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MX1781U — Technical Data Sheet

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JOINT ELECTRONICS TYPE DESIGNATION SYSTEM · 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 THERMOCOUPLE,HEATING ELEMENT is a JOINT ELECTRONICS TYPE DESIGNATION SYSTEM industrial component. Key specifications include MATERIAL: BRASS METER CASE, CASE TYPE: CYLINDRICAL, OVERALL LENGTH: 2.875 INCHES NOMINAL IN, OVERALL DIAMETER: 0.875 INCHES NOMINAL IN, MOUNTING LOCATION: OUTSIDE METER CASE. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 6685-00-290-5823, 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
MX1781U
NSN: 6685-00-290-5823
FSC: 6685
CAGE: 80058 — JOINT ELECTRONICS TYPE DESIGNATION SYSTEM (USA)
SPECIFICATIONS
MATERIALBRASS METER CASE
CASE TYPECYLINDRICAL
OVERALL LENGTH2.875 INCHES NOMINAL IN
OVERALL DIAMETER0.875 INCHES NOMINAL IN
MOUNTING LOCATIONOUTSIDE METER CASE
NSN6685-00-290-5823
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR MFR: JOINT ELECTRONICS TYPE DESIGNATION SYSTEM THERMOCOUPLE,HEATING ELEMENT TITLE COMPONENT PN MX1781U MFR JOINT ELECTRONICS TYPE DESIGNATION SYSTEM THERMOCOUPLE,HEATING E
KEY FEATURES
•
MATERIAL: BRASS METER CASE
•
CASE TYPE: CYLINDRICAL
•
OVERALL DIAMETER: 0.875 INCHES NOMINAL IN
•
MOUNTING LOCATION: OUTSIDE METER CASE
TECHNICAL CHARACTERISTICS (FLIS)
MATERIALBRASS METER CASE
CASE TYPECYLINDRICAL
OVERALL DIAMETER0.875 INCHES NOMINAL IN
MOUNTING LOCATIONOUTSIDE METER CASE
OVERALL LENGTH2.875 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 19
120-98-00005Interchangeable
interchangeable cross-reference
interchangeable
19343-3Interchangeable
interchangeable cross-reference
interchangeable
401-0193-1Interchangeable
interchangeable cross-reference
interchangeable
544-7848-004Interchangeable
interchangeable cross-reference
interchangeable
AM-2193/ARNInterchangeable
interchangeable cross-reference
interchangeable
701-009Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is MX1781U?
MX1781U is a THERMOCOUPLE,HEATING ELEMENT manufactured by JOINT ELECTRONICS TYPE DESIGNATION SYSTEM.
What parts can replace MX1781U?
There are 19 known substitutes for MX1781U: 120-98-00005, 19343-3, 401-0193-1 and 16 more. Substitute compatibility should be verified for your specific system.
Is MX1781U still available?
MX1781U is currently cancelled.
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PartsTable Design LLC · partstable.com
Last verified: September 2026