The Fan,vaneaxial, cataloged under National Stock Number 4140-00-004-9949, 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 Grimes Aerospace Company. Government technical data includes 19 specifications, cited from the U.S. Government catalog. The record lists 4 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 4140-00-004-9949 |
| Primary Part Number | 81D05-1 |
| Item Name | Fan,vaneaxial |
| FSC / FSG | 4140 / 41 — Fans, Air Circulators, and Blower Equipment |
| Manufacturer | Grimes Aerospace Company |
| Status | ACTIVE |
| Mounting Facility Type and Quantity | 6 UNTHREADED HOLE(S) |
| Speed Adjustments | SINGLE SPEED |
| Phase | THREE |
| Frequency in Hertz | 400.0 |
| Inclosure Type | FULLY INCLOSED |
| Length | 9.500 INCHES NOMINAL IN |
| Voltage in Volts and Current Type | 115.0 AC |
| Flow Direction | INWARD |
| Housing Inside Diameter | 10.500 INCHES NOMINAL IN |
| Drive Type | DIRECT |
| Quantity | 1 |
| Style Designator | FIXED |
| Diameter | 8.460 INCHES NOMINAL IN |
| Stage Quantity | 1 |
| Material | ALUMINUM ALLOY OVERALL |
| Rotation Direction for Which Designed | CLOCKWISE |
| Prime Mover Drive Shaft Bearing Type | BALL |
| Electrical Connection Type | CORD W/ATTACHED PLUG |
| Reference Number Differentiating Characteristics | DIFFERENTIATED BY SOURCE CONTROL DRAWING |
| 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 |
|---|---|
| 81D05-1 | Honeywell International Inc. Div Aerospace - Torrance (USA) |
| 81D05-1/-2 | Honeywell International Inc. Div Aerospace - Torrance (USA) |
| 123SCEC5150-7 | Northrop Grumman Systems Corporation (USA) |
| 81D05-1 | Grimes Aerospace Company (USA) |
| Reference | Meaning |
|---|---|
| 81D05-1 | 3/9 Design control — primary reference U.S. Government activity |
NSN 4140-00-004-9949 is a Fan,vaneaxial, manufactured by Grimes Aerospace Company, classified under FSC 4140, Fans, Air Circulators, and Blower Equipment. Status: active.
NSN 4140-00-004-9949 has 4 manufacturer part numbers on file: 81D05-1 (Honeywell International Inc. Div Aerospace - Torrance), 81D05-1/-2 (Honeywell International Inc. Div Aerospace - Torrance), 123SCEC5150-7 (Northrop Grumman Systems Corporation), 81D05-1 (Grimes Aerospace Company).
Key specifications for 81D05-1: Mounting Facility Type and Quantity: 6 UNTHREADED HOLE(S); Speed Adjustments: SINGLE SPEED; Phase: THREE; Frequency in Hertz: 400.0. 19 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.