The Switch,thermostatic, cataloged under National Stock Number 5930-01-030-1903, is classified within Federal Supply Class 5930 (Switches) of the Electrical and Electronic Equipment Components group. The manufacturer of record is W.w. Grainger, Inc. Div Government Sales Division. 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. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5930-01-030-1903 |
| Primary Part Number | 2E251 |
| Item Name | Switch,thermostatic |
| FSC / FSG | 5930 / 59 — Switches |
| Manufacturer | W.w. Grainger, Inc. Div Government Sales Division |
| Status | ACTIVE |
| Contact Action Stimulus | INCREASE |
| Terminal Type | TAB W/SCREW |
| Mounting Facility Pattern | TWO POSITION IN-LINE |
| Contact Load Current Rating | 12.0 AMPERES INDUCTIVE LOAD SECOND VOLTAGE |
| Contact Load Current Rating | 6.0 AMPERES INDUCTIVE LOAD FIRST VOLTAGE |
| Mounting Method | BRACKET(S) |
| Body Width | 1.500 INCHES NOMINAL IN |
| Body Height | 1.000 INCHES NOMINAL IN |
| Temp Sensing Element Type | INTERNAL SENSOR |
| Features Provided | INTERNALLY GROUNDED |
| Distance Between Mounting Facility Centers | 1.625 INCHES NOMINAL IN |
| Nonpile-Up Contact Arrangement | 1 POLE, SINGLE THROW, NORMALLY CLOSED, MOMENTARY ACTION |
| Media for Which Designed | GAS OR LIQUID |
| Contact Stimulus Rating | 180.00 ACTUATION POINT NOMINAL DEGREES FAHRENHEIT AND 140.00 DEACTUATION POINT NOMINAL DEGREES FAHRENHEIT |
| Contact Adjustability | DEACTUATION POINT NOT ADJUSTABLE AND ACTUATION POINT NOT ADJUSTABLE |
| Contact Voltage Rating in Volts | 240.0 AC AT SEA LEVEL FIRST VOLTAGE |
| Contact Voltage Rating in Volts | 120.0 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 |
|---|---|
| 2E251 PRIMARY | W.w. Grainger, Inc. Div Government Sales Division (USA) |
NSN 5930-01-030-1903 is a Switch,thermostatic, manufactured by W.w. Grainger, Inc. Div Government Sales Division, classified under FSC 5930, Switches. Status: active.
NSN 5930-01-030-1903 has 1 manufacturer part number on file: 2E251 (W.w. Grainger, Inc. Div Government Sales Division).
2 possible matches (shared part number, not a government interchangeability claim): 5930-01-191-2899, 3950-01-233-5134. Verify interchangeability with system specifications before substitution.
Key specifications for 2E251: Contact Action Stimulus: INCREASE; Terminal Type: TAB W/SCREW; Mounting Facility Pattern: TWO POSITION IN-LINE; Contact Load Current Rating: 12.0 AMPERES INDUCTIVE LOAD SECOND VOLTAGE. 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.
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.