The Fan,circulating, cataloged under National Stock Number 4140-01-642-1826, 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 Lockheed Martin Services, Llc. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4140-01-642-1826 |
| Primary Part Number | ACS-4450-FANASSY= |
| Item Name | Fan,circulating |
| FSC / FSG | 4140 / 41 — Fans, Air Circulators, and Blower Equipment |
| Manufacturer | Lockheed Martin Services, Llc |
| 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 |
|---|---|
| ACS-4450-FANASSY= PRIMARY | Lockheed Martin Services, Llc (USA) |
| ACS-4450-FANASSY= | Cisco Systems Inc (USA) |
NSN 4140-01-642-1826 is a Fan,circulating, manufactured by Lockheed Martin Services, Llc, classified under FSC 4140, Fans, Air Circulators, and Blower Equipment. Status: active.
NSN 4140-01-642-1826 has 2 manufacturer part numbers on file: ACS-4450-FANASSY= (Lockheed Martin Services, Llc), ACS-4450-FANASSY= (Cisco Systems Inc).
1 possible match (shared part number, not a government interchangeability claim): 4140-01-685-9529. Verify interchangeability with system specifications before substitution.
Key specifications for ACS-4450-FANASSY=: Special Features: CISCO ISR4450 FAN ASSEMBLY, SPARE; Part Name Assigned by Controlling Agency: FAN ASSEMBLY; End Item Identification: ENROUTE AUTOMATION MODERNIZATION (ERAM). 0 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.