The Fan,tubeaxial, cataloged under National Stock Number 4140-01-249-7261, 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 Div Rms. Government technical data includes 24 specifications, 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through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4140-01-249-7261 |
| Primary Part Number | 77C719789P1 |
| Item Name | Fan,tubeaxial |
| FSC / FSG | 4140 / 41 — Fans, Air Circulators, and Blower Equipment |
| Manufacturer | Lockheed Martin Corporation Div Rms |
| Status | ACTIVE |
| Mounting Facility Type and Quantity | 4 UNTHREADED HOLE(S) |
| Speed Adjustments | SINGLE SPEED |
| Phase | THREE |
| Frequency in Hertz | 60.0 |
| Inclosure Type | FULLY INCLOSED |
| Length | 2.000 INCHES NOMINAL IN |
| Voltage in Volts and Current Type | 200.0 AC |
| Flow Direction | INWARD |
| Housing Inside Diameter | 6.375 INCHES NOMINAL IN |
| Drive Type | DIRECT |
| Prime Mover Power Rating | 24.000 WATTS |
| Style Designator | FIXED |
| Ambient Temp at Full Rated Power | -55.0 CELSIUS AND 71.0 CELSIUS DEGC |
| Height | 6.750 INCHES NOMINAL IN |
| Operating Speed at Rated Capacity in RPM | 3250.0 |
| Environmental Protection | MOISTURE RESISTANT AND SHOCK PROOF AND VIBRATION PROOF |
| Width | 5.920 INCHES NOMINAL IN |
| Material | PLASTIC POLYCARBONATE BLADE |
| Prime Mover Type | ELECTRIC MOTOR |
| Rotation Direction for Which Designed | COUNTERCLOCKWISE |
| Prime Mover Drive Shaft Bearing Type | BALL |
| Electrical Connection Type | WIRE LEAD |
| Static Pressure at Specified Air Flow Rate | ERR-060 |
| Air Flow Rate | 220.0 CUBIC FEET PER MINUTE NOMINAL |
| 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 |
|---|---|
| 77C719789P1 | Lockheed Martin Corporation Div Rms (USA) |
| Reference | Meaning |
|---|---|
| ML9FL 028ECDC N 1860JF | 5/2 Secondary reference U.S. Government activity |
| 010397 | 5/9 Secondary reference U.S. Government activity |
| ML9FL-028ECDC-N-1860JS | 5/9 Secondary reference U.S. Government activity |
| 010397000 | 3/2 Design control — primary reference U.S. Government activity |
| 77C719789 | D/9 Drawing number reference only Lockheed Martin Corporation Div Rms |
NSN 4140-01-249-7261 is a Fan,tubeaxial, manufactured by Lockheed Martin Corporation Div Rms, classified under FSC 4140, Fans, Air Circulators, and Blower Equipment. Status: active.
NSN 4140-01-249-7261 has 1 manufacturer part number on file: 77C719789P1 (Lockheed Martin Corporation Div Rms).
1 possible match (shared part number, not a government interchangeability claim): 6515-01-488-5723. Verify interchangeability with system specifications before substitution.
Key specifications for 77C719789P1: Mounting Facility Type and Quantity: 4 UNTHREADED HOLE(S); Speed Adjustments: SINGLE SPEED; Phase: THREE; Frequency in Hertz: 60.0. 24 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.