The Housing,vaneaxial Fan, cataloged under National Stock Number 4140-01-294-6491, 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 Dynamic Air Engineering, Inc.. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4140-01-294-6491 |
| Primary Part Number | A2781-1073 |
| Item Name | Housing,vaneaxial Fan |
| FSC / FSG | 4140 / 41 — Fans, Air Circulators, and Blower Equipment |
| Manufacturer | Dynamic Air Engineering, Inc. |
| Status | ACTIVE |
| General Characteristics Item Description | ALUMINUM ALLOY; HOUSING INSIDE DIA 9.500 IN.; OVERALL LENGTH 13.000 IN. IN |
| 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 |
|---|---|
| A2781-1073 PRIMARY | Dynamic Air Engineering, Inc. (USA) |
| Reference | Meaning |
|---|---|
| A2781-1073 | C/1 Advisory reference — outside the item-of-supply concept Zf Industrieantriebe Witten Gmbh |
NSN 4140-01-294-6491 is a Housing,vaneaxial Fan, manufactured by Dynamic Air Engineering, Inc., classified under FSC 4140, Fans, Air Circulators, and Blower Equipment. Status: active.
NSN 4140-01-294-6491 has 1 manufacturer part number on file: A2781-1073 (Dynamic Air Engineering, Inc.).
Key specifications for A2781-1073: General Characteristics Item Description: ALUMINUM ALLOY; HOUSING INSIDE DIA 9.500 IN.; OVERALL LENGTH 13.000 IN. IN. 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.