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SE121T ✓ 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 material: PLASTIC, nut_style: HEXAGON, thickness: 0.053 INCHES MINIMUM AND 0.073 INCHES MAXIMUM IN, body_style: TUBE TYPE, nut_height: 0.467 INCHES NOMINAL IN, thread_class: 2B. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3120-01-522-5223, 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
SE121T
NSN: 3120-01-522-5223
FSC: 3120
CAGE: 56349 — TRI-TEC MANUFACTURING, LLC (USA)
SPECIFICATIONS
materialPLASTIC
nut_styleHEXAGON
thickness0.053 INCHES MINIMUM AND 0.073 INCHES MAXIMUM IN
body_styleTUBE TYPE
nut_height0.467 INCHES NOMINAL IN
thread_class2B
hole_diameter0.375 INCHES MINIMUM AND 0.390 INCHES MAXIMUM IN
thread_seriesUNS
overall_length0.625 INCHES NOMINAL IN
operation_methodMANUAL
overall_diameter1.500 INCHES NOMINAL IN
special_featuresVEHICLE MOUNTING
NSN3120-01-522-5223
COMPONENT DIAGRAM
BALL BEARING — SEAL TYPE DETERMINES MAINTENANCE OD: — · BORE: — · WIDTH: — SEAL: Open · PN: SE121T · 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
VERIFIED SUBSTITUTES & CROSS-REFERENCES 26
301 005Interchangeable
interchangeable cross-reference
interchangeable
32V 5A BU MBInterchangeable
interchangeable cross-reference
interchangeable
5920PL0975424Interchangeable
interchangeable cross-reference
interchangeable
GW10U636SC2Interchangeable
interchangeable cross-reference
interchangeable
FF-W-92BInterchangeable
interchangeable cross-reference
interchangeable
S1100-6Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is SE121T?
SE121T is a BEARING,WASHER,THRUST.
What parts can replace SE121T?
There are 26 known substitutes for SE121T: 301 005, 32V 5A BU MB, 5920PL0975424 and 23 more. Substitute compatibility should be verified for your specific system.
What is the NSN for SE121T?
SE121T is cataloged in the Federal Logistics Information System (FLIS) under NSN 3120-01-522-5223. 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