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Technical Data Sheet
PartsTable / MRO / NT4X43KA
NT4X43KA ✓ 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

MODIFICATION KIT,TELEPHONE EQUIP. Key specifications include material: STEEL OVERALL, thickness: 0.152 INCHES MINIMUM AND 0.160 INCHES MAXIMUM IN, lining_style: CLUTCH DISK, major_diameter: 5.469 INCHES MINIMUM AND 5.500 INCHES MAXIMUM IN, minor_diameter: 2.750 INCHES MINIMUM AND 2.781 INCHES MAXIMUM IN, overall_length: 139.37 MILLIMETERS NOMINAL MM. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5805-01-422-5920, 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→ NT4X43KA
NSN: 5805-01-422-5920
FSC: 5805
CAGE: 6U062 — NORTHERN TELECOM INC TELCO GROUP (USA)
SPECIFICATIONS
materialSTEEL OVERALL
thickness0.152 INCHES MINIMUM AND 0.160 INCHES MAXIMUM IN
lining_styleCLUTCH DISK
major_diameter5.469 INCHES MINIMUM AND 5.500 INCHES MAXIMUM IN
minor_diameter2.750 INCHES MINIMUM AND 2.781 INCHES MAXIMUM IN
overall_length139.37 MILLIMETERS NOMINAL MM
application_typeDRY
special_features1/4-18 PIPE THREAD CONNECTION; TOTAL LENGTH OF ADAPTER 1.58 INCHES; 9/16 HEX IN
attachment_methodRIVETED
features_providedRIGID FRICTION LINING
fabrication_methodWOVEN
hole_arrangement_styleSTAGGERED
NSN5805-01-422-5920
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available MODIFICATION KIT,TELEPHONE EQUIP TITLE COMPONENT PN NT4X43KA MFR MODIFICATION KIT,TELEP
VERIFIED SUBSTITUTES & CROSS-REFERENCES 14
193832812Interchangeable
interchangeable cross-reference
interchangeable
30182-4-4Interchangeable
interchangeable cross-reference
interchangeable
M-522Interchangeable
interchangeable cross-reference
interchangeable
M2684 1/4" BALL VALVEInterchangeable
interchangeable cross-reference
interchangeable
FMS518Interchangeable
interchangeable cross-reference
interchangeable
4A0521Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is NT4X43KA?
NT4X43KA is a MODIFICATION KIT,TELEPHONE EQUIP. It is classified as a MRO (MRO_GENERAL).
What parts can replace NT4X43KA?
There are 14 known substitutes for NT4X43KA: 193832812, 30182-4-4, M-522 and 11 more. Substitute compatibility should be verified for your specific system.
What is the NSN for NT4X43KA?
NT4X43KA is cataloged in the Federal Logistics Information System (FLIS) under NSN 5805-01-422-5920. 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