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21390-1 — SWITCH,THERMOSTATIC

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

21390-1: SWITCH,THERMOSTATIC.

The SWITCH,THERMOSTATIC is a the manufacturer industrial component. Key specifications include body_height: 0.290 INCHES MAXIMUM IN, thread_class: 2A ALL THREADED STUD A, terminal_type: TAB, SOLDER LUG, thread_length: 0.500 INCHES NOMINAL ALL THREADED STUD IN, overall_height: 1.095 INCHES MAXIMUM IN, mounting_method: THREADED STUD(S). This part is cataloged in the U.S.

Government catalog under NSN 5930-01-009-5674, 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→ 21390-1
NSN: 5930-01-009-5674
NIINs: 010095674, 010953765
FSC: 5930 — Switches
CAGE: 00638 — TRIO LABORATORIES INC (USA)
SPECIFICATIONS
body_height0.290 INCHES MAXIMUM IN
thread_class2A ALL THREADED STUD A
terminal_typeTAB, SOLDER LUG
thread_length0.500 INCHES NOMINAL ALL THREADED STUD IN
overall_height1.095 INCHES MAXIMUM IN
mounting_methodTHREADED STUD(S)
overall_diameter0.605 INCHES MAXIMUM IN
style_designatorDISC
features_providedHERMETICALLY SEALED CASE
frequency_in_hertz60.0 FIRST VOLTAGE
nominal_thread_size0.138 INCHES ALL THREADED STUD IN
contact_adjustabilityDEACTUATION POINT NOT ADJUSTABLE AND ACTUATION POINT NOT ADJUSTABLE
NSN5930-01-009-5674
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available SWITCH,THERMOSTATIC TITLE COMPONENT PN 21390-1 MFR SWITCH,THERMOSTATIC
KEY FEATURES
•
FREQUENCY IN HERTZ: 60.0 FIRST VOLTAGE
•
CONTACT ACTION STIMULUS: INCREASE
•
TERMINAL TYPE: TAB, SOLDER LUG
•
OVERALL DIAMETER: 0.605 INCHES MAXIMUM IN
•
CONTACT LOAD CURRENT RATING: 6.0 AMPERES RESISTIVE LOAD FIRST VOLTAGE
•
MOUNTING METHOD: THREADED STUD(S)
TECHNICAL CHARACTERISTICS
OVERALL HEIGHT1.095 INCHES MAXIMUM IN
FREQUENCY IN HERTZ60.0 FIRST VOLTAGE
CONTACT ACTION STIMULUSINCREASE
TERMINAL TYPETAB, SOLDER LUG
OVERALL DIAMETER0.605 INCHES MAXIMUM IN
CONTACT LOAD CURRENT RATING6.0 AMPERES RESISTIVE LOAD FIRST VOLTAGE
CONTACT LOAD CURRENT RATING6.0 AMPERES RESISTIVE LOAD SECOND VOLTAGE
MOUNTING METHODTHREADED STUD(S)
THREAD LENGTH0.500 INCHES NOMINAL ALL THREADED STUD IN
BODY HEIGHT0.290 INCHES MAXIMUM IN
SUBSTITUTES & CROSS-REFERENCES 1
3100-43-30Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Terminal item — no further procurement; issued until stock is exhaustedNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 21390-1?
21390-1 is a SWITCH,THERMOSTATIC. It is classified as a MRO (MRO_GENERAL).
What parts can replace 21390-1?
There is 1 known substitute for 21390-1: 3100-43-30. Substitute compatibility should be verified for your specific system.
What is the NSN for 21390-1?
21390-1 is cataloged in the U.S. Government catalog under NSN 5930-01-009-5674. 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.