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Technical Data Sheet
556P ✓ 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

PISTON,INTERNAL COMBUSTION ENGIN. Key specifications include material: STEEL CORROSION RESISTING FLOW CONTROL DEVICE, bonnet_type: INSIDE SCREW, connection_type: THREADED INTERNAL PIPE ALL ENDS, connection_style: PLAIN,OPTIONAL END(PIPE) ALL ENDS, style_designator: STRAIGHT THRU, thread_direction: RIGHT-HAND ALL ENDS. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4320-00-126-5220, 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
556P
NSN: 4320-00-126-5220
FSC: 4320
CAGE: 93232 — CURTISS-WRIGHT ELECTRO-MECHANICAL CORPORATION DBA CURTISS WRIGHT ENGINEERED PUMP DIVISION USE CAGE CODE 0UBG9 FOR CATALOGING (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING FLOW CONTROL DEVICE
bonnet_typeINSIDE SCREW
connection_typeTHREADED INTERNAL PIPE ALL ENDS
connection_stylePLAIN,OPTIONAL END(PIPE) ALL ENDS
style_designatorSTRAIGHT THRU
thread_directionRIGHT-HAND ALL ENDS
features_providedBONNET PACKING
operating_pressure300.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM FIRST RESPONSE LBS
flow_control_deviceDISK
nominal_thread_size1.500 INCHES ALL ENDS IN
maximum_operating_temp550.0 FAHRENHEIT FIRST RESPONSE DEGF
valve_operation_methodMANUAL
NSN4320-00-126-5220
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available PISTON,INTERNAL COMBUSTION ENGIN TITLE COMPONENT PN 556P MFR PISTON,INTERNAL COMBUS
VERIFIED SUBSTITUTES & CROSS-REFERENCES 34
9494K19Interchangeable
interchangeable cross-reference
interchangeable
908PInterchangeable
interchangeable cross-reference
interchangeable
9111502Interchangeable
interchangeable cross-reference
interchangeable
849026REVCInterchangeable
interchangeable cross-reference
interchangeable
SA7P8Interchangeable
interchangeable cross-reference
interchangeable
2194PNInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 556P?
556P is a PISTON,INTERNAL COMBUSTION ENGIN.
What parts can replace 556P?
There are 34 known substitutes for 556P: 9494K19, 908P, 9111502 and 31 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 556P?
556P is cataloged in the Federal Logistics Information System (FLIS) under NSN 4320-00-126-5220. This indicates validated use in U.S. government and defense supply chains.
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