The Indicator,sight,liquid, cataloged under National Stock Number 6680-01-436-3636, 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 3 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 6680-01-436-3636 |
| Primary Part Number | CMS1802 |
| 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 FLOW |
| Data Furnishing Method | CLEAR WINDOW |
| Maximum Working Pressure | 150.0 POUNDS PER SQUARE INCH (PSI) LBS |
| 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 |
|---|---|
| CMS1802 | Clark-Reliance Llc (USA) |
| Reference | Meaning |
|---|---|
| TBC-18-B 960-F 2IN | 3/2 Design control — primary reference U.S. Government activity |
NSN 6680-01-436-3636 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 6680-01-436-3636 has 1 manufacturer part number on file: CMS1802 (Clark-Reliance Llc).
Key specifications for CMS1802: Furnished Data: LIQUID FLOW; Data Furnishing Method: CLEAR WINDOW; Special Features: 2IN; FULL VIEW SIGHT FLOW INDICATOR;ROTARY TYPE IN; End Item Identification: WS)NIMITZ CLASS CVN. 3 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.