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Technical Data Sheet
PartsTable / COMPONENT / 644799-1
644799-1 ✓ 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 TUBE ASSEMBLY,BOUNDARY is a the manufacturer industrial component. Key specifications include general_characteristics_item_description: CRES,MIL-S-6721,2.500 IN. OD,BOTH ENDS FLANGED IN.

This product is currently in active production with full OEM support. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 1560-00-606-0514, 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
644799-1
NSN: 1560-00-606-0514
FSC: 1560
CAGE: 98897 — LOCKHEED MARTIN CORP (USA)
SPECIFICATIONS
general_characteristics_item_descriptionCRES,MIL-S-6721,2.500 IN. OD,BOTH ENDS FLANGED IN
NSN1560-00-606-0514
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available TUBE ASSEMBLY,BOUNDARY TITLE COMPONENT PN 644799-1 MFR TUBE ASSEMBLY,BOUNDARY
KEY FEATURES
•
GENERAL CHARACTERISTICS ITEM DESCRIPTION: CRES,MIL-S-6721,2.500 IN. OD,BOTH ENDS FLANGED IN
TECHNICAL CHARACTERISTICS (FLIS)
GENERAL CHARACTERISTICS ITEM DESCRIPTIONCRES,MIL-S-6721,2.500 IN. OD,BOTH ENDS FLANGED IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 4
DE69582Interchangeable
interchangeable cross-reference
interchangeable
10445Interchangeable
interchangeable cross-reference
interchangeable
10444Interchangeable
interchangeable cross-reference
interchangeable
SM-D-886427Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 644799-1?
644799-1 is a TUBE ASSEMBLY,BOUNDARY.
What parts can replace 644799-1?
There are 4 known substitutes for 644799-1: DE69582, 10445, 10444 and 1 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 644799-1?
644799-1 is cataloged in the Federal Logistics Information System (FLIS) under NSN 1560-00-606-0514. 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