The Motor-Tachometer Generator, cataloged under National Stock Number 6105-00-446-2971, is classified within Federal Supply Class 6105 (Motors, Electrical) of the Electric Wire, Power, and Distribution Equipment group. The manufacturer of record is General Dynamics Motion Control Llc. Government technical data includes 24 specifications, cited from the U.S. Government catalog. The record lists 3 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active. Unit of issue: EA.
| Parameter | Value |
|---|---|
| NSN | 6105-00-446-2971 |
| Primary Part Number | 11G4G-AB1-E1GH31 |
| Item Name | Motor-Tachometer Generator |
| FSC / FSG | 6105 / 61 — Motors, Electrical |
| Manufacturer | General Dynamics Motion Control Llc |
| Status | ACTIVE |
| Mounting Facility Type and Quantity | 1 CLAMP COLLAR AND 4 THREADED HOLE(S) |
| Phase | SINGLE INPUT |
| Shaft Diameter | 0.125 INCHES NOMINAL SINGLE END IN |
| Frequency in Hertz | 400.0 OUTPUT |
| Current Type | AC INPUT |
| Calibration Speed in RPM | 1000.0 |
| Mounting Method | FACE |
| Cooling Method | NONVENTILATED |
| Features Provided | VERTICAL MOUNTING POSITION AND HORIZONTAL MOUNTING POSITION |
| Mounting Facility Circle Diameter | 0.812 INCHES IN |
| Maximum Operating Altitude Rating | 8000.0 FEET FT |
| Connection Type and Voltage Rating in Volts | 115.0 LINE TO NEUTRAL SINGLE INPUT |
| Calibration Voltage Output Type in Volts | 0.5 AC |
| Torque Rating and Type | 0.5 INCH-OUNCES STALLED IN |
| Length of Shaft From Housing | 0.626 INCHES SINGLE END IN |
| Control Field Voltage Type and Rating in Volts | 115.0 AC |
| Enclosure Feature | TOTALLY ENCLOSED |
| Power Rating | 3.500 WATTS OUTPUT |
| Shaft End Characteristic | A1 SINGLE STYLE SINGLE END |
| Excitor Type | SEPARATELY EXCITED |
| Terminal Type and Quantity | 10 WIRE LEAD |
| Rotor Speed Rating in RPM | 5800.0 SINGLE NO LOAD AND 3300.0 SINGLE FULL LOAD |
| Temp Rating | -40.0 OPERATING CELSIUS AND 85.0 OPERATING CELSIUS |
| Inclosure Specification | COMMERCIAL |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Unit of Issue | EA |
| Part Number | Manufacturer |
|---|---|
| N-250321 | Neotech, Inc. (USA) |
| 11G4G-AB1-E1GH31 PRIMARY | General Dynamics Motion Control Llc (USA) |
| 11-85-11 PRIMARY | Arc Systems Inc (USA) |
| Reference | Meaning |
|---|---|
| G11-10012 AND 811MTG8-4 | 5/9 Secondary reference Waltham Clock Co Inc Feedback Controls Div |
| 9191867 | 5/1 Secondary reference Us Army Aviation and Missile Command |
| U-209300 | 5/2 Secondary reference U.S. Government activity |
| 10300 | 5/9 Secondary reference Waltham Clock Co Inc Feedback Controls Div |
NSN 6105-00-446-2971 is a Motor-Tachometer Generator, manufactured by General Dynamics Motion Control Llc, classified under FSC 6105, Motors, Electrical. Status: active.
NSN 6105-00-446-2971 has 3 manufacturer part numbers on file: N-250321 (Neotech, Inc.), 11G4G-AB1-E1GH31 (General Dynamics Motion Control Llc), 11-85-11 (Arc Systems Inc).
3 possible matches (shared part number, not a government interchangeability claim): 7025-01-111-3763, 5365-01-157-7479, 4810-01-420-1067. Verify interchangeability with system specifications before substitution.
Key specifications for 11G4G-AB1-E1GH31: Mounting Facility Type and Quantity: 1 CLAMP COLLAR AND 4 THREADED HOLE(S); Phase: SINGLE INPUT; Shaft Diameter: 0.125 INCHES NOMINAL SINGLE END IN; Frequency in Hertz: 400.0 OUTPUT. 24 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.