The Switch,thermostatic, cataloged under National Stock Number 5930-00-472-7784, is classified within Federal Supply Class 5930 (Switches) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Westinghouse Electric Corp. Government technical data includes 20 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5930-00-472-7784 |
| Primary Part Number | 54B6721H05 |
| Item Name | Switch,thermostatic |
| FSC / FSG | 5930 / 59 — Switches |
| Manufacturer | Westinghouse Electric Corp |
| Status | ACTIVE |
| Body Diameter | 0.495 INCHES MINIMUM AND 0.505 INCHES MAXIMUM IN |
| Frequency in Hertz | 60.0 SINGLE VOLTAGE |
| Contact Action Stimulus | INCREASE |
| Terminal Type | WIRE LEAD |
| Mounting Facility Pattern | THREE POSITION CIRCULAR |
| Overall Diameter | 1.500 INCHES NOMINAL IN |
| Mounting Facility Circle Radius | 0.500 INCHES NOMINAL IN |
| Contact Load Current Rating | 2.5 AMPERES RESISTIVE LOAD SINGLE VOLTAGE |
| Mounting Method | FLANGE |
| Contact Adjustment Range | +147.00 TO 157.00 ACTUATION POINT DEGREES FAHRENHEIT AND +137.00 TO 147.00 DEACTUATION POINT DEGREES FAHRENHEIT |
| Style Designator | CYLINDRICAL W/FLANGE |
| Temp Sensing Element Type | INTERNAL SENSOR |
| Contact Adjustment Type | EXTERNAL DEACTUATION POINT SCREW AND EXTERNAL ACTUATION POINT SCREW |
| Body Length | 1.786 INCHES MINIMUM AND 2.126 INCHES MAXIMUM IN |
| Operating Temp Rating | -100.0 FAHRENHEIT MINIMUM AND 400.0 FAHRENHEIT MAXIMUM DEGF |
| Nonpile-Up Contact Arrangement | 1 POLE, SINGLE THROW, NORMALLY OPEN, MOMENTARY ACTION |
| Media for Which Designed | GAS OR LIQUID |
| Contact Stimulus Rating | 149.00 ACTUATION POINT NOMINAL DEGREES FAHRENHEIT AND 139.00 DEACTUATION POINT NOMINAL DEGREES FAHRENHEIT |
| Contact Adjustability | DEACTUATION POINT ADJUSTABLE, PRESET AND ACTUATION POINT ADJUSTABLE, PRESET |
| Contact Voltage Rating in Volts | 220.0 AC AT SEA LEVEL SINGLE 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 |
|---|---|
| 54B6721H05 | Westinghouse Electric Corp (USA) |
| Reference | Meaning |
|---|---|
| VC9044 | 5/2 Secondary reference U.S. Government activity |
| 54B6721H05 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5930-00-472-7784 is a Switch,thermostatic, manufactured by Westinghouse Electric Corp, classified under FSC 5930, Switches. Status: active.
NSN 5930-00-472-7784 has 1 manufacturer part number on file: 54B6721H05 (Westinghouse Electric Corp).
Key specifications for 54B6721H05: Body Diameter: 0.495 INCHES MINIMUM AND 0.505 INCHES MAXIMUM IN; Frequency in Hertz: 60.0 SINGLE VOLTAGE; Contact Action Stimulus: INCREASE; Terminal Type: WIRE LEAD. 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.