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A4539 ✓ 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 A4539 is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, style_designator: STRAIGHT FLUTE, thread_direction: RIGHT-HAND, thread_structure: REGULAR, starting_chamfer_type: PLUG, end_item_identification: RT1523BCU,PO SINCGARS. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4130-00-359-7050, 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
A4539
NSN: 4130-00-359-7050
FSC: 4130
CAGE: 41947 — MUELLER BRASS CO. (USA)
SPECIFICATIONS
materialSTEEL OVERALL
style_designatorSTRAIGHT FLUTE
thread_directionRIGHT-HAND
thread_structureREGULAR
starting_chamfer_typePLUG
end_item_identificationRT1523BCU,PO SINCGARS
thread_pitch_in_millimeters1.25
thread_size_and_series/type_designator9.0 MM ISO M MM
NSN4130-00-359-7050
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available A4539 TITLE COMPONENT PN A4539 MFR A4539
VERIFIED SUBSTITUTES & CROSS-REFERENCES 11
C389CInterchangeable
interchangeable cross-reference
interchangeable
A8277Interchangeable
interchangeable cross-reference
interchangeable
1737Interchangeable
interchangeable cross-reference
interchangeable
456670Interchangeable
interchangeable cross-reference
interchangeable
AW-5255Interchangeable
interchangeable cross-reference
interchangeable
MIL-PRF-26/3Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is A4539?
A4539 is a A4539.
What parts can replace A4539?
There are 11 known substitutes for A4539: C389C, A8277, 1737 and 8 more. Substitute compatibility should be verified for your specific system.
What is the NSN for A4539?
A4539 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4130-00-359-7050. 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