The Impeller,fan,centrifugal, cataloged under National Stock Number 4140-01-677-7732, 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 Flyer Defense, Llc. Government technical data includes 4 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4140-01-677-7732 |
| Primary Part Number | SPAL4006346 |
| Item Name | Impeller,fan,centrifugal |
| FSC / FSG | 4140 / 41 — Fans, Air Circulators, and Blower Equipment |
| Manufacturer | Flyer Defense, Llc |
| Status | ACTIVE |
| Length | 786.0 INCHES NOMINAL IN |
| Height | 118.0 INCHES NOMINAL IN |
| Width | 434.0 INCHES NOMINAL IN |
| Material | PLASTIC OVERALL |
| 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 |
|---|---|
| SPAL4006346 PRIMARY | Flyer Defense, Llc (USA) |
| AL4006346 | General Dynamics Ordnance and Tactical Systems, Inc. (USA) |
| Reference | Meaning |
|---|---|
| AL4006346 | 5/9 Secondary reference Flyer Defense, Llc |
NSN 4140-01-677-7732 is a Impeller,fan,centrifugal, manufactured by Flyer Defense, Llc, classified under FSC 4140, Fans, Air Circulators, and Blower Equipment. Status: active.
NSN 4140-01-677-7732 has 2 manufacturer part numbers on file: SPAL4006346 (Flyer Defense, Llc), AL4006346 (General Dynamics Ordnance and Tactical Systems, Inc.).
Key specifications for SPAL4006346: Length: 786.0 INCHES NOMINAL IN; Height: 118.0 INCHES NOMINAL IN; Width: 434.0 INCHES NOMINAL IN; Part Name Assigned by Controlling Agency: FAN MOTOR AND SHROUD, ASSEMBLY. 4 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.