The Indicator,liquid Quantity, cataloged under National Stock Number 6680-01-199-3172, 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 Carrier Corp. 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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.
| Item Name | Indicator,liquid Quantity |
| FSC / FSG | 6680 — Liquid and Gas Flow, Liquid Level, and Mechanical Motion Measuring Instruments (FSG 66) |
| Manufacturers | Carrier Corp (CAGE 10855) |
| Parameter | Value |
|---|---|
| NSN | 6680-01-199-3172 |
| Primary Part Number | 509-8553 |
| Item Name | Indicator,liquid Quantity |
| FSC / FSG | 6680 / 66 — Liquid and Gas Flow, Liquid Level, and Mechanical Motion Measuring Instruments |
| Manufacturer | Carrier Corp |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Part Number | Manufacturer |
|---|---|
| 509-8553 PRIMARY | Carrier Corp (USA) |
| Reference | Meaning |
|---|---|
| KM43BP-104 | 5/9 Secondary reference Carrier Corp |
| 438-3 | 5/9 Secondary reference Carrier Corp |
NSN 6680-01-199-3172 is a Indicator,liquid Quantity, manufactured by Carrier Corp, classified under FSC 6680, Liquid and Gas Flow, Liquid Level, and Mechanical Motion Measuring Instruments. Status: active.
NSN 6680-01-199-3172 has 1 manufacturer part number on file: 509-8553 (Carrier Corp).
1 possible match (shared part number, not a government interchangeability claim): 5310-01-680-5919. 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.