The Switch,liquid Level, cataloged under National Stock Number 5930-00-321-0255, is classified within Federal Supply Class 5930 (Switches) of the Electrical and Electronic Equipment Components group. Government technical data includes 20 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5930-00-321-0255 |
| Item Name | Switch,liquid Level |
| FSC / FSG | 5930 / 59 — Switches |
| Status | ACTIVE |
| Relay | NOT INCLUDED |
| Actuation Method | BUOYANCY |
| FSC Application Data | ACFT FUEL SYSTEM |
| Power Cable Length | 56.000 INCHES NOMINAL IN |
| Aircraft Fuel Grade Specific Gravity Rating | 0.845 AT 15.6/15.6 DEG MAX SPGR |
| Current Rating at Maximum Rated Voltage | 500.0 MILLIAMPERES NOMINAL LOAD |
| DC Voltage Rating | 28.0 VOLTS NOMINAL FIRST OPERATING POWER RQMT |
| Mounting Method | THREAD |
| Contact Arrangement | SPST,NORMALLY OPEN |
| Mounting Position | VERTICAL |
| Float Effective Travel | 0.375 INCHES MINIMUM AND 0.613 INCHES MAXIMUM IN |
| Float Quantity | 1 |
| Liquid Type for Which Designed | AIRCRAFT FUEL |
| Tank Insertion Length | 2.812 INCHES MAXIMUM IN |
| Aircraft Fuel Grade Specification | MIL-T-5624G G |
| Aircraft Fuel Grade | GRADES JP-4,JP-5 |
| Operating Temp Rating | -45.0 FAHRENHEIT MINIMUM AND 160.0 FAHRENHEIT MAXIMUM DEGF |
| Mounting Dimensions | AN816-6D FITTING |
| Aircraft Fuel for Which Designed | SPECIFIC |
| Electrical Connection Type | CABLE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| E710040 | 7/2 Vendor item drawing reference Lockheed Martin Corporation Div Rotary and Mission Systems |
| F5591-7 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5930-00-321-0255 is a Switch,liquid Level, classified under FSC 5930, Switches. Status: active.
Key specifications for 5930-00-321-0255: Relay: NOT INCLUDED; Actuation Method: BUOYANCY; Overall Height: 3.375 INCHES NOMINAL IN; FSC Application Data: ACFT FUEL SYSTEM. 20 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.