The Fan,tubeaxial, cataloged under National Stock Number 4140-01-321-7853, 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 Curtiss-Wright Controls Integrated Sensing, Inc.. Government technical data includes 4 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 4140-01-321-7853 |
| Primary Part Number | TBD |
| Item Name | Fan,tubeaxial |
| FSC / FSG | 4140 / 41 — Fans, Air Circulators, and Blower Equipment |
| Manufacturer | Curtiss-Wright Controls Integrated Sensing, Inc. |
| Status | ACTIVE |
| Length | 4.120 INCHES NOMINAL IN |
| Housing Inside Diameter | 4.500 INCHES NOMINAL IN |
| Style Designator | FIXED |
| Material | ALUMINUM ALLOY 6061 OR STEEL HOUSING |
| 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 |
|---|---|
| 799205639-001 | Lockheed Martin Corporation (USA) |
| TBD PRIMARY | Curtiss-Wright Controls Integrated Sensing, Inc. (USA) |
| Reference | Meaning |
|---|---|
| TBD | 5/9 Secondary reference Dynamic Air Engineering, Inc. |
NSN 4140-01-321-7853 is a Fan,tubeaxial, manufactured by Curtiss-Wright Controls Integrated Sensing, Inc., classified under FSC 4140, Fans, Air Circulators, and Blower Equipment. Status: active.
NSN 4140-01-321-7853 has 2 manufacturer part numbers on file: 799205639-001 (Lockheed Martin Corporation), TBD (Curtiss-Wright Controls Integrated Sensing, Inc.).
Key specifications for TBD: Length: 4.120 INCHES NOMINAL IN; Housing Inside Diameter: 4.500 INCHES NOMINAL IN; Style Designator: FIXED; Material: ALUMINUM ALLOY 6061 OR STEEL HOUSING. 4 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.