The Float,switch,liquid Level, cataloged under National Stock Number 6680-01-643-2890, 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 Mcmaster-Carr Supply Co. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Item Name | Float,switch,liquid Level |
| FSC / FSG | 6680 — Liquid and Gas Flow, Liquid Level, and Mechanical Motion Measuring Instruments (FSG 66) |
| Manufacturers | Mcmaster-Carr Supply Co (CAGE 3A054) |
| Parameter | Value |
|---|---|
| NSN | 6680-01-643-2890 |
| Primary Part Number | 3355A37 |
| Item Name | Float,switch,liquid Level |
| FSC / FSG | 6680 / 66 — Liquid and Gas Flow, Liquid Level, and Mechanical Motion Measuring Instruments |
| Manufacturer | Mcmaster-Carr Supply Co |
| Status | ACTIVE |
| 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 |
|---|---|
| 3355A37 | Mcmaster-Carr Supply Co (USA) |
| Reference | Meaning |
|---|---|
| 0025-00-3109 | 3/9 Design control — primary reference Cpi Satcom & Antenna Technologies Inc. |
| 07011P3109 | 7/2 Vendor item drawing reference Marine Corps Systems Command Div Marine Corps Systems Command Technical Data Repository Customer Service |
NSN 6680-01-643-2890 is a Float,switch,liquid Level, manufactured by Mcmaster-Carr Supply Co, classified under FSC 6680, Liquid and Gas Flow, Liquid Level, and Mechanical Motion Measuring Instruments. Status: active.
NSN 6680-01-643-2890 has 1 manufacturer part number on file: 3355A37 (Mcmaster-Carr Supply Co).
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.