The Switch,thermostatic, cataloged under National Stock Number 5930-01-412-5154, is classified within Federal Supply Class 5930 (Switches) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Honeywell International Inc. Dba Honeywell Div Sensing and Control. Government technical data includes 8 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5930-01-412-5154 |
| Primary Part Number | 3MS1-21-3212L70C |
| Item Name | Switch,thermostatic |
| FSC / FSG | 5930 / 59 — Switches |
| Manufacturer | Honeywell International Inc. Dba Honeywell Div Sensing and Control |
| Status | ACTIVE |
| Contact Action Stimulus | DECREASE |
| Terminal Type | TAB, SOLDER LUG |
| Mounting Method | BRACKET(S) AND SLOT AND UNTHREADED HOLE(S) |
| Style Designator | DISC W/FLANGE |
| Temp Sensing Element Type | INTERNAL SENSOR |
| Nonpile-Up Contact Arrangement | 1 POLE, SINGLE THROW, NORMALLY CLOSED, MOMENTARY ACTION |
| Media for Which Designed | GAS OR LIQUID |
| Contact Adjustability | ACTUATION POINT NOT ADJUSTABLE AND DEACTUATION POINT NOT 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 |
|---|---|
| 3MS1-21-3212L70C PRIMARY | Honeywell International Inc. Dba Honeywell Div Sensing and Control (USA) |
| M43600-9073-04 | Racal Instruments Wireless Solutions Ltd, an Aeroflex Company (GBR) |
| 3MS1-21-3212L70C | Elmwood Sensors Ltd (part of Invensys Plc) (GBR) |
| Reference | Meaning |
|---|---|
| 3MS1-21-3212L70C | 5/9 Secondary reference M L Components Ltd |
NSN 5930-01-412-5154 is a Switch,thermostatic, manufactured by Honeywell International Inc. Dba Honeywell Div Sensing and Control, classified under FSC 5930, Switches. Status: active.
NSN 5930-01-412-5154 has 3 manufacturer part numbers on file: 3MS1-21-3212L70C (Honeywell International Inc. Dba Honeywell Div Sensing and Control), M43600-9073-04 (Racal Instruments Wireless Solutions Ltd, an Aeroflex Company), 3MS1-21-3212L70C (Elmwood Sensors Ltd (part of Invensys Plc)).
Key specifications for 3MS1-21-3212L70C: Contact Action Stimulus: DECREASE; Terminal Type: TAB, SOLDER LUG; Mounting Method: BRACKET(S) AND SLOT AND UNTHREADED HOLE(S); Style Designator: DISC W/FLANGE. 8 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.