The Tachometer, cataloged under National Stock Number 6680-01-143-9078, 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 Solar Turbines Incorporated Dba Solar Turbines Incorporated. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 6680-01-143-9078 |
| Primary Part Number | 906781C1 |
| Item Name | Tachometer |
| FSC / FSG | 6680 / 66 — Liquid and Gas Flow, Liquid Level, and Mechanical Motion Measuring Instruments |
| Manufacturer | Solar Turbines Incorporated Dba Solar Turbines Incorporated |
| Status | ACTIVE |
| 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 |
|---|---|
| 906781C1 PRIMARY | Solar Turbines Incorporated Dba Solar Turbines Incorporated (USA) |
| Reference | Meaning |
|---|---|
| 906781C1 | 5/9 Secondary reference Rtx Corporation Div Pratt & Whitney |
| 906781 | 5/1 Secondary reference Rtx Corporation Div Pratt & Whitney |
NSN 6680-01-143-9078 is a Tachometer, manufactured by Solar Turbines Incorporated Dba Solar Turbines Incorporated, classified under FSC 6680, Liquid and Gas Flow, Liquid Level, and Mechanical Motion Measuring Instruments. Status: active.
NSN 6680-01-143-9078 has 1 manufacturer part number on file: 906781C1 (Solar Turbines Incorporated Dba Solar Turbines Incorporated).
1 possible match (shared part number, not a government interchangeability claim): 3010-01-656-0032. Verify interchangeability with system specifications before substitution.
Key specifications for 906781C1: End Item Identification: 4920-01-121-0605. 0 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.