The Transmitter,liquid Quantity, cataloged under National Stock Number 6680-01-101-6450, 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 Setra Systems, Inc. Dba Gems Sensors. Government technical data includes 10 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 6680-01-101-6450 |
| Primary Part Number | 56166 |
| Item Name | Transmitter,liquid Quantity |
| FSC / FSG | 6680 / 66 — Liquid and Gas Flow, Liquid Level, and Mechanical Motion Measuring Instruments |
| Manufacturer | Setra Systems, Inc. Dba Gems Sensors |
| Status | ACTIVE |
| Actuation Method | FLOAT |
| Attachment Feature Quantity | 2 |
| Terminal Quantity | 3 |
| Current Type | DC |
| Terminal Type | STUD |
| Electrical Connection Quantity | 1 |
| Electrical Connection Identifying Number | PART NO. 36468 |
| Mounting Method | BRACKET(S) |
| Connector Controlling Agency | ITT CANNON ELECTRIC |
| Voltage Rating | 10.0 VOLTS MINIMUM AND 12.0 VOLTS MAXIMUM |
| 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 |
|---|---|
| XM-36460-33-2700-W-H | Setra Systems, Inc. Dba Gems Sensors (USA) |
| 56166 PRIMARY | Setra Systems, Inc. Dba Gems Sensors (USA) |
NSN 6680-01-101-6450 is a Transmitter,liquid Quantity, manufactured by Setra Systems, Inc. Dba Gems Sensors, classified under FSC 6680, Liquid and Gas Flow, Liquid Level, and Mechanical Motion Measuring Instruments. Status: active.
NSN 6680-01-101-6450 has 2 manufacturer part numbers on file: XM-36460-33-2700-W-H (Setra Systems, Inc. Dba Gems Sensors), 56166 (Setra Systems, Inc. Dba Gems Sensors).
2 possible matches (shared part number, not a government interchangeability claim): 4930-01-491-4673, 5342-01-528-2668. Verify interchangeability with system specifications before substitution.
Key specifications for 56166: Actuation Method: FLOAT; Attachment Feature Quantity: 2; Terminal Quantity: 3; Current Type: DC. 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.