HEAT EXCHANGER,AIR TO AIR,AIRCRA. This part is cataloged in the U.S. Government catalog under NSN 1660-00-887-4348, 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
644856-3
NSN:1660-00-887-4348 FSC:1660 — Aircraft Air Conditioning, Heating, and Pressurizing Equipment CAGE:98897 — LOCKHEED MARTIN CORP (USA)
SPECIFICATIONS
Part Number
644856-3
NSN
1660-00-887-4348
COMPONENT DIAGRAM
OTHER ITEMS IN FSC 1660 — Aircraft Air Conditioning, Heating, and Pressurizing Equipment
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
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FREQUENTLY ASKED QUESTIONS
What is 644856-3?
644856-3 is a HEAT EXCHANGER,AIR TO AIR,AIRCRA.
What parts can replace 644856-3?
There is 1 known substitute for 644856-3: 174230-1. Substitute compatibility should be verified for your specific system.
What is the NSN for 644856-3?
644856-3 is cataloged in the U.S. Government catalog under NSN 1660-00-887-4348. This indicates validated use in U.S. government and defense supply chains.
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