The Switch,thermostatic, cataloged under National Stock Number 5930-01-012-3905, is classified within Federal Supply Class 5930 (Switches) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Ge Aviation Systems Llc. Government technical data includes 18 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5930-01-012-3905 |
| Primary Part Number | 40-617-837 |
| Item Name | Switch,thermostatic |
| FSC / FSG | 5930 / 59 — Switches |
| Manufacturer | Ge Aviation Systems Llc |
| Status | ACTIVE |
| Contact Action Stimulus | DECREASE |
| Terminal Type | TAB, SOLDER LUG |
| Overall Diameter | 0.875 INCHES NOMINAL IN |
| Contact Load Current Rating | 4.0 AMPERES RESISTIVE LOAD SECOND VOLTAGE |
| Contact Load Current Rating | 6.0 AMPERES RESISTIVE LOAD THIRD VOLTAGE |
| Contact Load Current Rating | 2.0 AMPERES RESISTIVE LOAD FIRST VOLTAGE |
| Mounting Method | CLAMP |
| Body Height | 0.286 INCHES MINIMUM AND 0.302 INCHES MAXIMUM IN |
| Style Designator | DISC |
| Temp Sensing Element Type | INTERNAL SENSOR |
| Features Provided | HERMETICALLY SEALED CASE |
| Nonpile-Up Contact Arrangement | 1 POLE, SINGLE THROW, NORMALLY OPEN, MOMENTARY ACTION |
| Media for Which Designed | GAS OR LIQUID |
| Contact Stimulus Rating | 33.00 ACTUATION POINT MINIMUM DEGREES FAHRENHEIT AND 43.00 ACTUATION POINT MAXIMUM DEGREES FAHRENHEIT AND 50.00 DEACTUATION POINT MINIMUM DEGREES FAHRENHEIT AND 66.00 DEACTUATION POINT MAXIMUM DEGREES FAHRENHEIT AND 20.00 DIFFERENTIAL POINT NOMINAL DEGREES FAHRENHEIT |
| Contact Adjustability | DEACTUATION POINT NOT ADJUSTABLE AND ACTUATION POINT NOT ADJUSTABLE |
| Contact Voltage Rating in Volts | 30.0 DC AT SEA LEVEL THIRD VOLTAGE |
| Contact Voltage Rating in Volts | 250.0 AC AT SEA LEVEL FIRST VOLTAGE |
| Contact Voltage Rating in Volts | 125.0 AC AT SEA LEVEL SECOND VOLTAGE |
| 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 |
|---|---|
| 40-617-837 PRIMARY | Ge Aviation Systems Llc (USA) |
| Reference | Meaning |
|---|---|
| C4344 (9770-68) | 5/9 Secondary reference U.S. Government activity |
| 40-617-837 | 3/9 Design control — primary reference Ge Aviation Systems Llc Dba Ge Aviation |
NSN 5930-01-012-3905 is a Switch,thermostatic, manufactured by Ge Aviation Systems Llc, classified under FSC 5930, Switches. Status: active.
NSN 5930-01-012-3905 has 1 manufacturer part number on file: 40-617-837 (Ge Aviation Systems Llc).
Key specifications for 40-617-837: Overall Height: 0.500 INCHES MAXIMUM IN; Contact Action Stimulus: DECREASE; Terminal Type: TAB, SOLDER LUG; Overall Diameter: 0.875 INCHES NOMINAL IN. 18 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.