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EP040506 ✓ 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

CONNECTOR,RECEPTACLE,ELECTRICAL. Key specifications include material: COPPER ALLOY OVERALL, corner_shape: SQUARE ALL CORNERS, overall_length: 0.3750 INCHES NOMINAL IN, special_features: OIL-IMPREGNATED, style_designator: SOLID, PLAIN, NO OUTSIDE FLANGES, body_inside_diameter: 0.2520 INCHES NOMINAL 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 3120-01-044-8711, 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
EP040506
NSN: 3120-01-044-8711
FSC: 3120
CAGE: 4T3X6 — BUNTING BEARINGS LLC DBA BUNTING BEARINGS CORP (USA)
SPECIFICATIONS
materialCOPPER ALLOY OVERALL
corner_shapeSQUARE ALL CORNERS
overall_length0.3750 INCHES NOMINAL IN
special_featuresOIL-IMPREGNATED
style_designatorSOLID, PLAIN, NO OUTSIDE FLANGES
body_inside_diameter0.2520 INCHES NOMINAL IN
body_outside_diameter0.3155 INCHES NOMINAL IN
NSN3120-01-044-8711
COMPONENT DIAGRAM
BALL BEARING — SEAL TYPE DETERMINES MAINTENANCE OD: — · BORE: — · WIDTH: — SEAL: Open · PN: EP040506 · 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
•
BODY OUTSIDE DIAMETER: 0.3155 INCHES NOMINAL IN
•
BODY INSIDE DIAMETER: 0.2520 INCHES NOMINAL IN
•
CORNER SHAPE: SQUARE ALL CORNERS
•
STYLE DESIGNATOR: SOLID, PLAIN, NO OUTSIDE FLANGES
•
MATERIAL: COPPER ALLOY OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
BODY OUTSIDE DIAMETER0.3155 INCHES NOMINAL IN
OVERALL LENGTH0.3750 INCHES NOMINAL IN
BODY INSIDE DIAMETER0.2520 INCHES NOMINAL IN
CORNER SHAPESQUARE ALL CORNERS
STYLE DESIGNATORSOLID, PLAIN, NO OUTSIDE FLANGES
MATERIALCOPPER ALLOY OVERALL
SPECIAL FEATURESOIL-IMPREGNATED
VERIFIED SUBSTITUTES & CROSS-REFERENCES 11
P253Interchangeable
interchangeable cross-reference
interchangeable
0C265Interchangeable
interchangeable cross-reference
interchangeable
2119Interchangeable
interchangeable cross-reference
interchangeable
A347-3Interchangeable
interchangeable cross-reference
interchangeable
AA347-3Interchangeable
interchangeable cross-reference
interchangeable
608-1368Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is EP040506?
EP040506 is a CONNECTOR,RECEPTACLE,ELECTRICAL.
What parts can replace EP040506?
There are 11 known substitutes for EP040506: P253, 0C265, 2119 and 8 more. Substitute compatibility should be verified for your specific system.
What is the NSN for EP040506?
EP040506 is cataloged in the Federal Logistics Information System (FLIS) under NSN 3120-01-044-8711. 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