The Switch,thermostatic, cataloged under National Stock Number 5930-01-440-4956, is classified within Federal Supply Class 5930 (Switches) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Chromalox Inc Dba Chromalox Precision Heat and Control, Inc. Government technical data includes 2 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5930-01-440-4956 |
| Primary Part Number | 300-026603-001 |
| Item Name | Switch,thermostatic |
| FSC / FSG | 5930 / 59 — Switches |
| Manufacturer | Chromalox Inc Dba Chromalox Precision Heat and Control, Inc |
| Status | ACTIVE |
| Contact Action Stimulus | INCREASE |
| Contact Stimulus Rating | 285.00 DEACTUATION POINT NOMINAL DEGREES FAHRENHEIT |
| 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 |
|---|---|
| 300-026603-001 PRIMARY | Chromalox Inc Dba Chromalox Precision Heat and Control, Inc (USA) |
| 155-554790-002 REV 1 ITEM 6 | Chromalox Inc (USA) |
| Reference | Meaning |
|---|---|
| 155-554790-002 REV 1 ITEM 6 | C/1 Advisory reference — outside the item-of-supply concept Chromalox Inc Dba Chromalox Precision Heat and Control, Inc |
NSN 5930-01-440-4956 is a Switch,thermostatic, manufactured by Chromalox Inc Dba Chromalox Precision Heat and Control, Inc, classified under FSC 5930, Switches. Status: active.
NSN 5930-01-440-4956 has 2 manufacturer part numbers on file: 300-026603-001 (Chromalox Inc Dba Chromalox Precision Heat and Control, Inc), 155-554790-002 REV 1 ITEM 6 (Chromalox Inc).
Key specifications for 300-026603-001: Contact Action Stimulus: INCREASE; End Item Identification: IMMERSION HEATER 155-554790-002; Contact Stimulus Rating: 285.00 DEACTUATION POINT NOMINAL DEGREES FAHRENHEIT. 2 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.