The Switch,liquid Level, cataloged under National Stock Number 5930-01-664-3635, is classified within Federal Supply Class 5930 (Switches) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Setra Systems, Inc. Dba Gems Sensors. Government technical data includes 4 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5930-01-664-3635 |
| Primary Part Number | W1105937 |
| Item Name | Switch,liquid Level |
| FSC / FSG | 5930 / 59 — Switches |
| Manufacturer | Setra Systems, Inc. Dba Gems Sensors |
| Status | ACTIVE |
| Actuation Method | BUOYANCY |
| Overall Diameter | 1.88 INCHES NOMINAL IN |
| Float Quantity | 2 |
| Liquid Type for Which Designed | HYDRAULIC FLUID |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| W1105937 PRIMARY | Setra Systems, Inc. Dba Gems Sensors (USA) |
| Reference | Meaning |
|---|---|
| LS-800-1-BR-BN-SPST-20-GR1-2 | 5/1 Secondary reference Setra Systems, Inc. Dba Gems Sensors |
| 122538 | 5/9 Secondary reference Setra Systems, Inc. Dba Gems Sensors |
| 3988AS9811-1 | 7/2 Vendor item drawing reference Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier |
NSN 5930-01-664-3635 is a Switch,liquid Level, manufactured by Setra Systems, Inc. Dba Gems Sensors, classified under FSC 5930, Switches. Status: active.
NSN 5930-01-664-3635 has 1 manufacturer part number on file: W1105937 (Setra Systems, Inc. Dba Gems Sensors).
Key specifications for W1105937: Actuation Method: BUOYANCY; Overall Diameter: 1.88 INCHES NOMINAL IN; Overall Length: 18.0 INCHES NOMINAL IN; Float Quantity: 2. 4 specifications are documented in the U.S. Government catalog.
Possible hazard — SDS may be required (DLA HMIC P). 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.