The Indicator,sight,liquid, cataloged under National Stock Number 6680-01-221-3719, 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 8 specifications, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 6680-01-221-3719 |
| Item Name | Indicator,sight,liquid |
| FSC / FSG | 6680 / 66 — Liquid and Gas Flow, Liquid Level, and Mechanical Motion Measuring Instruments |
| Status | ACTIVE |
| End Connection Type | UNABLE TO DECODE |
| Criticality Code Justification | ZZZY |
| Style Designator | RECTANGULAR |
| Maximum Temp Rating | 160.0 FAHRENHEIT DEGF |
| Media for Which Designed | ANY ACCEPTABLE |
| Maximum Working Pressure | 200.0 POUNDS PER SQUARE INCH (PSI) LBS |
| Material | COPPER ALLOY |
| Reference Number Differentiating Characteristics | MATERIAL WILL BE IN ACCORDANCE WITH SHIPS PARTS CONTROL CENTER ACTIVITY HX QUALITY CONTROL,MANUFACTURING AND TESTING SPECIFICATIONS |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL F — Mutilate — Cut |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | C |
| Reference | Meaning |
|---|---|
| 245-4363032ITEM52 | 5/2 Secondary reference U.S. Government activity |
| E-57-0 | 3/9 Design control — primary reference Ernst Flow Industries |
| CAT.95-A | 5/9 Secondary reference Ernst Flow Industries |
NSN 6680-01-221-3719 is a Indicator,sight,liquid, classified under FSC 6680, Liquid and Gas Flow, Liquid Level, and Mechanical Motion Measuring Instruments. Status: active.
Key specifications for 6680-01-221-3719: End Connection Type: UNABLE TO DECODE; Criticality Code Justification: ZZZY; Style Designator: RECTANGULAR; Overall Length: 6.750 INCHES NOMINAL IN. 8 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.
NSN 6680-01-221-3719 has DEMIL Code F. Demilitarization may be required before disposal or transfer to non-military entities.
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.