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REF3 ✓ 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,PLAIN,ROD END is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY OR STEEL RACE INSERT, shank_style: INTERNALLY THREADED W/BEAD AND WRENCH FLATS AND INSPECTION HOLE, thread_class: 2B, bore_diameter: 0.1895 INCHES MINIMUM AND 0.1915 INCHES MAXIMUM IN, overall_length: 1.3820 INCHES NOMINAL IN, thread_diameter: 0.190 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 3120-00-453-6221, 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
REF3
NSN: 3120-00-453-6221
FSC: 3120
CAGE: 99528 — RADIAL BEARING CORPORATION DBA RADIAL BEARING CORP OF CONNECTICU DIV RADIAL BEARING LLC (USA)
SPECIFICATIONS
materialCOPPER ALLOY OR STEEL RACE INSERT
shank_styleINTERNALLY THREADED W/BEAD AND WRENCH FLATS AND INSPECTION HOLE
thread_class2B
bore_diameter0.1895 INCHES MINIMUM AND 0.1915 INCHES MAXIMUM IN
overall_length1.3820 INCHES NOMINAL IN
thread_diameter0.190 INCHES NOMINAL IN
style_designatorBALL TYPE
thread_directionRIGHT-HAND
inner_member_width0.3070 INCHES MINIMUM AND 0.3120 INCHES MAXIMUM IN
outer_member_width0.2500 INCHES MINIMUM AND 0.2550 INCHES MAXIMUM IN
shank_thread_length0.5780 INCHES NOMINAL IN
thread_quantity_per_inch32
NSN3120-00-453-6221
COMPONENT DIAGRAM
BALL BEARING — SEAL TYPE DETERMINES MAINTENANCE OD: — · BORE: — · WIDTH: — SEAL: Open · PN: REF3 · 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
•
OUTER MEMBER WIDTH: 0.2500 INCHES MINIMUM AND 0.2550 INCHES MAXIMUM IN
•
SHANK THREAD LENGTH: 0.5780 INCHES NOMINAL IN
•
BORE CENTER TO SHANK END DISTANCE: 1.0620 INCHES MINIMUM AND 1.0720 INCHES MAXIMUM IN
•
THREAD CLASS: 2B
•
MATERIAL: COPPER ALLOY OR STEEL RACE INSERT
•
STYLE DESIGNATOR: BALL TYPE
TECHNICAL CHARACTERISTICS (FLIS)
OUTER MEMBER WIDTH0.2500 INCHES MINIMUM AND 0.2550 INCHES MAXIMUM IN
SHANK THREAD LENGTH0.5780 INCHES NOMINAL IN
BORE CENTER TO SHANK END DISTANCE1.0620 INCHES MINIMUM AND 1.0720 INCHES MAXIMUM IN
THREAD CLASS2B
MATERIALCOPPER ALLOY OR STEEL RACE INSERT
MATERIALSTEEL INNER MEMBER
STYLE DESIGNATORBALL TYPE
MATERIALSTEEL ROD END BODY
THREAD SERIES DESIGNATORUNF
SHANK WIDTH ACROSS WRENCH FLATS0.3120 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 10
S3RTFInterchangeable
interchangeable cross-reference
interchangeable
SWE902020Interchangeable
interchangeable cross-reference
interchangeable
R60105A323A18S0000Interchangeable
interchangeable cross-reference
interchangeable
TR3Interchangeable
interchangeable cross-reference
interchangeable
TR-3 330 0HMInterchangeable
interchangeable cross-reference
interchangeable
TR-3-3320FInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is REF3?
REF3 is a BEARING,PLAIN,ROD END.
What parts can replace REF3?
There are 10 known substitutes for REF3: S3RTF, SWE902020, R60105A323A18S0000 and 7 more. Substitute compatibility should be verified for your specific system.
What is the NSN for REF3?
REF3 is cataloged in the Federal Logistics Information System (FLIS) under NSN 3120-00-453-6221. 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