The Fan,circulating, cataloged under National Stock Number 4140-01-644-5478, is classified within Federal Supply Class 4140 (Fans, Air Circulators, and Blower Equipment) of the Refrigeration, AC, and Air Circulating Equipment group. Government technical data includes 4 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4140-01-644-5478 |
| Item Name | Fan,circulating |
| FSC / FSG | 4140 / 41 — Fans, Air Circulators, and Blower Equipment |
| Status | ACTIVE |
| Length | 9.940 INCHES NOMINAL IN |
| Height | 0.875 INCHES NOMINAL IN |
| Width | 4.500 INCHES NOMINAL IN |
| Material | STEEL CORROSION RESISTING OVERALL |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| D650-170556 REV F ITEM 2 | D/9 Drawing number reference only Despatch Industries Limited Partnership Dba Despatch Industries |
| 007309 | 3/9 Design control — primary reference Despatch Industries Limited Partnership Dba Despatch Industries |
NSN 4140-01-644-5478 is a Fan,circulating, classified under FSC 4140, Fans, Air Circulators, and Blower Equipment. Status: active.
Key specifications for 4140-01-644-5478: Length: 9.940 INCHES NOMINAL IN; Height: 0.875 INCHES NOMINAL IN; Width: 4.500 INCHES NOMINAL IN; Part Name Assigned by Controlling Agency: FAN. 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.