The Motor-Tachometer Generator, cataloged under National Stock Number 6105-00-993-0148, is classified within Federal Supply Class 6105 (Motors, Electrical) of the Electric Wire, Power, and Distribution Equipment group. The manufacturer of record is Lockheed Martin Corporation Div Rms. Government technical data includes 23 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 6105-00-993-0148 |
| Primary Part Number | 77C704661-1 |
| Item Name | Motor-Tachometer Generator |
| FSC / FSG | 6105 / 61 — Motors, Electrical |
| Manufacturer | Lockheed Martin Corporation Div Rms |
| Status | ACTIVE |
| Mounting Facility Type and Quantity | 1 CLAMP COLLAR |
| Phase | TWO INPUT |
| Shaft Diameter | 0.1764 INCHES NOMINAL SINGLE END IN |
| Frequency in Hertz | 400.0 OUTPUT |
| Current Type | AC INPUT |
| Calibration Speed in RPM | 1000.0 |
| Mounting Method | CLAMP RING(S) |
| Cooling Method | FAN COOLED |
| Features Provided | VERTICAL MOUNTING POSITION AND HORIZONTAL MOUNTING POSITION |
| Maximum Operating Altitude Rating | 10000.0 FEET FT |
| Connection Type and Voltage Rating in Volts | 115.0 LINE TO NEUTRAL SINGLE INPUT |
| Calibration Voltage Output Type in Volts | 32.0 AC |
| Torque Rating and Type | 1.5 INCH-OUNCES STALLED IN |
| Length of Shaft From Housing | 0.397 INCHES SINGLE END IN |
| Control Field Voltage Type and Rating in Volts | 18.0 AC AND 36.0 AC |
| Enclosure Feature | TOTALLY ENCLOSED |
| Power Rating | 5.400 WATTS INPUT |
| Shaft End Characteristic | A1 SINGLE STYLE SINGLE END |
| Excitor Type | SEPARATELY EXCITED |
| Terminal Type and Quantity | 10 SCREW |
| Rotor Speed Rating in RPM | 4500.0 SINGLE NO LOAD |
| Temp Rating | -55.0 OPERATING CELSIUS AND 65.0 OPERATING CELSIUS |
| Inclosure Specification | COMMERCIAL |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL B — Remove Demilitarization Key Points |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 77C704661-1 PRIMARY | Lockheed Martin Corporation Div Rms (USA) |
| MK12M0D2 PRIMARY | Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA) |
| Reference | Meaning |
|---|---|
| 77C704661P001 | 7/2 Vendor item drawing reference Lockheed Martin Corporation Div Rms |
NSN 6105-00-993-0148 is a Motor-Tachometer Generator, manufactured by Lockheed Martin Corporation Div Rms, classified under FSC 6105, Motors, Electrical. Status: active.
NSN 6105-00-993-0148 has 2 manufacturer part numbers on file: 77C704661-1 (Lockheed Martin Corporation Div Rms), MK12M0D2 (Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier).
Key specifications for 77C704661-1: Mounting Facility Type and Quantity: 1 CLAMP COLLAR; Phase: TWO INPUT; Shaft Diameter: 0.1764 INCHES NOMINAL SINGLE END IN; Frequency in Hertz: 400.0 OUTPUT. 23 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.
NSN 6105-00-993-0148 has DEMIL Code B. Demilitarization may be required before disposal or transfer to non-military entities.
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.