The Switch,thermostatic, cataloged under National Stock Number 5930-01-159-9923, is classified within Federal Supply Class 5930 (Switches) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Johnson Controls Navy Systems, Llc. Government technical data includes 10 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5930-01-159-9923 |
| Primary Part Number | 025-20433 |
| Item Name | Switch,thermostatic |
| FSC / FSG | 5930 / 59 — Switches |
| Manufacturer | Johnson Controls Navy Systems, Llc |
| Status | ACTIVE |
| Contact Action Stimulus | INCREASE |
| Bulb Length | 3.000 INCHES NOMINAL IN |
| Bulb Diameter | 0.375 INCHES NOMINAL IN |
| Contact Adjustment Range | +25.00 TO 90.00 ACTUATION POINT DEGREES FAHRENHEIT AND +25.00 TO 90.00 DEACTUATION POINT DEGREES FAHRENHEIT |
| Temp Sensing Element Type | CAPILLARY TUBE-BULB |
| Features Provided | ELECTRICAL ACCESS PORT |
| Capillary Tube Length | 120.0 INCHES NOMINAL IN |
| Nonpile-Up Contact Arrangement | 1 POLE, DOUBLE THROW, ONE POSITION MOMENTARY |
| Media for Which Designed | GAS OR LIQUID |
| Contact Adjustability | DEACTUATION POINT ADJUSTABLE AND ACTUATION POINT ADJUSTABLE |
| 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 |
|---|---|
| 4B1L42A10AB | Detroit Switch Inc Dba Detroit Switch Inc (USA) |
| 025-20433 PRIMARY | Johnson Controls Navy Systems, Llc (USA) |
| Reference | Meaning |
|---|---|
| 4B1L42A10ABU | C/1 Advisory reference — outside the item-of-supply concept Detroit Switch Inc Dba Detroit Switch Inc |
| 025-20433 | 5/9 Secondary reference Detroit Switch Inc Dba Detroit Switch Inc |
NSN 5930-01-159-9923 is a Switch,thermostatic, manufactured by Johnson Controls Navy Systems, Llc, classified under FSC 5930, Switches. Status: active.
NSN 5930-01-159-9923 has 2 manufacturer part numbers on file: 4B1L42A10AB (Detroit Switch Inc Dba Detroit Switch Inc), 025-20433 (Johnson Controls Navy Systems, Llc).
Key specifications for 025-20433: Contact Action Stimulus: INCREASE; Bulb Length: 3.000 INCHES NOMINAL IN; Bulb Diameter: 0.375 INCHES NOMINAL IN; Contact Adjustment Range: +25.00 TO 90.00 ACTUATION POINT DEGREES FAHRENHEIT AND +25.00 TO 90.00 DEACTUATION POINT DEGREES FAHRENHEIT. 10 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.