondary reference Digi-Key Corp |
NSN 1660-01-618-8277 is a Fan,centrifugal, manufactured by Ems Development Corporation, classified under FSC 1660, Aircraft Air Conditioning, Heating, and Pressurizing Equipment. Status: active.
NSN 1660-01-618-8277 has 1 manufacturer part number on file: 496D1001 ITEM NO 11 (Ems Development Corporation).
Key specifications for 496D1001 ITEM NO 11: Outlet Location: BOTTOM; Speed Adjustments: FOUR SPEED; Shaft Bearing Type: BALL; Inclosure Type: PARTIALLY INCLOSED. 13 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.