PartsTable
Technical Data Sheet
MX-257 ✓ Verified by PartsTable
· COMPONENT
WHAT YOU NEED TO KNOW
Verify manufacturer and server generation compatibility Check if Option PN or Spare PN — same part, different channel
Confirm exact part number — similar PNs may be different parts
PRODUCT OVERVIEW

The SWITCH,THERMOSTATIC is a the manufacturer industrial component. Key specifications include body_diameter: 0.610 INCHES MINIMUM AND 0.640 INCHES MAXIMUM IN, terminal_type: TAB, SOLDER LUG, overall_height: 0.172 INCHES MINIMUM AND 0.202 INCHES MAXIMUM IN, overall_length: 0.820 INCHES NOMINAL IN, mounting_method: BRACKET(S) AND UNTHREADED HOLE(S), style_designator: DISC. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5930-00-054-6757, 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
MX-257
NSN: 5930-00-054-6757
FSC: 5930
CAGE: 93410 — ESSEX GROUP INC CONTROLS DIV LEXINGTON PLANT
SPECIFICATIONS
body_diameter0.610 INCHES MINIMUM AND 0.640 INCHES MAXIMUM IN
terminal_typeTAB, SOLDER LUG
overall_height0.172 INCHES MINIMUM AND 0.202 INCHES MAXIMUM IN
overall_length0.820 INCHES NOMINAL IN
mounting_methodBRACKET(S) AND UNTHREADED HOLE(S)
style_designatorDISC
frequency_in_hertz60.0 SINGLE VOLTAGE
contact_adjustabilityACTUATION POINT NOT ADJUSTABLE
operating_temp_rating55.0 CELSIUS MINIMUM AND 125.0 CELSIUS MAXIMUM DEGC
contact_action_stimulusINCREASE
contact_stimulus_rating35.00 ACTUATION POINT NOMINAL DEGREES FAHRENHEIT
media_for_which_designedGAS
NSN5930-00-054-6757
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available SWITCH,THERMOSTATIC TITLE COMPONENT PN MX-257 MFR SWITCH,THERMOSTATIC
KEY FEATURES
STYLE DESIGNATOR: DISC
CONTACT ADJUSTABILITY: ACTUATION POINT NOT ADJUSTABLE
MOUNTING FACILITY PATTERN: TWO POSITION IN-LINE
CONTACT VOLTAGE RATING IN VOLTS: 500.0 AC AT SEA LEVEL SINGLE VOLTAGE
CONTACT LOAD CURRENT RATING: 2.0 AMPERES RESISTIVE LOAD SINGLE VOLTAGE
FREQUENCY IN HERTZ: 60.0 SINGLE VOLTAGE
MEDIA FOR WHICH DESIGNED: GAS
CONTACT STIMULUS RATING: 35.00 ACTUATION POINT NOMINAL DEGREES FAHRENHEIT
TECHNICAL CHARACTERISTICS (FLIS)
STYLE DESIGNATORDISC
CONTACT ADJUSTABILITYACTUATION POINT NOT ADJUSTABLE
MOUNTING FACILITY PATTERNTWO POSITION IN-LINE
CONTACT VOLTAGE RATING IN VOLTS500.0 AC AT SEA LEVEL SINGLE VOLTAGE
CONTACT LOAD CURRENT RATING2.0 AMPERES RESISTIVE LOAD SINGLE VOLTAGE
FREQUENCY IN HERTZ60.0 SINGLE VOLTAGE
MEDIA FOR WHICH DESIGNEDGAS
CONTACT STIMULUS RATING35.00 ACTUATION POINT NOMINAL DEGREES FAHRENHEIT
OPERATING TEMP RATING55.0 CELSIUS MINIMUM AND 125.0 CELSIUS MAXIMUM DEGC
CONTACT ACTION STIMULUSINCREASE
VERIFIED SUBSTITUTES & CROSS-REFERENCES 7
MX12Interchangeable
interchangeable cross-reference
interchangeable
5B5939Interchangeable
interchangeable cross-reference
interchangeable
21675Interchangeable
interchangeable cross-reference
interchangeable
436275Interchangeable
interchangeable cross-reference
interchangeable
433657Interchangeable
interchangeable cross-reference
interchangeable
436257Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is MX-257?
MX-257 is a SWITCH,THERMOSTATIC.
What parts can replace MX-257?
There are 7 known substitutes for MX-257: MX12, 5B5939, 21675 and 4 more. Substitute compatibility should be verified for your specific system.
Is MX-257 still available?
MX-257 is currently cancelled.
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