The Fan,circulating, cataloged under National Stock Number 4140-00-918-2971, 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 12 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 4140-00-918-2971 |
| Item Name | Fan,circulating |
| FSC / FSG | 4140 / 41 — Fans, Air Circulators, and Blower Equipment |
| Status | ACTIVE |
| Mounting Facility Type and Quantity | 6 UNTHREADED HOLE(S) |
| Phase | SINGLE |
| Frequency in Hertz | 50.0 AND 60.0 |
| Voltage in Volts and Current Type | 230.0 AC |
| Quantity | 1 |
| Diameter | 6.500 INCHES NOMINAL IN |
| Operating Speed at Rated Capacity in RPM | 3450.0 |
| Surface Treatment | ANODIZE BLADE |
| Material | ALUMINUM BLADE |
| Prime Mover Type | ELECTRIC MOTOR |
| Rotation Direction for Which Designed | COUNTERCLOCKWISE |
| Air Flow Rate | 180.0 CUBIC FEET PER MINUTE NOMINAL |
| 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 |
|---|---|
| MFKS5501L218AS11786 | 5/9 Secondary reference U.S. Government activity |
| MF-KS-5501L 218AF W/SCREEN | 3/2 Design control — primary reference U.S. Government activity |
NSN 4140-00-918-2971 is a Fan,circulating, classified under FSC 4140, Fans, Air Circulators, and Blower Equipment. Status: active.
Key specifications for 4140-00-918-2971: Mounting Facility Type and Quantity: 6 UNTHREADED HOLE(S); Phase: SINGLE; Frequency in Hertz: 50.0 AND 60.0; Voltage in Volts and Current Type: 230.0 AC. 12 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.