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T0A403 ✓ 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 VALVE ASSEMBLY,ACTUATING is a the manufacturer industrial component. Key specifications include general_characteristics_item_description: STEEL,CONSISTS OF 2 VALVE PLATES,1 CROSS ASSY,1 WEIGHT,1 HOOK,6.250 IN. LG O/A,4.125 W BY 4.250 IN.

H W. This product is currently in active production with full OEM support. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4530-00-449-4853, 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
T0A403
NSN: 4530-00-449-4853
FSC: 4530
CAGE: 5RQL2 — DRS ENVIRONMENTAL SYSTEMS INC (USA)
SPECIFICATIONS
general_characteristics_item_descriptionSTEEL,CONSISTS OF 2 VALVE PLATES,1 CROSS ASSY,1 WEIGHT,1 HOOK,6.250 IN. LG O/A,4.125 W BY 4.250 IN. H W
NSN4530-00-449-4853
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available VALVE ASSEMBLY,ACTUATING TITLE COMPONENT PN T0A403 MFR VALVE ASSEMBLY,ACTUATI
KEY FEATURES
•
GENERAL CHARACTERISTICS ITEM DESCRIPTION: STEEL,CONSISTS OF 2 VALVE PLATES,1 CROSS ASSY,1 WEIGHT,1 HOOK,6.250 IN. LG O/A,4.125 W BY 4.250 IN. H W
TECHNICAL CHARACTERISTICS (FLIS)
GENERAL CHARACTERISTICS ITEM DESCRIPTIONSTEEL,CONSISTS OF 2 VALVE PLATES,1 CROSS ASSY,1 WEIGHT,1 HOOK,6.250 IN. LG O/A,4.125 W BY 4.250 IN. H W
VERIFIED SUBSTITUTES & CROSS-REFERENCES 20
A52491-75Interchangeable
interchangeable cross-reference
interchangeable
701Interchangeable
interchangeable cross-reference
interchangeable
A2027Interchangeable
interchangeable cross-reference
interchangeable
BS4-1903PC12Interchangeable
interchangeable cross-reference
interchangeable
BS4-1897PC12Interchangeable
interchangeable cross-reference
interchangeable
G27Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is T0A403?
T0A403 is a VALVE ASSEMBLY,ACTUATING.
What parts can replace T0A403?
There are 20 known substitutes for T0A403: A52491-75, 701, A2027 and 17 more. Substitute compatibility should be verified for your specific system.
What is the NSN for T0A403?
T0A403 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4530-00-449-4853. 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