The Indicator,electrical Tachometer, cataloged under National Stock Number 6680-01-309-9581, 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 W. & O. Supply, Inc. Dba Emi Div Emi. Government technical data includes 1 specification, 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. 3 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 6680-01-309-9581 |
| Primary Part Number | ST300 |
| Item Name | Indicator,electrical Tachometer |
| FSC / FSG | 6680 / 66 — Liquid and Gas Flow, Liquid Level, and Mechanical Motion Measuring Instruments |
| Manufacturer | W. & O. Supply, Inc. Dba Emi Div Emi |
| Status | ACTIVE |
| Scale Range | +0.1 TO 35000.0 REVOLUTIONS PER MINUTE SINGLE INDICATOR SINGLE SCALE |
| 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 |
|---|---|
| ST300 PRIMARY | W. & O. Supply, Inc. Dba Emi Div Emi (USA) |
NSN 6680-01-309-9581 is a Indicator,electrical Tachometer, manufactured by W. & O. Supply, Inc. Dba Emi Div Emi, classified under FSC 6680, Liquid and Gas Flow, Liquid Level, and Mechanical Motion Measuring Instruments. Status: active.
NSN 6680-01-309-9581 has 1 manufacturer part number on file: ST300 (W. & O. Supply, Inc. Dba Emi Div Emi).
3 possible matches (shared part number, not a government interchangeability claim): 6675-01-563-3889, 5975-01-670-6205, 6630-01-685-1283. Verify interchangeability with system specifications before substitution.
Key specifications for ST300: Scale Range: +0.1 TO 35000.0 REVOLUTIONS PER MINUTE SINGLE INDICATOR SINGLE SCALE; Special Features: ILLUMINOUS. 1 specification is 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.