The Indicator,liquid Quantity, cataloged under National Stock Number 6680-01-558-4368, 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 The Electric Heater Co Dba Hubbell Electric Heater Co.. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Item Name | Indicator,liquid Quantity |
| FSC / FSG | 6680 — Liquid and Gas Flow, Liquid Level, and Mechanical Motion Measuring Instruments (FSG 66) |
| Manufacturers | The Electric Heater Co Dba Hubbell Electric Heater Co. (CAGE 19857) |
| Parameter | Value |
|---|---|
| NSN | 6680-01-558-4368 |
| Primary Part Number | X9M1-A11A-009 |
| Item Name | Indicator,liquid Quantity |
| FSC / FSG | 6680 / 66 — Liquid and Gas Flow, Liquid Level, and Mechanical Motion Measuring Instruments |
| Manufacturer | The Electric Heater Co Dba Hubbell Electric Heater Co. |
| 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 |
|---|---|
| X9M1-A11A-009 PRIMARY | The Electric Heater Co Dba Hubbell Electric Heater Co. (USA) |
| Reference | Meaning |
|---|---|
| 17756 PC 15 | 5/9 Secondary reference The Electric Heater Co Dba Hubbell Electric Heater Co. |
| X9D1-1221-009 | 5/9 Secondary reference U.S. Government activity |
| 17756 | 5/9 Secondary reference The Electric Heater Co Dba Hubbell Electric Heater Co. |
NSN 6680-01-558-4368 is a Indicator,liquid Quantity, manufactured by The Electric Heater Co Dba Hubbell Electric Heater Co., classified under FSC 6680, Liquid and Gas Flow, Liquid Level, and Mechanical Motion Measuring Instruments. Status: active.
NSN 6680-01-558-4368 has 1 manufacturer part number on file: X9M1-A11A-009 (The Electric Heater Co Dba Hubbell Electric Heater Co.).
2 possible matches (shared part number, not a government interchangeability claim): 5330-01-558-6038, 5330-01-558-6052. Verify interchangeability with system specifications before substitution.
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.