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Technical Data Sheet
PartsTable / COMPONENT / 206-010-421-5
206-010-421-5 ✓ 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,SLEEVE is a the manufacturer industrial component. Key specifications include material: PLASTIC POLYTETRAFLUOROETHYLENE LEFT END SURFACE OF FLANGE, corner_shape: CHAMFERED INSIDE LEFT CORNER, flange_width: 0.0900 INCHES MINIMUM AND 0.0930 INCHES MAXIMUM IN, overall_length: 0.5800 INCHES MINIMUM AND 0.6030 INCHES MAXIMUM IN, surface_finish: 63.0 MICROINCHES OUTSIDE DIAMETER SURFACE OF BODY, style_designator: SOLID, EXTERNAL FLANGE ONE END. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3120-00-135-0556, 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
206-010-421-5
NSN: 3120-00-135-0556
FSC: 3120
CAGE: 09455 — RBC TRANSPORT DYNAMICS CORP DIV RBC TRANSPORT DYNAMICS (USA)
SPECIFICATIONS
materialPLASTIC POLYTETRAFLUOROETHYLENE LEFT END SURFACE OF FLANGE
corner_shapeCHAMFERED INSIDE LEFT CORNER
flange_width0.0900 INCHES MINIMUM AND 0.0930 INCHES MAXIMUM IN
overall_length0.5800 INCHES MINIMUM AND 0.6030 INCHES MAXIMUM IN
surface_finish63.0 MICROINCHES OUTSIDE DIAMETER SURFACE OF BODY
style_designatorSOLID, EXTERNAL FLANGE ONE END
surface_treatmentANODIZE OVERALL
body_inside_diameter0.7495 INCHES MINIMUM AND 0.7505 INCHES MAXIMUM IN
body_outside_diameter0.9385 INCHES MINIMUM AND 0.9390 INCHES MAXIMUM IN
flange_outside_diameter1.0900 INCHES MINIMUM AND 1.1200 INCHES MAXIMUM IN
material_document_and_classificationAMS4120 ASSN STD 1ST MATERIAL RESPONSE AND AMS4121 ASSN STD 2ND MATERIAL RESPONSE AND AMS4122 ASSN STD 3RD MATERIAL RESPONSE OUTER LAYER
surface_treatment_document_and_classificationMIL-A-8625 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
NSN3120-00-135-0556
COMPONENT DIAGRAM
BALL BEARING — SEAL TYPE DETERMINES MAINTENANCE OD: — · BORE: — · WIDTH: — SEAL: Open · PN: 206-010-421-5 · 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
•
MATERIAL DOCUMENT AND CLASSIFICATION: AMS4120 ASSN STD 1ST MATERIAL RESPONSE AND AMS4121 ASSN STD 2ND MATERIAL RESPONSE AND AMS4122 ASSN STD 3RD MATERIAL RESPONSE OUTER LAYER
•
SURFACE FINISH: 63.0 MICROINCHES RIGHT END SURFACE OF LEFT FLANGE
•
CORNER SHAPE: SQUARE OUTSIDE RIGHT CORNER
TECHNICAL CHARACTERISTICS (FLIS)
MATERIAL DOCUMENT AND CLASSIFICATIONAMS4120 ASSN STD 1ST MATERIAL RESPONSE AND AMS4121 ASSN STD 2ND MATERIAL RESPONSE AND AMS4122 ASSN STD 3RD MATERIAL RESPONSE OUTER LAYER
SURFACE FINISH63.0 MICROINCHES RIGHT END SURFACE OF LEFT FLANGE
SURFACE FINISH63.0 MICROINCHES RIGHT END SURFACE OF BODY
CORNER SHAPESQUARE OUTSIDE RIGHT CORNER
SURFACE FINISH63.0 MICROINCHES OUTSIDE DIAMETER SURFACE OF FLANGE
CORNER SHAPESQUARE INSIDE RIGHT CORNER
CORNER SHAPESQUARE LEFT FLANGE OUTSIDE RIGHT CORNER
CORNER SHAPESQUARE OUTSIDE LEFT CORNER
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMIL-A-8625 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
SURFACE FINISH63.0 MICROINCHES OUTSIDE DIAMETER SURFACE OF BODY
VERIFIED SUBSTITUTES & CROSS-REFERENCES 5
B4949Interchangeable
interchangeable cross-reference
interchangeable
127625Interchangeable
interchangeable cross-reference
interchangeable
NHLF-12-216Interchangeable
Same NIIN cross-reference
interchangeable
AJF12A103Interchangeable
Same NIIN cross-reference
interchangeable
90887-5Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 206-010-421-5?
206-010-421-5 is a BEARING,SLEEVE.
What parts can replace 206-010-421-5?
There are 5 known substitutes for 206-010-421-5: B4949, 127625, NHLF-12-216 and 2 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 206-010-421-5?
206-010-421-5 is cataloged in the Federal Logistics Information System (FLIS) under NSN 3120-00-135-0556. This indicates validated use in U.S. government and defense supply chains.
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PartsTable Design LLC · partstable.com
Last verified: July 2026