The Fan,tubeaxial, cataloged under National Stock Number 4140-00-004-3668, is classified within Federal Supply Class 4140 (No Item Name Available) of the Refrigeration, AC, and Air Circulating Equipment group. The primary manufacturer of record is Rotron Incorporated. Government technical data includes 24 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4140-00-004-3668 |
| Primary Part Number | 025281 |
| Item Name | Fan,tubeaxial |
| FSC / FSG | 4140 / 41 — No Item Name Available |
| Manufacturer | Rotron Incorporated |
| Status | ACTIVE |
| Surface Treatment | ENAMEL HOUSING INSIDE |
| Voltage in Volts and Current Type | 115.0 AC |
| Surface Treatment | ENAMEL HOUSING OUTSIDE |
| Prime Mover Drive Shaft Bearing Type | BALL |
| Prime Mover Type | ELECTRIC MOTOR |
| Material | ALUMINUM BLADE |
| Drive Type | DIRECT |
| Air Flow Rate | 143.000 CUBIC FEET PER MINUTE NOMINAL |
| Phase | SINGLE |
| Style Designator | FIXED |
| Surface Treatment | ENAMEL BLADE |
| Inclosure Type | FULLY INCLOSED |
| Mounting Facility Type and Quantity | 3 CLAMP |
| Housing Inside Diameter | 6.858 INCHES NOMINAL IN |
| Rotation Direction for Which Designed | CLOCKWISE |
| Frequency in Hertz | 60.0 |
| Material | ALUMINUM HOUSING INSIDE |
| Flow Direction | INWARD |
| Length | 2.470 INCHES NOMINAL IN |
| Electrical Connection Type | TERMINAL BLOCK |
| Ambient Temp at Full Rated Power | 100.0 CELSIUS DEGC |
| Diameter | 6.500 INCHES NOMINAL IN |
| Operating Speed at Rated Capacity in RPM | 1675.0 |
| Speed Adjustments | SINGLE SPEED |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| A0-74850 | Rotron Incorporated (USA) |
| 138C229H01 | Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp (USA) |
| SAUCER 559DH | Rotron Incorporated (USA) |
| 025281 PRIMARY | Rotron Incorporated (USA) |
NSN 4140-00-004-3668 is a Fan,tubeaxial, manufactured by Rotron Incorporated, classified under FSC 4140 (No Item Name Available). Status: active.
NSN 4140-00-004-3668 has 4 cross-referenced part numbers: A0-74850 (Rotron Incorporated), 138C229H01 (Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp), SAUCER 559DH (Rotron Incorporated), 025281 (Rotron Incorporated).
There are 2 known substitutes for 4140-00-004-3668: 4140-00-141-0132, 2510-01-233-3516. Verify interchangeability with system specifications before substitution.
Key specifications for 025281: Surface Treatment: ENAMEL HOUSING INSIDE; Voltage in Volts and Current Type: 115.0 AC; Surface Treatment: ENAMEL HOUSING OUTSIDE; Prime Mover Drive Shaft Bearing Type: BALL. 24 total characteristics are documented in the Federal Logistics Information System.