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U539927 — GUARD,CORE ASSEMBLY

✓ Government record, cited
— · COMPONENT
PRODUCT OVERVIEW

U539927: GUARD,CORE ASSEMBLY.

The GUARD,CORE ASSEMBLY is a the manufacturer industrial component. Key specifications include fsc_application_data: PRECOOLER P/N UA537577-4, end_item_identification: B-1B AIRCRAFT, reference_data_and_literature: T.O. 15A8-3-23-3, general_characteristics_item_description: LEFT HAND SIDE.

This part is cataloged in the U.S. Government catalog under NSN 1660-01-373-3545, 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
U539927
NSN: 1660-01-373-3545
FSC: 1660 — Aircraft Air Conditioning, Heating, and Pressurizing Equipment
CAGE: 78943 — TRIUMPH THERMAL SYSTEMS, LLC (USA)
SPECIFICATIONS
fsc_application_dataPRECOOLER P/N UA537577-4
end_item_identificationB-1B AIRCRAFT
reference_data_and_literatureT.O. 15A8-3-23-3
general_characteristics_item_descriptionLEFT HAND SIDE
NSN1660-01-373-3545
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available GUARD,CORE ASSEMBLY TITLE COMPONENT PN U539927 MFR GUARD,CORE ASSEMBLY
KEY FEATURES
•
FSC APPLICATION DATA: PRECOOLER P/N UA537577-4
•
GENERAL CHARACTERISTICS ITEM DESCRIPTION: LEFT HAND SIDE
•
REFERENCE DATA AND LITERATURE: T.O. 15A8-3-23-3
TECHNICAL CHARACTERISTICS
FSC APPLICATION DATAPRECOOLER P/N UA537577-4
GENERAL CHARACTERISTICS ITEM DESCRIPTIONLEFT HAND SIDE
REFERENCE DATA AND LITERATURET.O. 15A8-3-23-3
END ITEM IDENTIFICATIONB-1B AIRCRAFT
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.
1660-00-001-1693 1660-00-001-1754 1660-00-001-2491 1660-00-001-2493 1660-00-001-2496 1660-00-001-2497 1660-00-001-4130 1660-00-001-4479
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)Demilitarization required — critical (Q)
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FREQUENTLY ASKED QUESTIONS
What is U539927?
U539927 is a GUARD,CORE ASSEMBLY.
What is the NSN for U539927?
U539927 is cataloged in the U.S. Government catalog under NSN 1660-01-373-3545. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.