The Fan,centrifugal, cataloged under National Stock Number 4140-01-261-0028, 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 6 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4140-01-261-0028 |
| Primary Part Number | FI-4124-41/2EARR4-9IN WHL |
| Item Name | Fan,centrifugal |
| FSC / FSG | 4140 / 41 — Fans, Air Circulators, and Blower Equipment |
| Manufacturer | Fm Af, Llc Dba American Fan Company |
| Status | ACTIVE |
| Outlet Location | TOP |
| Drive Type | DIRECT |
| Style Designator | FIXED, RECTANGULAR OUTLETS |
| Discharge Direction | HORIZONTAL |
| Prime Mover Type | ELECTRIC MOTOR |
| Rotation Direction for Which Designed | COUNTERCLOCKWISE |
| 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 |
|---|---|
| FI-4124-41/2EARR4-9IN WHL PRIMARY | Fm Af, Llc Dba American Fan Company (USA) |
| Reference | Meaning |
|---|---|
| FI-4124-41/2EARR4-9IN WHL | 3/9 Design control — primary reference New Philadelphia Fan Co Buffalo Forge Marine Fans |
| FI-4124-4I/2EAR R4-9IN WHL | C/1 Advisory reference — outside the item-of-supply concept Zf Industrieantriebe Witten Gmbh |
NSN 4140-01-261-0028 is a Fan,centrifugal, manufactured by Fm Af, Llc Dba American Fan Company, classified under FSC 4140, Fans, Air Circulators, and Blower Equipment. Status: active.
NSN 4140-01-261-0028 has 1 manufacturer part number on file: FI-4124-41/2EARR4-9IN WHL (Fm Af, Llc Dba American Fan Company).
Key specifications for FI-4124-41/2EARR4-9IN WHL: Outlet Location: TOP; Drive Type: DIRECT; Style Designator: FIXED, RECTANGULAR OUTLETS; Discharge Direction: HORIZONTAL. 6 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.