The Guard,fan Impeller, cataloged under National Stock Number 4140-01-618-6417, 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 Naval Sea Systems Command. The record lists 3 manufacturer part numbers 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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.
| Item Name | Guard,fan Impeller |
| FSC / FSG | 4140 — Fans, Air Circulators, and Blower Equipment (FSG 41) |
| Manufacturers | Naval Sea Systems Command (CAGE 53711); Raytheon Company (CAGE 15090) |
| Parameter | Value |
|---|---|
| NSN | 4140-01-618-6417 |
| Primary Part Number | 1974326 |
| Item Name | Guard,fan Impeller |
| FSC / FSG | 4140 / 41 — Fans, Air Circulators, and Blower Equipment |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| 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 |
|---|---|
| 1974326 PRIMARY | Naval Sea Systems Command (USA) |
| 5262548-003 | Naval Sea Systems Command (USA) |
| 5262548-003 PRIMARY | Raytheon Company (USA) |
| Reference | Meaning |
|---|---|
| 529365000 | 3/2 Design control — primary reference U.S. Government activity |
| 529365 | 3/9 Design control — primary reference U.S. Government activity |
NSN 4140-01-618-6417 is a Guard,fan Impeller, manufactured by Naval Sea Systems Command, classified under FSC 4140, Fans, Air Circulators, and Blower Equipment. Status: active.
NSN 4140-01-618-6417 has 3 manufacturer part numbers on file: 1974326 (Naval Sea Systems Command), 5262548-003 (Naval Sea Systems Command), 5262548-003 (Raytheon Company).
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.