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C646001 — RING,PISTON

✓ Government record, cited
— · COMPONENT
PRODUCT OVERVIEW

C646001: RING,PISTON.

The RING,PISTON is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, ring_style: CONCENTRIC, joint_style: STEP JOINT, overall_width: 0.1875 INCHES NOMINAL IN, surface_treatment: OXIDE OVERALL, radial_wall_thickness: 0.1250 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 4310-00-414-7974, 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
C646001
NSN: 4310-00-414-7974
FSC: 4310 — Compressors and Vacuum Pumps
CAGE: 77640 — ZF ACTIVE SAFETY AND ELECTRONICS US LLC DIV TRW COMMERCIAL STEERING SYSTEMS (USA)
SPECIFICATIONS
materialSTEEL OVERALL
ring_styleCONCENTRIC
joint_styleSTEP JOINT
overall_width0.1875 INCHES NOMINAL IN
surface_treatmentOXIDE OVERALL
radial_wall_thickness0.1250 INCHES NOMINAL IN
standard_bore_diameter4.000 INCHES IN
end_item_identificationHARNISCHFEGER CORP.;MODEL M32P52,CRANE TRUCK MOUNTED,NSN 3810-00-151-4431
cross-sectional_shape_styleDOUBLE INSIDE BEVEL, STRAIGHT FACE
NSN4310-00-414-7974
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available RING,PISTON TITLE COMPONENT PN C646001 MFR RING,PISTON
KEY FEATURES
•
CROSS-SECTIONAL SHAPE STYLE: DOUBLE INSIDE BEVEL, STRAIGHT FACE
•
JOINT STYLE: STEP JOINT
•
RADIAL WALL THICKNESS: 0.1250 INCHES NOMINAL IN
•
RING STYLE: CONCENTRIC
•
SURFACE TREATMENT: OXIDE OVERALL
•
STANDARD BORE DIAMETER: 4.000 INCHES IN
TECHNICAL CHARACTERISTICS
OVERALL WIDTH0.1875 INCHES NOMINAL IN
CROSS-SECTIONAL SHAPE STYLEDOUBLE INSIDE BEVEL, STRAIGHT FACE
JOINT STYLESTEP JOINT
RADIAL WALL THICKNESS0.1250 INCHES NOMINAL IN
RING STYLECONCENTRIC
SURFACE TREATMENTOXIDE OVERALL
STANDARD BORE DIAMETER4.000 INCHES IN
END ITEM IDENTIFICATIONHARNISCHFEGER CORP.;MODEL M32P52,CRANE TRUCK MOUNTED,NSN 3810-00-151-4431
MATERIALSTEEL OVERALL
OTHER ITEMS IN FSC 4310 — Compressors and Vacuum Pumps
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
4310-00-000-0050 4310-00-001-0059 4310-00-001-2044 4310-00-001-3477 4310-00-001-3493 4310-00-001-6194 4310-00-001-6381 4310-00-001-7755
SUBSTITUTES & CROSS-REFERENCES 1
3435846C1Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is C646001?
C646001 is a RING,PISTON.
What parts can replace C646001?
There is 1 known substitute for C646001: 3435846C1. Substitute compatibility should be verified for your specific system.
What is the NSN for C646001?
C646001 is cataloged in the U.S. Government catalog under NSN 4310-00-414-7974. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.