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Technical Data Sheet
PartsTable / MRO / A81-3
A81-3 ✓ Verified by PartsTable
— · MRO · MRO_GENERAL
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 INTERCOMMUNICATION STATION is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, body_height: 0.337 INCHES NOMINAL IN, usage_design: INDOOR, body_diameter: 0.625 INCHES NOMINAL IN, terminal_type: TAB, SOLDER LUG, alignment_type: RIGID. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5930-00-013-1081, 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→ A81-3
NSN: 5930-00-013-1081
FSC: 5930
CAGE: 93410 — ESSEX GROUP INC CONTROLS DIV LEXINGTON PLANT
SPECIFICATIONS
materialSTEEL OVERALL
body_height0.337 INCHES NOMINAL IN
usage_designINDOOR
body_diameter0.625 INCHES NOMINAL IN
terminal_typeTAB, SOLDER LUG
alignment_typeRIGID
overall_height0.337 INCHES NOMINAL IN
overall_length1.188 INCHES NOMINAL IN
surface_finishGROUND
mounting_methodBRACKET(S) AND UNTHREADED HOLE(S)
special_featuresBANDED OD
style_designatorDISC W/FLANGE
NSN5930-00-013-1081
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available INTERCOMMUNICATION STATION TITLE COMPONENT PN A81-3 MFR INTERCOMMUNICATION STA
KEY FEATURES
•
BODY HEIGHT: 0.337 INCHES NOMINAL IN
•
MOUNTING FACILITY PATTERN: TWO POSITION IN-LINE
•
DISTANCE BETWEEN MOUNTING FACILITY CENTERS: 0.938 INCHES NOMINAL IN
•
TEMP SENSING ELEMENT TYPE: INTERNAL SENSOR
•
CONTACT LOAD CURRENT RATING: 5.0 AMPERES RESISTIVE LOAD FIRST VOLTAGE
•
CONTACT ACTION STIMULUS: INCREASE
TECHNICAL CHARACTERISTICS (FLIS)
BODY HEIGHT0.337 INCHES NOMINAL IN
MOUNTING FACILITY PATTERNTWO POSITION IN-LINE
DISTANCE BETWEEN MOUNTING FACILITY CENTERS0.938 INCHES NOMINAL IN
TEMP SENSING ELEMENT TYPEINTERNAL SENSOR
OVERALL LENGTH1.188 INCHES NOMINAL IN
CONTACT LOAD CURRENT RATING5.0 AMPERES RESISTIVE LOAD FIRST VOLTAGE
CONTACT ACTION STIMULUSINCREASE
CONTACT LOAD CURRENT RATING13.5 AMPERES RESISTIVE LOAD SECOND VOLTAGE
BODY DIAMETER0.625 INCHES NOMINAL IN
PRECIOUS MATERIALSILVER
VERIFIED SUBSTITUTES & CROSS-REFERENCES 5
CTD48Interchangeable
interchangeable cross-reference
interchangeable
602219Interchangeable
interchangeable cross-reference
interchangeable
1503Interchangeable
interchangeable cross-reference
interchangeable
C2104A1C18Interchangeable
interchangeable cross-reference
interchangeable
A81-3Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is A81-3?
A81-3 is a INTERCOMMUNICATION STATION. It is classified as a MRO (MRO_GENERAL).
What parts can replace A81-3?
There are 5 known substitutes for A81-3: CTD48, 602219, 1503 and 2 more. Substitute compatibility should be verified for your specific system.
What is the NSN for A81-3?
A81-3 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5930-00-013-1081. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026