PartsTable
Technical Data Sheet
PartsTable / COMPONENT / 4L4FK
4L4FK ✓ 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 POLYAMIDE NYLON OVERALL, slot_width: 0.0525 INCHES MINIMUM AND 0.0625 INCHES MAXIMUM AND 0.0250 INCHES NOMINAL FIRST IN, slot_length: 0.0156 INCHES MINIMUM AND 0.0781 INCHES MAXIMUM AND 0.0941 INCHES MINIMUM AND 0.1234 INCHES MAXIMUM FIRST IN, corner_shape: ROUND LEFT FLANGE BODY CORNER, flange_width: 0.0200 INCHES MINIMUM AND 0.0250 INCHES MAXIMUM IN, hole_diameter: 0.0625 INCHES MAXIMUM FIRST IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3120-00-809-2533, 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
4L4FK
NSN: 3120-00-809-2533
FSC: 3120
CAGE: 96881 — THOMSON INDUSTRIES INC (USA)
SPECIFICATIONS
materialPLASTIC POLYAMIDE NYLON OVERALL
slot_width0.0525 INCHES MINIMUM AND 0.0625 INCHES MAXIMUM AND 0.0250 INCHES NOMINAL FIRST IN
slot_length0.0156 INCHES MINIMUM AND 0.0781 INCHES MAXIMUM AND 0.0941 INCHES MINIMUM AND 0.1234 INCHES MAXIMUM FIRST IN
corner_shapeROUND LEFT FLANGE BODY CORNER
flange_width0.0200 INCHES MINIMUM AND 0.0250 INCHES MAXIMUM IN
hole_diameter0.0625 INCHES MAXIMUM FIRST IN
overall_length0.2550 INCHES MINIMUM AND 0.2750 INCHES MAXIMUM IN
style_designatorSPLIT, EXTERNAL FLANGE ONE END
body_inside_diameter0.2510 INCHES MINIMUM AND 0.2520 INCHES MAXIMUM IN
body_outside_diameter0.2965 INCHES MINIMUM AND 0.2975 INCHES MAXIMUM IN
flange_outside_diameter0.3900 INCHES MINIMUM AND 0.4210 INCHES MAXIMUM IN
antirotation/lubrication_type_and_quantity1 HOLE AND 4 SLOT
NSN3120-00-809-2533
COMPONENT DIAGRAM
BALL BEARING — SEAL TYPE DETERMINES MAINTENANCE OD: — · BORE: — · WIDTH: — SEAL: Open · PN: 4L4FK · 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: 0.2510 INCHES MINIMUM AND 0.2520 INCHES MAXIMUM IN
•
ANTIROTATION/LUBRICATION TYPE AND QUANTITY: 1 HOLE AND 4 SLOT
•
CORNER SHAPE: SQUARE LEFT FLANGE OUTSIDE RIGHT CORNER
•
BODY OUTSIDE DIAMETER: 0.2965 INCHES MINIMUM AND 0.2975 INCHES MAXIMUM IN
•
HOLE DIAMETER: 0.0625 INCHES MAXIMUM FIRST IN
•
MATERIAL: PLASTIC POLYAMIDE NYLON OVERALL
•
FLANGE OUTSIDE DIAMETER: 0.3900 INCHES MINIMUM AND 0.4210 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS (FLIS)
BODY INSIDE DIAMETER0.2510 INCHES MINIMUM AND 0.2520 INCHES MAXIMUM IN
ANTIROTATION/LUBRICATION TYPE AND QUANTITY1 HOLE AND 4 SLOT
CORNER SHAPESQUARE LEFT FLANGE OUTSIDE RIGHT CORNER
BODY OUTSIDE DIAMETER0.2965 INCHES MINIMUM AND 0.2975 INCHES MAXIMUM IN
HOLE DIAMETER0.0625 INCHES MAXIMUM FIRST IN
CORNER SHAPESQUARE OUTSIDE LEFT CORNER
MATERIALPLASTIC POLYAMIDE NYLON OVERALL
FLANGE OUTSIDE DIAMETER0.3900 INCHES MINIMUM AND 0.4210 INCHES MAXIMUM IN
SLOT WIDTH0.0525 INCHES MINIMUM AND 0.0625 INCHES MAXIMUM AND 0.0250 INCHES NOMINAL FIRST IN
SLOT LENGTH0.0156 INCHES MINIMUM AND 0.0781 INCHES MAXIMUM AND 0.0941 INCHES MINIMUM AND 0.1234 INCHES MAXIMUM FIRST IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 8
910137-4Interchangeable
interchangeable cross-reference
interchangeable
2673Interchangeable
interchangeable cross-reference
interchangeable
4165Interchangeable
interchangeable cross-reference
interchangeable
7370 PIECE 76Interchangeable
interchangeable cross-reference
interchangeable
4L4FKInterchangeable
interchangeable cross-reference
interchangeable
3677UInterchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 4L4FK?
4L4FK is a BEARING,SLEEVE.
What parts can replace 4L4FK?
There are 8 known substitutes for 4L4FK: 910137-4, 2673, 4165 and 5 more. Substitute compatibility should be verified for your specific system.
Is 4L4FK still available?
4L4FK is currently cancelled.
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Last verified: July 2026