The Gearcase-Motor, cataloged under National Stock Number 3010-00-856-3890, is classified within Federal Supply Class 3010 (Torque Converters and Speed Changers) of the Mechanical Power Transmission Equipment group. The manufacturer of record is Raytheon Company Div Rmd Strategic. Government technical data includes 27 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 3010-00-856-3890 |
| Primary Part Number | 549398 |
| Item Name | Gearcase-Motor |
| FSC / FSG | 3010 / 30 — Torque Converters and Speed Changers |
| Manufacturer | Raytheon Company Div Rmd Strategic |
| Status | ACTIVE |
| Mounting Facility Type and Quantity | 3 UNTHREADED HOLE(S) |
| Duty Cycle | CONTINUOUS |
| Spline Minor Diameter | 0.4850 INCHES NOMINAL SINGLE END IN |
| Phase | SINGLE INPUT |
| Shaft Diameter | 0.5000 INCHES NOMINAL SINGLE END IN |
| Frequency in Hertz | 60.0 INPUT |
| Shaft Center to Mounting Surface Distance | 3.840 INCHES SINGLE END IN |
| Current Type | AC INPUT |
| Winding Type | INDUCTION-SHADED POLE |
| Geared Head Output Shaft Alignment Position | OFFSET ABOVE PARALLEL TO SHAFT AXIS SINGLE END |
| Spline Length | 0.940 INCHES NOMINAL SINGLE END IN |
| Cooling Method | AMBIENT AIR |
| Shaft Rotation Direction | CLOCKWISE OR COUNTERCLOCKWISE SINGLE END |
| Features Provided | DAMPER AND HORIZONTAL MOUNTING POSITION |
| Spline Quantity | 17 SINGLE END |
| Connection Type and Voltage Rating in Volts | 115.0 LINE TO NEUTRAL SINGLE INPUT |
| Nominal Center to Center Distance Between Mounting Facilities Parallel to Length | 2.250 INCHES IN |
| Torque Rating and Type | 220.0 INCH-POUNDS STALLED IN |
| Nominal Center to Center Distance Between Mounting Facilities Parallel to Width | 4.750 INCHES IN |
| Length of Shaft From Housing | 0.940 INCHES SINGLE END IN |
| Speed Control Method and Device Type | AUTOMATIC MECHANICAL |
| Current Rating in Amps | 0.400 SINGLE OUTPUT |
| Enclosure Feature | OPEN PROTECTED |
| Current Rating Method | LOAD |
| Power Rating | 28.0000 WATTS OUTPUT |
| Shaft End Characteristic | A14 SINGLE STYLE SINGLE END |
| Terminal Type and Quantity | 9 SCREW |
| 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 |
|---|---|
| 549398 PRIMARY | Raytheon Company Div Rmd Strategic (USA) |
| MF482-105-1 | Ge Aviation Systems Llc Dba Ge Aviation Systems Llc (USA) |
| Reference | Meaning |
|---|---|
| 748032-40 | 5/9 Secondary reference Air-a-Plane Corp |
| 13214E0741 | 5/2 Secondary reference U.S. Government activity |
| 2500-149D | 5/9 Secondary reference Tyco Inc |
| 549398 | 5/2 Secondary reference U.S. Government activity |
NSN 3010-00-856-3890 is a Gearcase-Motor, manufactured by Raytheon Company Div Rmd Strategic, classified under FSC 3010, Torque Converters and Speed Changers. Status: active.
NSN 3010-00-856-3890 has 2 manufacturer part numbers on file: 549398 (Raytheon Company Div Rmd Strategic), MF482-105-1 (Ge Aviation Systems Llc Dba Ge Aviation Systems Llc).
1 possible match (shared part number, not a government interchangeability claim): 6750-01-427-5317. Verify interchangeability with system specifications before substitution.
Key specifications for 549398: Mounting Facility Type and Quantity: 3 UNTHREADED HOLE(S); Duty Cycle: CONTINUOUS; Spline Minor Diameter: 0.4850 INCHES NOMINAL SINGLE END IN; Phase: SINGLE INPUT. 27 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.