The Fan,vaneaxial, cataloged under National Stock Number 4140-01-546-4561, 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 Fm Af, Llc Dba American Fan Company. Government technical data includes 10 specifications, cited from the U.S. Government catalog. 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 4140-01-546-4561 |
| Primary Part Number | 500899-190-CD3757 |
| Item Name | Fan,vaneaxial |
| FSC / FSG | 4140 / 41 — Fans, Air Circulators, and Blower Equipment |
| Manufacturer | Fm Af, Llc Dba American Fan Company |
| Status | ACTIVE |
| Mounting Facility Type and Quantity | 44 FLANGE |
| Flow Direction | INWARD |
| Housing Inside Diameter | 34.000 INCHES NOMINAL IN |
| Drive Type | DIRECT |
| Style Designator | FIXED |
| Material | ALUMINUM BLADE |
| Prime Mover Type | GAS TURBINE |
| Rotation Direction for Which Designed | COUNTERCLOCKWISE |
| Static Pressure at Specified Air Flow Rate | ERR-060 |
| Air Flow Rate | 22000.0 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 |
| Part Number | Manufacturer |
|---|---|
| 500899-190 | Fm Af, Llc Dba American Fan Company (USA) |
| 500899-190-CD3757 PRIMARY | Fm Af, Llc Dba American Fan Company (USA) |
| IR340-270D2541 | Fm Af, Llc Dba American Fan Company (USA) |
| Reference | Meaning |
|---|---|
| CD-3757 | D/9 Drawing number reference only Fm Af, Llc Dba American Fan Company |
| FF-19512 | D/9 Drawing number reference only Fm Af, Llc Dba American Fan Company |
NSN 4140-01-546-4561 is a Fan,vaneaxial, manufactured by Fm Af, Llc Dba American Fan Company, classified under FSC 4140, Fans, Air Circulators, and Blower Equipment. Status: active.
NSN 4140-01-546-4561 has 3 manufacturer part numbers on file: 500899-190 (Fm Af, Llc Dba American Fan Company), 500899-190-CD3757 (Fm Af, Llc Dba American Fan Company), IR340-270D2541 (Fm Af, Llc Dba American Fan Company).
1 possible match (shared part number, not a government interchangeability claim): 4140-01-546-4697. Verify interchangeability with system specifications before substitution.
Key specifications for 500899-190-CD3757: Mounting Facility Type and Quantity: 44 FLANGE; Flow Direction: INWARD; Housing Inside Diameter: 34.000 INCHES NOMINAL IN; Drive Type: DIRECT. 10 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.