The Indicator,sight,liquid, cataloged under National Stock Number 6680-01-138-0398, 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 Clark-Reliance Llc. Government technical data includes 15 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 6680-01-138-0398 |
| Primary Part Number | TMS-7329-SK |
| Item Name | Indicator,sight,liquid |
| FSC / FSG | 6680 / 66 — Liquid and Gas Flow, Liquid Level, and Mechanical Motion Measuring Instruments |
| Manufacturer | Clark-Reliance Llc |
| Status | ACTIVE |
| Furnished Data | LIQUID LEVEL |
| Data Furnishing Method | CLEAR WINDOW |
| End Connection Type | UNABLE TO DECODE |
| Style Designator | GAGE VALVE |
| Features Provided | AUTOMATIC SHUTOFF AND DRAIN COCK |
| Distance Between Mounting Facility Centers | 46.000 INCHES NOMINAL IN |
| Thread Direction | UNABLE TO DECODE |
| Nominal Thread Size | UNABLE TO DECODE |
| Media for Which Designed | ANY ACCEPTABLE |
| Maximum Working Pressure | 190.0 POUNDS PER SQUARE INCH (PSI) LBS |
| Thread Quantity Per Inch | UNABLE TO DECODE |
| Material | COPPER ALLOY |
| Guard Rod Quantity | 4 |
| Thread Series Designator | UNABLE TO DECODE |
| Sight Diameter | 0.750 INCHES NOMINAL IN |
| 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 |
|---|---|
| TMS-7329-SK PRIMARY | Clark-Reliance Llc (USA) |
| Reference | Meaning |
|---|---|
| D2446 | 5/9 Secondary reference U.S. Government activity |
| T/HP | 5/9 Secondary reference U.S. Government activity |
| D2446-046 | 5/9 Secondary reference U.S. Government activity |
| 2410-046 | 5/9 Secondary reference U.S. Government activity |
NSN 6680-01-138-0398 is a Indicator,sight,liquid, manufactured by Clark-Reliance Llc, classified under FSC 6680, Liquid and Gas Flow, Liquid Level, and Mechanical Motion Measuring Instruments. Status: active.
NSN 6680-01-138-0398 has 1 manufacturer part number on file: TMS-7329-SK (Clark-Reliance Llc).
1 possible match (shared part number, not a government interchangeability claim): 4420-01-170-9851. Verify interchangeability with system specifications before substitution.
Key specifications for TMS-7329-SK: Furnished Data: LIQUID LEVEL; Data Furnishing Method: CLEAR WINDOW; End Connection Type: UNABLE TO DECODE; Style Designator: GAGE VALVE. 15 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.