PartsTable
Technical Data Sheet
PartsTable / MRO / A-43
A-43 ✓ 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 TELEPHONE,SECURE UNIT is a the manufacturer industrial component. Key specifications include end_item_identification: COMM SEC EQUIP. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5360-00-290-8912, 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→ A-43
NSN: 5360-00-290-8912
FSC: 5360
CAGE: 38056 — ASHCROFT INC DBA HEISE (USA)
SPECIFICATIONS
end_item_identificationCOMM SEC EQUIP
NSN5360-00-290-8912
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available TELEPHONE,SECURE UNIT TITLE COMPONENT PN A-43 MFR TELEPHONE,SECURE UNIT
KEY FEATURES
•
INSIDE DIAMETER: 0.750 INCHES NOMINAL IN
•
COIL HELIX DIRECTION: RIGHT-HAND
•
COIL QUANTITY: 9-3/8
•
SPRING DEFLECTION RATE: 155.000 POUNDS PER INCH NOMINAL LBS
•
SPRING FREE OUTSIDE DIAMETER: 1.063 INCHES NOMINAL IN
•
MATERIAL: STEEL OVERALL
•
STYLE DESIGNATOR: CYLINDRICAL
•
SPRING FREE LENGTH: 2.250 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
INSIDE DIAMETER0.750 INCHES NOMINAL IN
COIL HELIX DIRECTIONRIGHT-HAND
COIL QUANTITY9-3/8
SPRING DEFLECTION RATE155.000 POUNDS PER INCH NOMINAL LBS
SPRING FREE OUTSIDE DIAMETER1.063 INCHES NOMINAL IN
MATERIALSTEEL OVERALL
STYLE DESIGNATORCYLINDRICAL
SPRING FREE LENGTH2.250 INCHES NOMINAL IN
SURFACE TREATMENTCADMIUM OVERALL
END STYLESPRING END,SQUARED AND GROUND BOTH ENDS
VERIFIED SUBSTITUTES & CROSS-REFERENCES 15
A43Interchangeable
interchangeable cross-reference
interchangeable
A238028Interchangeable
interchangeable cross-reference
interchangeable
A42Interchangeable
interchangeable cross-reference
interchangeable
912032Interchangeable
interchangeable cross-reference
interchangeable
006466V043Interchangeable
interchangeable cross-reference
interchangeable
N9451Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is A-43?
A-43 is a TELEPHONE,SECURE UNIT. It is classified as a MRO (MRO_GENERAL).
What parts can replace A-43?
There are 15 known substitutes for A-43: A43, A238028, A42 and 12 more. Substitute compatibility should be verified for your specific system.
What is the NSN for A-43?
A-43 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5360-00-290-8912. 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