The Fan,ventilating, cataloged under National Stock Number 4140-01-516-3769, 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 Lockheed Martin Corporation. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 4140-01-516-3769 |
| Primary Part Number | 77421555-001 |
| Item Name | Fan,ventilating |
| FSC / FSG | 4140 / 41 — Fans, Air Circulators, and Blower Equipment |
| Manufacturer | Lockheed Martin Corporation |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL B — Remove Demilitarization Key Points |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 77421555-001 PRIMARY | Lockheed Martin Corporation (USA) |
| Reference | Meaning |
|---|---|
| 4140PL0907128 | 6/9 Informative reference only Jednolity Indeks Materialowy - Uniform Material Index |
NSN 4140-01-516-3769 is a Fan,ventilating, manufactured by Lockheed Martin Corporation, classified under FSC 4140, Fans, Air Circulators, and Blower Equipment. Status: active.
NSN 4140-01-516-3769 has 1 manufacturer part number on file: 77421555-001 (Lockheed Martin Corporation).
Key specifications for 77421555-001: Special Features: LOCATED IN THE ECU; PROVIDES COOLING AIR CIRCULATION FOR POD; MOUNTED WITH 2 CAPTIVE FASTENERS AND ELECTRICALLY INTERFACED WITH A PIGTAIL CONNECTOR; INCLUDES FAN SPEED SENSOR; GROUND FAN PROVIDES COOLING AIR CIRCULATION THROUGH THE ECU HEAT EXCHANGER DURING GROUND OPERATIONS AND ALSO HAS A FAN SPEED SENSOR; End Item Identification: PANTERA TARGETING POD. 0 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.
NSN 4140-01-516-3769 has DEMIL Code B. Demilitarization may be required before disposal or transfer to non-military entities.
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.