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Technical Data Sheet
PartsTable / COMPONENT / 643143-4
643143-4 ✓ 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 SPACER,RING is a the manufacturer industrial component. Key specifications include depth: 2.030 INCHES NOMINAL IN, shape: RECTANGULAR, width: 3.750 INCHES NOMINAL IN, length: 4.500 INCHES NOMINAL IN, material: STEEL CORROSION RESISTING, design_type: WALL. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5365-00-235-2740, 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
643143-4
NSN: 5365-00-235-2740
FSC: 5365
CAGE: 96214 — RAYTHEON COMPANY DBA RAYTHEON (USA)
SPECIFICATIONS
depth2.030 INCHES NOMINAL IN
shapeRECTANGULAR
width3.750 INCHES NOMINAL IN
length4.500 INCHES NOMINAL IN
materialSTEEL CORROSION RESISTING
design_typeWALL
special_featuresTRAY EQUIPPED WITH 1 CIGARETTE REST
fsc_application_dataAIRCRAFT ACCESSORIES
NSN5365-00-235-2740
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available SPACER,RING TITLE COMPONENT PN 643143-4 MFR SPACER,RING
KEY FEATURES
•
OVERALL THICKNESS: 0.045 INCHES NOMINAL IN
•
OUTSIDE DIAMETER: 6.675 INCHES NOMINAL IN
•
INSIDE DIAMETER: 5.620 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
OVERALL THICKNESS0.045 INCHES NOMINAL IN
OUTSIDE DIAMETER6.675 INCHES NOMINAL IN
INSIDE DIAMETER5.620 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 3
21614-4Interchangeable
interchangeable cross-reference
interchangeable
643143-4Interchangeable
interchangeable cross-reference
interchangeable
1614-4Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 643143-4?
643143-4 is a SPACER,RING.
What parts can replace 643143-4?
There are 3 known substitutes for 643143-4: 21614-4, 643143-4, 1614-4. Substitute compatibility should be verified for your specific system.
What is the NSN for 643143-4?
643143-4 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5365-00-235-2740. 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