The Tachometer,electronic, cataloged under National Stock Number 6680-01-266-7285, 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 Dynalec Corporation. Government technical data includes 5 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 6680-01-266-7285 |
| Primary Part Number | PK111 |
| Item Name | Tachometer,electronic |
| FSC / FSG | 6680 / 66 — Liquid and Gas Flow, Liquid Level, and Mechanical Motion Measuring Instruments |
| Manufacturer | Dynalec Corporation |
| Status | ACTIVE |
| Current Type | DC |
| Case Design | PANEL |
| Dial Illumination | PROVIDED |
| Voltage in Volts | 5.0 |
| Scale Measurement Unit | REVOLUTIONS PER MINUTE |
| 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 |
|---|---|
| PK111 PRIMARY | Dynalec Corporation (USA) |
| Reference | Meaning |
|---|---|
| D425 | 5/9 Secondary reference The Electric Tachometer Corp. |
| 511L330AA PIECE 1 | 5/9 Secondary reference General Electric Co Naval and Drive Turbine Systems Dept |
| 134B821AC-1 | 5/9 Secondary reference General Electric Co Naval and Drive Turbine Systems Dept |
| D425 | 5/9 Secondary reference Dynalec Corporation |
NSN 6680-01-266-7285 is a Tachometer,electronic, manufactured by Dynalec Corporation, classified under FSC 6680, Liquid and Gas Flow, Liquid Level, and Mechanical Motion Measuring Instruments. Status: active.
NSN 6680-01-266-7285 has 1 manufacturer part number on file: PK111 (Dynalec Corporation).
1 possible match (shared part number, not a government interchangeability claim): 5961-01-552-7738. Verify interchangeability with system specifications before substitution.
Key specifications for PK111: Overall Height: 2.750 INCHES NOMINAL IN; Current Type: DC; Case Design: PANEL; Dial Illumination: PROVIDED. 5 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.