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PartsTable / COMPONENT / W7873PC185
W7873PC185 ✓ 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 RING,PISTON is a the manufacturer industrial component. Key specifications include material: STEEL EXPANDER, ring_style: CONCENTRIC, joint_style: VERTICAL JOINT, overall_width: 0.1865 INCHES NOMINAL IN, radial_wall_thickness: 0.1790 INCHES MINIMUM AND 0.1890 INCHES MAXIMUM IN, standard_bore_diameter: 4.500 INCHES IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4310-00-173-5407, 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
W7873PC185
NSN: 4310-00-173-5407
FSC: 4310
CAGE: 83179 — JOY MFG CO AIR POWER GROUP MICHIGAN CITY PLANT (USA)
SPECIFICATIONS
materialSTEEL EXPANDER
ring_styleCONCENTRIC
joint_styleVERTICAL JOINT
overall_width0.1865 INCHES NOMINAL IN
radial_wall_thickness0.1790 INCHES MINIMUM AND 0.1890 INCHES MAXIMUM IN
standard_bore_diameter4.500 INCHES IN
cross-sectional_shape_styleSTRAIGHT FACE, DOUBLE SCRAPER, VENTILATED OIL CONTROL
oil_passage_type_and_quantity12 HOLE HORIZONTALLY THROUGH RING
NSN4310-00-173-5407
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available RING,PISTON TITLE COMPONENT PN W7873PC185 MFR RING,PISTON
KEY FEATURES
•
JOINT STYLE: VERTICAL JOINT
•
CROSS-SECTIONAL SHAPE STYLE: STRAIGHT FACE, DOUBLE SCRAPER, VENTILATED OIL CONTROL
•
RING STYLE: CONCENTRIC
•
RADIAL WALL THICKNESS: 0.1790 INCHES MINIMUM AND 0.1890 INCHES MAXIMUM IN
•
OIL PASSAGE TYPE AND QUANTITY: 12 HOLE HORIZONTALLY THROUGH RING
•
STANDARD BORE DIAMETER: 4.500 INCHES IN
•
MATERIAL: STEEL EXPANDER
TECHNICAL CHARACTERISTICS (FLIS)
JOINT STYLEVERTICAL JOINT
CROSS-SECTIONAL SHAPE STYLESTRAIGHT FACE, DOUBLE SCRAPER, VENTILATED OIL CONTROL
OVERALL WIDTH0.1865 INCHES NOMINAL IN
RING STYLECONCENTRIC
RADIAL WALL THICKNESS0.1790 INCHES MINIMUM AND 0.1890 INCHES MAXIMUM IN
OIL PASSAGE TYPE AND QUANTITY12 HOLE HORIZONTALLY THROUGH RING
STANDARD BORE DIAMETER4.500 INCHES IN
MATERIALSTEEL EXPANDER
VERIFIED SUBSTITUTES & CROSS-REFERENCES 13
2645Interchangeable
interchangeable cross-reference
interchangeable
852BInterchangeable
interchangeable cross-reference
interchangeable
AMS-QQ-A-200/8Interchangeable
interchangeable cross-reference
interchangeable
OC-2558Interchangeable
interchangeable cross-reference
interchangeable
PA5660Interchangeable
interchangeable cross-reference
interchangeable
44H352Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is W7873PC185?
W7873PC185 is a RING,PISTON.
What parts can replace W7873PC185?
There are 13 known substitutes for W7873PC185: 2645, 852B, AMS-QQ-A-200/8 and 10 more. Substitute compatibility should be verified for your specific system.
Is W7873PC185 still available?
W7873PC185 is currently cancelled.
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Last verified: July 2026