PartsTable
Technical Data Sheet
PartsTable / COMPONENT / 4B21S6-013
4B21S6-013 ✓ 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: STEEL OVERALL, corner_shape: SQUARE ALL CORNERS, overall_length: 0.4012 INCHES MINIMUM AND 0.4062 INCHES MAXIMUM IN, surface_finish: 125.0 MICROINCHES RIGHT END SURFACE OF BODY, style_designator: SOLID, PLAIN, NO OUTSIDE FLANGES, surface_treatment: CHROMIUM OUTSIDE DIAMETER SURFACE OF BODY. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3120-00-293-5497, 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
4B21S6-013
NSN: 3120-00-293-5497
FSC: 3120
CAGE: 43999 — THE BOEING COMPANY DIV LEGACY AM&M (USA)
SPECIFICATIONS
materialSTEEL OVERALL
corner_shapeSQUARE ALL CORNERS
overall_length0.4012 INCHES MINIMUM AND 0.4062 INCHES MAXIMUM IN
surface_finish125.0 MICROINCHES RIGHT END SURFACE OF BODY
style_designatorSOLID, PLAIN, NO OUTSIDE FLANGES
surface_treatmentCHROMIUM OUTSIDE DIAMETER SURFACE OF BODY
body_inside_diameter0.3745 INCHES MINIMUM AND 0.3755 INCHES MAXIMUM IN
body_outside_diameter0.4980 INCHES MINIMUM AND 0.4985 INCHES MAXIMUM IN
NSN3120-00-293-5497
COMPONENT DIAGRAM
BALL BEARING — SEAL TYPE DETERMINES MAINTENANCE OD: — · BORE: — · WIDTH: — SEAL: Open · PN: 4B21S6-013 · 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 INSIDE DIAMETER: 0.3745 INCHES MINIMUM AND 0.3755 INCHES MAXIMUM IN
•
BODY OUTSIDE DIAMETER: 0.4980 INCHES MINIMUM AND 0.4985 INCHES MAXIMUM IN
•
SURFACE FINISH: 125.0 MICROINCHES LEFT END SURFACE OF BODY
•
STYLE DESIGNATOR: SOLID, PLAIN, NO OUTSIDE FLANGES
•
CORNER SHAPE: SQUARE ALL CORNERS
•
SURFACE TREATMENT: CHROMIUM OUTSIDE DIAMETER SURFACE OF BODY
TECHNICAL CHARACTERISTICS (FLIS)
BODY INSIDE DIAMETER0.3745 INCHES MINIMUM AND 0.3755 INCHES MAXIMUM IN
BODY OUTSIDE DIAMETER0.4980 INCHES MINIMUM AND 0.4985 INCHES MAXIMUM IN
SURFACE FINISH125.0 MICROINCHES LEFT END SURFACE OF BODY
SURFACE FINISH125.0 MICROINCHES RIGHT END SURFACE OF BODY
STYLE DESIGNATORSOLID, PLAIN, NO OUTSIDE FLANGES
SURFACE FINISH16.0 MICROINCHES OUTSIDE DIAMETER SURFACE OF BODY
CORNER SHAPESQUARE ALL CORNERS
SURFACE TREATMENTCHROMIUM OUTSIDE DIAMETER SURFACE OF BODY
MATERIALSTEEL OVERALL
SURFACE FINISH250.0 MICROINCHES INSIDE DIAMETER SURFACE OF BODY
VERIFIED SUBSTITUTES & CROSS-REFERENCES 15
14U714PCADB7426Interchangeable
interchangeable cross-reference
interchangeable
7426Interchangeable
interchangeable cross-reference
interchangeable
EC6Interchangeable
interchangeable cross-reference
interchangeable
115-9-6Interchangeable
interchangeable cross-reference
interchangeable
8000-74-2600Interchangeable
interchangeable cross-reference
interchangeable
5962-3800805BCXInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 4B21S6-013?
4B21S6-013 is a CONNECTOR,RECEPTACLE,ELECTRICAL.
What parts can replace 4B21S6-013?
There are 15 known substitutes for 4B21S6-013: 14U714PCADB7426, 7426, EC6 and 12 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 4B21S6-013?
4B21S6-013 is cataloged in the Federal Logistics Information System (FLIS) under NSN 3120-00-293-5497. 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