The Glass,liquid Sight Indicator,rou, cataloged under National Stock Number 6680-01-604-4071, 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 Hydac Corp. Government technical data includes 2 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 6680-01-604-4071 |
| Primary Part Number | FSA-254-2.1/T/12 |
| Item Name | Glass,liquid Sight Indicator,rou |
| FSC / FSG | 6680 / 66 — Liquid and Gas Flow, Liquid Level, and Mechanical Motion Measuring Instruments |
| Manufacturer | Hydac Corp |
| Status | ACTIVE |
| Window Length | 7.99 INCHES NOMINAL IN |
| Material | ALUMINUM ALLOY |
| 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 |
|---|---|
| FSA-254-2.1/T/12 PRIMARY | Hydac Corp (USA) |
| Reference | Meaning |
|---|---|
| 00700078 | 5/9 Secondary reference Berendsen, Inc. Dba Atlanta Sales |
NSN 6680-01-604-4071 is a Glass,liquid Sight Indicator,rou, manufactured by Hydac Corp, classified under FSC 6680, Liquid and Gas Flow, Liquid Level, and Mechanical Motion Measuring Instruments. Status: active.
NSN 6680-01-604-4071 has 1 manufacturer part number on file: FSA-254-2.1/T/12 (Hydac Corp).
Key specifications for FSA-254-2.1/T/12: Overall Length: 11.26 INCHES NOMINAL IN; Overall Width: 1.34 INCHES NOMINAL IN; Window Length: 7.99 INCHES NOMINAL IN; Material: ALUMINUM ALLOY. 2 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.