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PartsTable / COMPONENT / R56PC20
R56PC20 ✓ 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 LINER,THROAT is a the manufacturer industrial component. Key specifications include general_characteristics_item_description: COPPER ALLOY;EXTERNALLY FLANGED;0.312 IN.O/A LG;1.859 IN.FLANGE OD;1.624 IN.OD;1.297 IN.ID;0.125 IN.FLANGE THICKNESS 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 4320-00-369-0055, 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
R56PC20
NSN: 4320-00-369-0055
FSC: 4320
CAGE: 63857 — CIRCOR NAVAL SOLUTIONS LLC DBA WARREN PUMPS (USA)
SPECIFICATIONS
general_characteristics_item_descriptionCOPPER ALLOY;EXTERNALLY FLANGED;0.312 IN.O/A LG;1.859 IN.FLANGE OD;1.624 IN.OD;1.297 IN.ID;0.125 IN.FLANGE THICKNESS IN
NSN4320-00-369-0055
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available LINER,THROAT TITLE COMPONENT PN R56PC20 MFR LINER,THROAT
KEY FEATURES
•
GENERAL CHARACTERISTICS ITEM DESCRIPTION: COPPER ALLOY;EXTERNALLY FLANGED;0.312 IN.O/A LG;1.859 IN.FLANGE OD;1.624 IN.OD;1.297 IN.ID;0.125 IN.FLANGE THICKNESS IN
TECHNICAL CHARACTERISTICS (FLIS)
GENERAL CHARACTERISTICS ITEM DESCRIPTIONCOPPER ALLOY;EXTERNALLY FLANGED;0.312 IN.O/A LG;1.859 IN.FLANGE OD;1.624 IN.OD;1.297 IN.ID;0.125 IN.FLANGE THICKNESS IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 13
E49Interchangeable
interchangeable cross-reference
interchangeable
CX5422Interchangeable
interchangeable cross-reference
interchangeable
AT96-2601-2PC33Interchangeable
interchangeable cross-reference
interchangeable
B21063E49Interchangeable
interchangeable cross-reference
interchangeable
RL3988-65Interchangeable
interchangeable cross-reference
interchangeable
375826069Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is R56PC20?
R56PC20 is a LINER,THROAT.
What parts can replace R56PC20?
There are 13 known substitutes for R56PC20: E49, CX5422, AT96-2601-2PC33 and 10 more. Substitute compatibility should be verified for your specific system.
What is the NSN for R56PC20?
R56PC20 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4320-00-369-0055. 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