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3040221 — SWITCH,THERMOSTATIC

✓ Government record, cited
— · MRO · MRO_GENERAL
PRODUCT OVERVIEW

3040221: SWITCH,THERMOSTATIC.

The SWITCH,THERMOSTATIC is a the manufacturer industrial component. Key specifications include bulb_length: 12.750 INCHES NOMINAL IN, bulb_diameter: 0.078 INCHES NOMINAL IN, terminal_type: TAB W/SCREW, mounting_method: THREADED HOLE(S), contact_adjustability: ACTUATION POINT ADJUSTABLE, contact_adjustment_type: EXTERNAL ACTUATION POINT SHAFT. This part is cataloged in the U.S.

Government catalog under NSN 5930-01-233-0660, indicating validated use in U.S. government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels.

Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
MRO→ MRO_GENERAL→ 3040221
NSN: 5930-01-233-0660
NIINs: 012330660, 014331202
FSC: 5930 — Switches
CAGE: 34931 — STAR MANUFACTURING INTERNATIONAL INC. DBA LANG MANUFACTURING COMPANY (USA)
SPECIFICATIONS
bulb_length12.750 INCHES NOMINAL IN
bulb_diameter0.078 INCHES NOMINAL IN
terminal_typeTAB W/SCREW
mounting_methodTHREADED HOLE(S)
contact_adjustabilityACTUATION POINT ADJUSTABLE
contact_adjustment_typeEXTERNAL ACTUATION POINT SHAFT
mounting_facility_patternTWO POSITION IN-LINE
temp_sensing_element_typeCAPILLARY TUBE-BULB
contact_voltage_rating_in_volts277.0 AC AT SEA LEVEL SECOND VOLTAGE
distance_between_mounting_facility_centers1.750 INCHES NOMINAL IN
NSN5930-01-233-0660
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available SWITCH,THERMOSTATIC TITLE COMPONENT PN 3040221 MFR SWITCH,THERMOSTATIC
KEY FEATURES
•
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
TECHNICAL CHARACTERISTICS
TERMINAL TYPETAB W/SCREW
MOUNTING FACILITY PATTERNTWO POSITION IN-LINE
BULB LENGTH12.750 INCHES NOMINAL IN
BULB DIAMETER0.078 INCHES NOMINAL IN
MOUNTING METHODTHREADED HOLE(S)
TEMP SENSING ELEMENT TYPECAPILLARY TUBE-BULB
CONTACT ADJUSTMENT TYPEEXTERNAL ACTUATION POINT SHAFT
DISTANCE BETWEEN MOUNTING FACILITY CENTERS1.750 INCHES NOMINAL IN
CONTACT ADJUSTABILITYACTUATION POINT ADJUSTABLE
CONTACT VOLTAGE RATING IN VOLTS277.0 AC AT SEA LEVEL SECOND VOLTAGE
SUBSTITUTES & CROSS-REFERENCES 1
KX-291-48Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 3040221?
3040221 is a SWITCH,THERMOSTATIC. It is classified as a MRO (MRO_GENERAL).
What parts can replace 3040221?
There is 1 known substitute for 3040221: KX-291-48. Substitute compatibility should be verified for your specific system.
What is the NSN for 3040221?
3040221 is cataloged in the U.S. Government catalog under NSN 5930-01-233-0660. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.