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Technical Data Sheet
PartsTable / COMPONENT / XK1
XK1 ✓ 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 PISTON AND FOLLOWER ASSEMBLY is a the manufacturer industrial component. Key specifications include drive_end_style: SQUARE, end_item_identification: WARREN 9X6X16 VERTICAL SINGLE PUMP, nominal_pipe_size_for_which_designed: 0.125 INCHES 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 4320-00-177-3125, 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
XK1
NSN: 4320-00-177-3125
FSC: 4320
CAGE: 63857 — CIRCOR NAVAL SOLUTIONS LLC DBA WARREN PUMPS (USA)
SPECIFICATIONS
drive_end_styleSQUARE
end_item_identificationWARREN 9X6X16 VERTICAL SINGLE PUMP
nominal_pipe_size_for_which_designed0.125 INCHES IN
general_characteristics_item_descriptionCONSISTS OF 1 EA STEAM PISTON HEAD; 1 EA BULL RING; 1 EA PISTON FOLLOWER; 2 EA PISTON RING; 6 EA STUD; 6 EA HEX NUT; 6 EA COTTER PIN; STEEL O/A; 9 IN. OD; 4.500 IN. H; 2.125 IN. ID IN
NSN4320-00-177-3125
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available PISTON AND FOLLOWER ASSEMBLY TITLE COMPONENT PN XK1 MFR PISTON AND FOLLOWER AS
KEY FEATURES
•
GENERAL CHARACTERISTICS ITEM DESCRIPTION: CONSISTS OF 1 EA STEAM PISTON HEAD; 1 EA BULL RING; 1 EA PISTON FOLLOWER; 2 EA PISTON RING; 6 EA STUD; 6 EA HEX NUT; 6 EA COTTER PIN; STEEL O/A; 9 IN. OD; 4.500 IN. H; 2.125 IN. ID IN
TECHNICAL CHARACTERISTICS (FLIS)
END ITEM IDENTIFICATIONWARREN 9X6X16 VERTICAL SINGLE PUMP
GENERAL CHARACTERISTICS ITEM DESCRIPTIONCONSISTS OF 1 EA STEAM PISTON HEAD; 1 EA BULL RING; 1 EA PISTON FOLLOWER; 2 EA PISTON RING; 6 EA STUD; 6 EA HEX NUT; 6 EA COTTER PIN; STEEL O/A; 9 IN. OD; 4.500 IN. H; 2.125 IN. ID IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 24
BS6-2081,PC.152Interchangeable
interchangeable cross-reference
interchangeable
SJ2Interchangeable
interchangeable cross-reference
interchangeable
BS7-2082PC152Interchangeable
interchangeable cross-reference
interchangeable
BS5-1705PC175Interchangeable
interchangeable cross-reference
interchangeable
BS5-1704PC175Interchangeable
interchangeable cross-reference
interchangeable
BS6-2081PC146Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is XK1?
XK1 is a PISTON AND FOLLOWER ASSEMBLY.
What parts can replace XK1?
There are 24 known substitutes for XK1: BS6-2081,PC.152, SJ2, BS7-2082PC152 and 21 more. Substitute compatibility should be verified for your specific system.
What is the NSN for XK1?
XK1 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4320-00-177-3125. 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