# NSN 6680-00-557-5963: Generator, Tachometer

NSN 6680-00-557-5963 (also written 6680005575963; NIIN 00-557-5963) is a generator, tachometer in Federal Supply Class 6680, Liquid and Gas Flow, Liquid Level, and Mechanical Motion Measuring Instruments. 8 manufacturer part numbers from 5 suppliers are on record. It was last purchased in Oct 2026.

## Identification

- NSN: 6680-00-557-5963 (6680005575963)
- NIIN: 00-557-5963 (005575963)
- Item name: GENERATOR,TACHOMETER
- Federal Supply Class: [FSC 6680 Liquid and Gas Flow, Liquid Level, and Mechanical Motion Measuring Instruments](https://nsnexplorer.com/fsc/6680/)
- Federal Supply Group: [FSG 66](https://nsnexplorer.com/group/66/)
- Acquisition method suffix code: AMSC R: the government owns neither the data nor the rights, and obtaining them is judged uneconomical. (observed 2026-11-01)
- Acquisition method code: 1

## Characteristics

| Code | Requirement | Reply |
| --- | --- | --- |
| CBBL | FEATURES PROVIDED | HORIZONTAL MOUNTING POSITION AND VERTICAL MOUNTING POSITION |
| AAJT | OVERALL HEIGHT | INCHES 5.000 |
| ABWV | SHAFT DIAMETER | SINGLE END INCHES NOMINAL 0.1880 |
| TTQY | TERMINAL TYPE AND QUANTITY | CONNECTOR, PLUG 1 |
| AAJU | OVERALL LENGTH | INCHES 4.750 |
| TMDN | TYPE/MODEL DESIGNATION | M-1200-C |
| CWCS | LENGTH OF SHAFT FROM HOUSING | SINGLE END INCHES 0.203 |
| AAJV | OVERALL WIDTH | INCHES 3.250 |
| CWGL | CURRENT RATING IN AMPS | INPUT SINGLE 0.060 |
| BKPC | CALIBRATION VOLTAGE OUTPUT TYPE IN VOLTS | DC 3.0 |
| AYHE | EXCITOR TYPE | SEPARATELY EXCITED |
| CWFX | ROTOR SPEED RATING IN RPM | LOW FULL LOAD 300.0 AND HIGH FULL LOAD 3000.0 |
| BFLQ | CALIBRATION SPEED IN RPM | 1000.0 |
| BFNG | KEY HEIGHT ABOVE SHAFT | SINGLE END INCHES NOMINAL 0.037 |
| AAPP | ELECTRICAL RESISTANCE | OHMS 10.0 |
| ABRR | KEYWAY WIDTH | SINGLE END INCHES NOMINAL 0.060 |
| BDJD | ACCURACY RANGE IN PERCENT | -0.5 TO 0.5 |
| ACDC | CURRENT TYPE | INPUT DC |
| AKCT | SHAFT ROTATION DIRECTION | SINGLE END CLOCKWISE OR COUNTERCLOCKWISE |
| AXGY | MOUNTING METHOD | SWIVEL NUT COUPLING |
| AXHR | MOUNTING FACILITY TYPE AND QUANTITY | THREADED COUPLING 1 |
| CWHZ | SHAFT END CHARACTERISTIC | SINGLE END SINGLE STYLE A30 |

## Part numbers

| Part number | CAGE | Supplier | Source |
| --- | --- | --- | --- |
| 16102787 | 82796 | COLTEC INDUSTRIES INC. DBA FAIRBANKS MORSE ENGINE DIV FAIRBANKS MORSE ENGINE | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| 16103787 | 82796 | COLTEC INDUSTRIES INC. DBA FAIRBANKS MORSE ENGINE DIV FAIRBANKS MORSE ENGINE | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| 173-614 | 27235 | HARDIE-TYNES CO., INC. | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| 5120762 | 72582 | ROLLS-ROYCE SOLUTIONS AMERICA INC DBA ROLLS-ROYCE SOLUTIONS AMERICA INC | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| M1200-C | 12763 | DYNALEC CORPORATION | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| M1200C-3 | 12763 | DYNALEC CORPORATION | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| ND2106A | 7PZX0 | FAIRBANKS MORSE, LLC | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| ND2106A | 82796 | COLTEC INDUSTRIES INC. DBA FAIRBANKS MORSE ENGINE DIV FAIRBANKS MORSE ENGINE | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |

## Contract awards

Newest first.

| Date | Award | Description | Recipient | Amount |
| --- | --- | --- | --- | --- |
| 2026-10-30 | [SPE4A126V0972](https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=6680005575963) | GENERATOR, TACHOMETER | DYNALEC CORPORATION | $13,240.00 |

## Sources

- DLA DIBBS RFQs for this NSN: https://www.dibbs.bsm.dla.mil/RFQ/RFQNsn.aspx?value=6680005575963&category=nsn
- DLA DIBBS awards for this NSN: https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=6680005575963
- AMSC record: https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/
- USAspending contract actions (each award above links to its record)
- All data is public U.S. government data; every row above links to its source record where one exists.

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