The Switch,liquid Level, cataloged under National Stock Number 5930-01-107-7530, is classified within Federal Supply Class 5930 (Switches) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Madison Company. Government technical data includes 14 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5930-01-107-7530 |
| Primary Part Number | M3109 GROUP 1 |
| Item Name | Switch,liquid Level |
| FSC / FSG | 5930 / 59 — Switches |
| Manufacturer | Madison Company |
| Status | ACTIVE |
| Relay | NOT INCLUDED |
| Actuation Method | BUOYANCY |
| Phase | SINGLE LOCATION NOT OTHERWISE SPECIFIED |
| AC Voltage Rating | 440.0 VOLTS NOMINAL LOCATION NOT OTHERWISE SPECIFIED |
| Overall Diameter | 5.560 INCHES NOMINAL IN |
| Mounting Method | FLANGE |
| Mounting Position | VERTICAL |
| Float Quantity | 1 |
| Liquid Type for Which Designed | VARIOUS FUELS |
| Tank Insertion Length | 30.970 INCHES NOMINAL IN |
| Operating Temp Rating | 105.0 CELSIUS MAXIMUM DEGC |
| Mounting Dimensions | MTD BY SIX 0.560 IN. DIA HOLES EQUALLY SPACED ON A 4.440 IN. DIA BOLT CIRCLE IN |
| Frequency Rating | 60.0 HERTZ NOMINAL LOCATION NOT OTHERWISE SPECIFIED |
| Electrical Connection Type | CONNECTOR RECEPTACLE |
| 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 |
|---|---|
| M3109 GROUP 1 PRIMARY | Madison Company (USA) |
| Reference | Meaning |
|---|---|
| M3109 GR0UP 1 | C/1 Advisory reference — outside the item-of-supply concept Madison Company |
| M3109 | 3/1 Design control — primary reference Madison Company |
NSN 5930-01-107-7530 is a Switch,liquid Level, manufactured by Madison Company, classified under FSC 5930, Switches. Status: active.
NSN 5930-01-107-7530 has 1 manufacturer part number on file: M3109 GROUP 1 (Madison Company).
1 possible match (shared part number, not a government interchangeability claim): 6680-01-108-4699. Verify interchangeability with system specifications before substitution.
Key specifications for M3109 GROUP 1: Relay: NOT INCLUDED; Actuation Method: BUOYANCY; Phase: SINGLE LOCATION NOT OTHERWISE SPECIFIED; AC Voltage Rating: 440.0 VOLTS NOMINAL LOCATION NOT OTHERWISE SPECIFIED. 14 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.