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4564 ✓ 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

COUPLER,DIRECT CURRENT BLOCKING. Key specifications include material: PLASTIC, unit_type: COAXIAL LINE, body_width: 2.187 INCHES MINIMUM AND 2.312 INCHES MAXIMUM IN, body_height: 1.594 INCHES NOMINAL IN, body_length: 2.532 INCHES NOMINAL IN, current_type: DC. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4320-00-450-1621, 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
4564
NSN: 4320-00-450-1621
FSC: 4320
CAGE: 86090 — EATON CORPORATION DBA AIRFRAME DIV FUEL & MOTION CONTROL SYSTEMS (USA)
SPECIFICATIONS
materialPLASTIC
unit_typeCOAXIAL LINE
body_width2.187 INCHES MINIMUM AND 2.312 INCHES MAXIMUM IN
body_height1.594 INCHES NOMINAL IN
body_length2.532 INCHES NOMINAL IN
current_typeDC
handle_length250.0 MILLIMETERS NOMINAL MM
inclosure_typeFULLY INCLOSED
overall_height1.750 INCHES NOMINAL IN
overall_length1.540 INCHES MAXIMUM IN
voltage_rating150.0 VOLTS MAXIMUM
mounting_methodTHREADED HOLE(S) SINGLE GROUP
NSN4320-00-450-1621
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available COUPLER,DIRECT CURRENT BLOCKING TITLE COMPONENT PN 4564 MFR COUPLER,DIRECT CURRENT
KEY FEATURES
•
GENERAL CHARACTERISTICS ITEM DESCRIPTION: CRES
TECHNICAL CHARACTERISTICS (FLIS)
END ITEM IDENTIFICATION4320-00-236-9130
GENERAL CHARACTERISTICS ITEM DESCRIPTIONCRES
VERIFIED SUBSTITUTES & CROSS-REFERENCES 14
7703PInterchangeable
interchangeable cross-reference
interchangeable
2401151Interchangeable
interchangeable cross-reference
interchangeable
P745AXInterchangeable
interchangeable cross-reference
interchangeable
RYG9175839Interchangeable
interchangeable cross-reference
interchangeable
HY2718Interchangeable
interchangeable cross-reference
interchangeable
9175839Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 4564?
4564 is a COUPLER,DIRECT CURRENT BLOCKING.
What parts can replace 4564?
There are 14 known substitutes for 4564: 7703P, 2401151, P745AX and 11 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 4564?
4564 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4320-00-450-1621. 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