The Fan,vaneaxial, cataloged under National Stock Number 4140-00-640-6124, is classified within Federal Supply Class 4140 (Fans, Air Circulators, and Blower Equipment) of the Refrigeration, AC, and Air Circulating Equipment group. Government technical data includes 28 specifications, cited from the U.S. Government catalog. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 4140-00-640-6124 |
| Item Name | Fan,vaneaxial |
| FSC / FSG | 4140 / 41 — Fans, Air Circulators, and Blower Equipment |
| Status | ACTIVE |
| Mounting Facility Type and Quantity | 2 FLANGE |
| Speed Adjustments | SINGLE SPEED |
| Inclosure Type | FULLY INCLOSED |
| Length | 20.000 INCHES NOMINAL IN |
| Voltage in Volts and Current Type | 345.0 DC |
| Flow Direction | INWARD |
| Housing Inside Diameter | 11.990 INCHES MINIMUM AND 12.000 INCHES MAXIMUM IN |
| Drive Type | DIRECT |
| Prime Mover Power Rating | 0.500 HORSEPOWER |
| Quantity | 1 |
| Style Designator | FIXED |
| Diameter | 11.970 INCHES MINIMUM AND 11.980 INCHES MAXIMUM IN |
| Ambient Temp at Full Rated Power | 50.0 CELSIUS DEGC |
| Stage Quantity | 1 |
| Operating Speed at Rated Capacity in RPM | 3500.0 |
| Surface Treatment | ZINC HOUSING INSIDE |
| Surface Treatment | ZINC HOUSING OUTSIDE |
| Environmental Protection | SPLASH PROOF |
| Test Data Document | 81349-MILF18953 SPECIFICATION (INCLUDES ENGINEERING TYPE BULLETINS, BROCHURES,ETC., THAT REFLECT SPECIFICATION TYPE DATA IN SPECIFICATION FORMAT; EXCLUDES COMMERCIAL CATALOGS, INDUSTRY DIRECTORIES, AND SIMILAR TRADE PUBLICATIONS, REFLECTING GENERAL TYPE DATA ON CERTAIN ENVIRONMENTAL AND PERFORMANCE REQUIREMENTS AND TEST CONDITIONS THAT ARE SHOWN AS "TYPICAL", "AVERAGE", "NOMINAL", ETC.). |
| Material | STEEL HOUSING |
| Material | ALUMINUM BLADE |
| Prime Mover Type | ELECTRIC MOTOR |
| Rotation Direction for Which Designed | CLOCKWISE |
| Prime Mover Drive Shaft Bearing Type | BALL |
| Electrical Connection Type | TERMINAL BLOCK |
| Reference Number Differentiating Characteristics | AS DIFFERENTIATED BY GENERAL ELECTRIC MOTOR DWG NO. 7081F42 |
| Static Pressure at Specified Air Flow Rate | ERR-060 |
| Air Flow Rate | 1200.0 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 |
| Reference | Meaning |
|---|---|
| S3801-3276004 | 5/1 Secondary reference U.S. Government activity |
| MILF18953TYPEA | 4/1 Identification reference U.S. Government activity |
| EM6956SR3-4D175V345V | C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity |
| EM6956 | 3/9 Design control — primary reference Wing Industries |
NSN 4140-00-640-6124 is a Fan,vaneaxial, classified under FSC 4140, Fans, Air Circulators, and Blower Equipment. Status: active.
1 possible match (shared part number, not a government interchangeability claim): 4140-01-319-6353. Verify interchangeability with system specifications before substitution.
Key specifications for 4140-00-640-6124: Mounting Facility Type and Quantity: 2 FLANGE; Speed Adjustments: SINGLE SPEED; Inclosure Type: FULLY INCLOSED; Length: 20.000 INCHES NOMINAL IN. 28 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.