The Generator,tachometer, cataloged under National Stock Number 6680-00-560-0255, is classified within Federal Supply Class 6680 (Liquid and Gas Flow, Liquid Level, and Mechanical Motion Measuring Instruments) of the Instruments and Laboratory Equipment group. The manufacturer of record is General Electric Company. Government technical data includes 19 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 6680-00-560-0255 |
| Primary Part Number | 5BC46AB1498 |
| Item Name | Generator,tachometer |
| FSC / FSG | 6680 / 66 — Liquid and Gas Flow, Liquid Level, and Mechanical Motion Measuring Instruments |
| Manufacturer | General Electric Company |
| Status | ACTIVE |
| Keyway Depth | UNABLE TO DECODE |
| Mounting Facility Type and Quantity | 4 UNTHREADED HOLE(S) |
| Electrical Resistance | 2.4 OHMS |
| Shaft Diameter | UNABLE TO DECODE |
| Current Type | UNABLE TO DECODE |
| Calibration Speed in RPM | 1000.0 |
| Mounting Method | FIXED BASE |
| Accuracy Range in Percent | -5.0 TO 5.0 |
| Features Provided | HORIZONTAL MOUNTING POSITION AND VERTICAL MOUNTING POSITION |
| Calibration Voltage Output Type in Volts | 30.0 DC |
| Keyway Length | UNABLE TO DECODE |
| Nominal Center to Center Distance Between Mounting Facilities Parallel to Length | 3.000 INCHES IN |
| Keyway Width | UNABLE TO DECODE |
| Nominal Center to Center Distance Between Mounting Facilities Parallel to Width | 4.875 INCHES IN |
| Length of Shaft From Housing | UNABLE TO DECODE |
| Current Rating in Amps | UNABLE TO DECODE |
| Shaft End Characteristic | UNABLE TO DECODE |
| Terminal Type and Quantity | 2 WIRE LEAD |
| Rotor Speed Rating in RPM | 100.0 LOW FULL LOAD AND 8000.0 HIGH FULL LOAD |
| 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 |
|---|---|
| 5BC46AB1498 | General Electric Company (USA) |
| Reference | Meaning |
|---|---|
| 5BC46AB1498 | 3/2 Design control — primary reference U.S. Government activity |
NSN 6680-00-560-0255 is a Generator,tachometer, manufactured by General Electric Company, classified under FSC 6680, Liquid and Gas Flow, Liquid Level, and Mechanical Motion Measuring Instruments. Status: active.
NSN 6680-00-560-0255 has 1 manufacturer part number on file: 5BC46AB1498 (General Electric Company).
Key specifications for 5BC46AB1498: Keyway Depth: UNABLE TO DECODE; Mounting Facility Type and Quantity: 4 UNTHREADED HOLE(S); Electrical Resistance: 2.4 OHMS; Shaft Diameter: UNABLE TO DECODE. 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.