The Glass,liquid Sight Indicator,fla, cataloged under National Stock Number 6680-00-673-3404, 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 Textron Aviation Inc. Government technical data includes 5 specifications, 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 6680-00-673-3404 |
| Primary Part Number | 4017518-1 |
| Item Name | Glass,liquid Sight Indicator,fla |
| FSC / FSG | 6680 / 66 — Liquid and Gas Flow, Liquid Level, and Mechanical Motion Measuring Instruments |
| Manufacturer | Textron Aviation Inc |
| Status | ACTIVE |
| Design Type | PLAIN |
| Overall Diameter | 0.790 INCHES NOMINAL IN |
| Overall Thickness | 0.300 INCHES NOMINAL IN |
| Mica Shield | NOT PROVIDED |
| Gasket | NOT INCLUDED |
| 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 |
|---|---|
| 4017518-1 PRIMARY | Textron Aviation Inc (USA) |
| Reference | Meaning |
|---|---|
| 4017518-1 | 3/9 Design control — primary reference Cessna Aircraft Company Dba Textron Aviation |
NSN 6680-00-673-3404 is a Glass,liquid Sight Indicator,fla, manufactured by Textron Aviation Inc, classified under FSC 6680, Liquid and Gas Flow, Liquid Level, and Mechanical Motion Measuring Instruments. Status: active.
NSN 6680-00-673-3404 has 1 manufacturer part number on file: 4017518-1 (Textron Aviation Inc).
Key specifications for 4017518-1: Design Type: PLAIN; Overall Diameter: 0.790 INCHES NOMINAL IN; Overall Thickness: 0.300 INCHES NOMINAL IN; Mica Shield: NOT PROVIDED. 5 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.