The Fan,circulating, cataloged under National Stock Number 4140-00-618-8093, 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 Arc Systems Inc. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 5 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Item Name | Fan,circulating |
| FSC / FSG | 4140 — Fans, Air Circulators, and Blower Equipment (FSG 41) |
| Manufacturers | Arc Systems Inc (CAGE 67245) |
| Parameter | Value |
|---|---|
| NSN | 4140-00-618-8093 |
| Primary Part Number | 25-31-9 |
| Item Name | Fan,circulating |
| FSC / FSG | 4140 / 41 — Fans, Air Circulators, and Blower Equipment |
| Manufacturer | Arc Systems Inc |
| 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 |
|---|---|
| 25-31-9 | Arc Systems Inc (USA) |
| Reference | Meaning |
|---|---|
| DFE-AS-4501-L-115JF | 5/1 Secondary reference U.S. Government activity |
| A0-16326 | 5/9 Secondary reference U.S. Government activity |
| 022361 | 3/2 Design control — primary reference U.S. Government activity |
| 1011955-C | 5/9 Secondary reference Lockheed Martin Corporation Div Rms - Mitchel Field |
| 2006590 | 5/9 Secondary reference Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier |
NSN 4140-00-618-8093 is a Fan,circulating, manufactured by Arc Systems Inc, classified under FSC 4140, Fans, Air Circulators, and Blower Equipment. Status: active.
NSN 4140-00-618-8093 has 1 manufacturer part number on file: 25-31-9 (Arc Systems Inc).
5 possible matches (shared part number, not a government interchangeability claim): 4820-01-184-1921, 2805-01-255-4394, 6515-01-420-3136. Verify interchangeability with system specifications before substitution.
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.