The Glass,liquid Sight Indicator,fla, cataloged under National Stock Number 6680-01-107-4451, 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 Naval Sea Systems Command. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 6680-01-107-4451 |
| Primary Part Number | 2585509 |
| Item Name | Glass,liquid Sight Indicator,fla |
| FSC / FSG | 6680 / 66 — Liquid and Gas Flow, Liquid Level, and Mechanical Motion Measuring Instruments |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Design Type | PLAIN |
| Overall Diameter | 0.975 INCHES NOMINAL IN |
| Overall Thickness | 0.280 INCHES MINIMUM AND 0.288 INCHES MAXIMUM 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 |
|---|---|
| 2585509 | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| 2585509 | 3/2 Design control — primary reference U.S. Government activity |
NSN 6680-01-107-4451 is a Glass,liquid Sight Indicator,fla, manufactured by Naval Sea Systems Command, classified under FSC 6680, Liquid and Gas Flow, Liquid Level, and Mechanical Motion Measuring Instruments. Status: active.
NSN 6680-01-107-4451 has 1 manufacturer part number on file: 2585509 (Naval Sea Systems Command).
Key specifications for 2585509: Design Type: PLAIN; Overall Diameter: 0.975 INCHES NOMINAL IN; Overall Thickness: 0.280 INCHES MINIMUM AND 0.288 INCHES MAXIMUM 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.