The Inlet Vane Assembly,fan, cataloged under National Stock Number 4140-01-177-4776, 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 1 specification, 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 4140-01-177-4776 |
| Primary Part Number | EO-76434 |
| Item Name | Inlet Vane Assembly,fan |
| FSC / FSG | 4140 / 41 — Fans, Air Circulators, and Blower Equipment |
| Manufacturer | Fm Af, Llc Dba American Fan Company |
| Status | ACTIVE |
| General Characteristics Item Description | CONSISTS OF VARIABLE INLET VANE CONTROL MECHANISM P/N 7W-67680-9,INLET ANGLE RING P/N 4W-86676-7; CONTROL LEVER ASSEMBLY P/N C2-9543-1 W |
| 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 |
|---|---|
| EO-76434 PRIMARY | Fm Af, Llc Dba American Fan Company (USA) |
| Reference | Meaning |
|---|---|
| EO-76434 | 5/9 Secondary reference New Philadelphia Fan Co Buffalo Forge Marine Fans |
| D2-9540 | 5/9 Secondary reference New Philadelphia Fan Co Buffalo Forge Marine Fans |
NSN 4140-01-177-4776 is a Inlet Vane Assembly,fan, manufactured by Fm Af, Llc Dba American Fan Company, classified under FSC 4140, Fans, Air Circulators, and Blower Equipment. Status: active.
NSN 4140-01-177-4776 has 1 manufacturer part number on file: EO-76434 (Fm Af, Llc Dba American Fan Company).
Key specifications for EO-76434: General Characteristics Item Description: CONSISTS OF VARIABLE INLET VANE CONTROL MECHANISM P/N 7W-67680-9,INLET ANGLE RING P/N 4W-86676-7; CONTROL LEVER ASSEMBLY P/N C2-9543-1 W; End Item Identification: CENTRIFUGAL FAN,BUFFALO FORGE CO MODEL 890-L25 DES. 6 V.I.V V. 1 specification is 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.