The Switch,liquid Level, cataloged under National Stock Number 5930-01-277-6077, is classified within Federal Supply Class 5930 (Switches) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Northrop Grumman Systems Corporation. Government technical data includes 17 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5930-01-277-6077 |
| Primary Part Number | GS535AU4 |
| Item Name | Switch,liquid Level |
| FSC / FSG | 5930 / 59 — Switches |
| Manufacturer | Northrop Grumman Systems Corporation |
| Status | ACTIVE |
| Relay | NOT INCLUDED |
| Actuation Method | BUOYANCY |
| Power Cable Length | 24.000 INCHES NOMINAL IN |
| Overall Diameter | 1.600 INCHES MAXIMUM IN |
| Current Rating at Maximum Rated Voltage | 3.0 AMPERES NOMINAL LOAD |
| DC Voltage Rating | 35.0 VOLTS MAXIMUM LOCATION NOT OTHERWISE SPECIFIED |
| Mounting Method | THREAD |
| Contact Arrangement | SINGLE POLE,SINGLE THROW,NORMALLY OPEN OR CLOSED DEPENDING ON MTG POS |
| Mounting Position | VERTICAL |
| Float and Contact Positions | FLOAT UP, CONTACTS CLOSED AND FLOAT UP, CONTACTS OPEN |
| Float Effective Travel | 1.050 INCHES MINIMUM AND 1.250 INCHES MAXIMUM IN |
| Float Quantity | 1 |
| Liquid Type for Which Designed | VARIOUS FUELS |
| Tank Insertion Length | 2.810 INCHES NOMINAL IN |
| Operating Temp Rating | -54.0 CELSIUS MINIMUM AND 93.0 CELSIUS MAXIMUM DEGC |
| Mounting Dimensions | THREAD MTD PER MS33656E4 |
| Electrical Connection Type | CABLE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL B — Remove Demilitarization Key Points |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| GS535AU4 PRIMARY | Northrop Grumman Systems Corporation (USA) |
| Reference | Meaning |
|---|---|
| 80019-201 | 5/9 Secondary reference Xar Industries Inc |
NSN 5930-01-277-6077 is a Switch,liquid Level, manufactured by Northrop Grumman Systems Corporation, classified under FSC 5930, Switches. Status: active.
NSN 5930-01-277-6077 has 1 manufacturer part number on file: GS535AU4 (Northrop Grumman Systems Corporation).
Key specifications for GS535AU4: Relay: NOT INCLUDED; Actuation Method: BUOYANCY; Power Cable Length: 24.000 INCHES NOMINAL IN; Overall Diameter: 1.600 INCHES MAXIMUM IN. 17 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.
NSN 5930-01-277-6077 has DEMIL Code B. Demilitarization may be required before disposal or transfer to non-military entities.
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.