The Switch,thermostatic, cataloged under National Stock Number 5930-01-233-0660, is classified within Federal Supply Class 5930 (Switches) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Star Manufacturing International Inc. Dba Lang Manufacturing Company. Government technical data includes 11 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 5930-01-233-0660 |
| Primary Part Number | 30402-21 |
| Item Name | Switch,thermostatic |
| FSC / FSG | 5930 / 59 — Switches |
| Manufacturer | Star Manufacturing International Inc. Dba Lang Manufacturing Company |
| Status | ACTIVE |
| Terminal Type | TAB W/SCREW |
| Mounting Facility Pattern | TWO POSITION IN-LINE |
| Bulb Length | 12.750 INCHES NOMINAL IN |
| Bulb Diameter | 0.078 INCHES NOMINAL IN |
| Mounting Method | THREADED HOLE(S) |
| Temp Sensing Element Type | CAPILLARY TUBE-BULB |
| Contact Adjustment Type | EXTERNAL ACTUATION POINT SHAFT |
| Distance Between Mounting Facility Centers | 1.750 INCHES NOMINAL IN |
| Contact Adjustability | ACTUATION POINT ADJUSTABLE |
| Contact Voltage Rating in Volts | 277.0 AC AT SEA LEVEL SECOND VOLTAGE |
| Contact Voltage Rating in Volts | 120.0 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 |
|---|---|
| 30402-21 PRIMARY | Star Manufacturing International Inc. Dba Lang Manufacturing Company (USA) |
| Reference | Meaning |
|---|---|
| KX-291-48 | 5/1 Secondary reference Robertshaw Controls Co New Stanton Div |
NSN 5930-01-233-0660 is a Switch,thermostatic, manufactured by Star Manufacturing International Inc. Dba Lang Manufacturing Company, classified under FSC 5930, Switches. Status: active.
NSN 5930-01-233-0660 has 1 manufacturer part number on file: 30402-21 (Star Manufacturing International Inc. Dba Lang Manufacturing Company).
1 possible match (shared part number, not a government interchangeability claim): 5331-01-433-1202. Verify interchangeability with system specifications before substitution.
Key specifications for 30402-21: Terminal Type: TAB W/SCREW; Mounting Facility Pattern: TWO POSITION IN-LINE; Bulb Length: 12.750 INCHES NOMINAL IN; Bulb Diameter: 0.078 INCHES NOMINAL IN. 11 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.