The Indicator,sight,liquid, cataloged under National Stock Number 6680-01-013-2780, 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. Government technical data includes 12 specifications, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 4 items share a part number with this NSN in the catalog (possible match — not a government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 | 6680-01-013-2780 |
| Item Name | Indicator,sight,liquid |
| FSC / FSG | 6680 / 66 — Liquid and Gas Flow, Liquid Level, and Mechanical Motion Measuring Instruments |
| Status | ACTIVE |
| Furnished Data | LIQUID LEVEL |
| Width Across Flats | 1.370 INCHES NOMINAL IN |
| Data Furnishing Method | CLEAR WINDOW |
| End Connection Type | UNABLE TO DECODE |
| Style Designator | BULLS EYE |
| Features Provided | REFLECTOR |
| Thread Direction | UNABLE TO DECODE |
| Nominal Thread Size | UNABLE TO DECODE |
| Media for Which Designed | OIL |
| Thread Quantity Per Inch | UNABLE TO DECODE |
| Material | STEEL |
| Thread Series Designator | UNABLE TO DECODE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| D301114 FIND NO 3 | C/1 Advisory reference — outside the item-of-supply concept Control Flow, Inc. Dba Control Flow Inc |
| 421-517-9002 | 5/2 Secondary reference U.S. Government activity |
| M34 | 3/2 Design control — primary reference U.S. Government activity |
NSN 6680-01-013-2780 is a Indicator,sight,liquid, classified under FSC 6680, Liquid and Gas Flow, Liquid Level, and Mechanical Motion Measuring Instruments. Status: active.
4 possible matches (shared part number, not a government interchangeability claim): 6240-01-078-1658, 5998-01-083-7076, 5840-01-432-0699. Verify interchangeability with system specifications before substitution.
Key specifications for 6680-01-013-2780: Furnished Data: LIQUID LEVEL; Width Across Flats: 1.370 INCHES NOMINAL IN; Data Furnishing Method: CLEAR WINDOW; End Connection Type: UNABLE TO DECODE. 12 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.