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Technical Data Sheet
PartsTable / COMPONENT / 256-3294
256-3294 ✓ Verified by PartsTable
— · BALL BEARING
WHAT YOU NEED TO KNOW
2RS = sealed for life, ZZ = shielded re-greaseable ABEC grade: higher = tighter tolerance
ABEC-1 standard, ABEC-7+ for precision spindles
PRODUCT OVERVIEW

The BEARING,WASHER,THRUST is a the manufacturer industrial component. Key specifications include diameter: 0.4640 INCHES MINIMUM AND 0.4720 INCHES MAXIMUM IN, material: STEEL OVERALL, corner_shape: SQUARE FIRST INSIDE CORNER, surface_finish: 32.0 MICROINCHES RIGHT SIDE, hardness_rating: 60.0 ROCKWELL C NOMINAL OVERALL, outside_diameter: 1.1830 INCHES MINIMUM AND 1.1840 INCHES MAXIMUM 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 3120-00-256-3294, 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
256-3294
NSN: 3120-00-256-3294
FSC: 3120
CAGE: 59155 — MARINE DIESEL, INC. DBA MARINE DIESEL (USA)
SPECIFICATIONS
diameter0.4640 INCHES MINIMUM AND 0.4720 INCHES MAXIMUM IN
materialSTEEL OVERALL
corner_shapeSQUARE FIRST INSIDE CORNER
surface_finish32.0 MICROINCHES RIGHT SIDE
hardness_rating60.0 ROCKWELL C NOMINAL OVERALL
outside_diameter1.1830 INCHES MINIMUM AND 1.1840 INCHES MAXIMUM IN
special_features0.1090 IN. W BY 0.0510 IN. MAX DEEP BY 0.1460 IN. LG ANTI-ROTATIONAL SLOT ON RIGHT SIDE IN
style_designatorROUND
overall_thickness0.0840 INCHES MINIMUM AND 0.0845 INCHES MAXIMUM IN
center_hole_shape_styleROUND
cross-sectional_shape_styleRECTANGULAR
NSN3120-00-256-3294
COMPONENT DIAGRAM
BALL BEARING — SEAL TYPE DETERMINES MAINTENANCE OD: — · BORE: — · WIDTH: — SEAL: Open · PN: 256-3294 · OEM ⚠ VERIFY BEFORE ORDERING ABEC grade: higher = tighter tolerance = higher cost. ABEC-1 is standard, ABEC-7+ for precision spindles. Open, shielded (ZZ), and sealed (2RS) versions have different max RPM ratings ✓ BROKER TIP 2RS = sealed for life (no maintenance). ZZ = shielded, re-greaseable. Open = must lubricate on install. Common interchange: 6205-2RS = 6205-2RSR = 6205-DDU (same bearing, different suffix) PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
CROSS-SECTIONAL SHAPE STYLE: RECTANGULAR
•
SURFACE FINISH: 32.0 MICROINCHES RIGHT SIDE
•
HARDNESS RATING: 60.0 ROCKWELL C NOMINAL OVERALL
•
MATERIAL: STEEL OVERALL
•
CORNER SHAPE: SQUARE FIRST OUTSIDE CORNER
•
CENTER HOLE SHAPE STYLE: ROUND
TECHNICAL CHARACTERISTICS (FLIS)
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
SURFACE FINISH32.0 MICROINCHES RIGHT SIDE
HARDNESS RATING60.0 ROCKWELL C NOMINAL OVERALL
MATERIALSTEEL OVERALL
SPECIAL FEATURES0.1090 IN. W BY 0.0510 IN. MAX DEEP BY 0.1460 IN. LG ANTI-ROTATIONAL SLOT ON RIGHT SIDE IN
CORNER SHAPESQUARE FIRST OUTSIDE CORNER
CORNER SHAPESQUARE FIRST INSIDE CORNER
CENTER HOLE SHAPE STYLEROUND
DIAMETER0.4640 INCHES MINIMUM AND 0.4720 INCHES MAXIMUM IN
OVERALL THICKNESS0.0840 INCHES MINIMUM AND 0.0845 INCHES MAXIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 4
569866Interchangeable
interchangeable cross-reference
interchangeable
90505Interchangeable
interchangeable cross-reference
interchangeable
32-262Interchangeable
interchangeable cross-reference
interchangeable
334117Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 256-3294?
256-3294 is a BEARING,WASHER,THRUST.
What parts can replace 256-3294?
There are 4 known substitutes for 256-3294: 569866, 90505, 32-262 and 1 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 256-3294?
256-3294 is cataloged in the Federal Logistics Information System (FLIS) under NSN 3120-00-256-3294. 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