The Switch,thermostatic, cataloged under National Stock Number 5930-00-583-6642, is classified within Federal Supply Class 5930 (Switches) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Lockheed Martin Corporation Div Rms - Mitchel Field. Government technical data includes 12 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 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 | 5930-00-583-6642 |
| Primary Part Number | 748221 |
| Item Name | Switch,thermostatic |
| FSC / FSG | 5930 / 59 — Switches |
| Manufacturer | Lockheed Martin Corporation Div Rms - Mitchel Field |
| Status | ACTIVE |
| Contact Action Stimulus | INCREASE |
| Terminal Type | TAB, SOLDER LUG |
| Overall Diameter | 0.656 INCHES NOMINAL IN |
| Contact Load Current Rating | 2.0 AMPERES RESISTIVE LOAD FIRST VOLTAGE |
| Contact Load Current Rating | 5.0 AMPERES RESISTIVE LOAD SECOND VOLTAGE |
| Mounting Method | BRACKET(S) |
| Temp Sensing Element Type | INTERNAL SENSOR |
| Nonpile-Up Contact Arrangement | 1 POLE, SINGLE THROW, NORMALLY OPEN, MOMENTARY ACTION |
| Contact Stimulus Rating | 30.00 DIFFERENTIAL POINT NOMINAL DEGREES FAHRENHEIT AND 40.00 ACTUATION POINT NOMINAL DEGREES FAHRENHEIT |
| Contact Adjustability | ACTUATION POINT NOT ADJUSTABLE |
| Contact Voltage Rating in Volts | 28.0 DC AT SEA LEVEL SECOND VOLTAGE |
| Contact Voltage Rating in Volts | 115.0 AC AT SEA LEVEL FIRST 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 |
|---|---|
| 748221 PRIMARY | Lockheed Martin Corporation Div Rms - Mitchel Field (USA) |
NSN 5930-00-583-6642 is a Switch,thermostatic, manufactured by Lockheed Martin Corporation Div Rms - Mitchel Field, classified under FSC 5930, Switches. Status: active.
NSN 5930-00-583-6642 has 1 manufacturer part number on file: 748221 (Lockheed Martin Corporation Div Rms - Mitchel Field).
1 possible match (shared part number, not a government interchangeability claim): 5310-01-602-5428. Verify interchangeability with system specifications before substitution.
Key specifications for 748221: Contact Action Stimulus: INCREASE; Terminal Type: TAB, SOLDER LUG; Overall Diameter: 0.656 INCHES NOMINAL IN; Contact Load Current Rating: 2.0 AMPERES RESISTIVE LOAD FIRST VOLTAGE. 12 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.