The Fan,vaneaxial, cataloged under National Stock Number 4140-01-733-6549, 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 American Cooling Systems Llc. 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Item Name | Fan,vaneaxial |
| FSC / FSG | 4140 — Fans, Air Circulators, and Blower Equipment (FSG 41) |
| Manufacturers | American Cooling Systems Llc (CAGE 503P9); Essex Electro Engineers Inc (CAGE 21269); Brighton Cromwell Llc (CAGE 3NNX8) |
| Parameter | Value |
|---|---|
| NSN | 4140-01-733-6549 |
| Primary Part Number | C739-6401 |
| Item Name | Fan,vaneaxial |
| FSC / FSG | 4140 / 41 — Fans, Air Circulators, and Blower Equipment |
| Manufacturer | American Cooling Systems Llc |
| Status | ACTIVE |
| 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 |
|---|---|
| C739-6401 PRIMARY | American Cooling Systems Llc (USA) |
| C739-6401 PRIMARY | Essex Electro Engineers Inc (USA) |
| C739-6401 PRIMARY | Brighton Cromwell Llc (USA) |
| Reference | Meaning |
|---|---|
| 4282AS1769 | D/9 Drawing number reference only Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier |
| 4282AS1769-1 | 7/2 Vendor item drawing reference Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier |
NSN 4140-01-733-6549 is a Fan,vaneaxial, manufactured by American Cooling Systems Llc, classified under FSC 4140, Fans, Air Circulators, and Blower Equipment. Status: active.
NSN 4140-01-733-6549 has 3 manufacturer part numbers on file: C739-6401 (American Cooling Systems Llc), C739-6401 (Essex Electro Engineers Inc), C739-6401 (Brighton Cromwell Llc).
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.