The Indicator,sight,liquid, cataloged under National Stock Number 6680-01-020-1369, 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 Kaydon Custom Filtration Corporation. Government technical data includes 10 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 6680-01-020-1369 |
| Primary Part Number | 42M23 |
| Item Name | Indicator,sight,liquid |
| FSC / FSG | 6680 / 66 — Liquid and Gas Flow, Liquid Level, and Mechanical Motion Measuring Instruments |
| Manufacturer | Kaydon Custom Filtration Corporation |
| Status | ACTIVE |
| Furnished Data | LIQUID LEVEL |
| Data Furnishing Method | CLEAR WINDOW |
| Style Designator | GAGE VALVE |
| Distance Between Mounting Facility Centers | 8.250 INCHES NOMINAL IN |
| Thread Direction | UNABLE TO DECODE |
| Nominal Thread Size | UNABLE TO DECODE |
| Maximum Working Pressure | 150.0 POUNDS PER SQUARE INCH (PSI) LBS |
| Thread Quantity Per Inch | UNABLE TO DECODE |
| Material | ALUMINUM ALLOY |
| 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 |
| Part Number | Manufacturer |
|---|---|
| 42M23 PRIMARY | Kaydon Custom Filtration Corporation (USA) |
NSN 6680-01-020-1369 is a Indicator,sight,liquid, manufactured by Kaydon Custom Filtration Corporation, classified under FSC 6680, Liquid and Gas Flow, Liquid Level, and Mechanical Motion Measuring Instruments. Status: active.
NSN 6680-01-020-1369 has 1 manufacturer part number on file: 42M23 (Kaydon Custom Filtration Corporation).
Key specifications for 42M23: Furnished Data: LIQUID LEVEL; Data Furnishing Method: CLEAR WINDOW; Style Designator: GAGE VALVE; Distance Between Mounting Facility Centers: 8.250 INCHES NOMINAL IN. 10 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.