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Technical Data Sheet
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126-252-9-203 — Technical Data Sheet

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— · 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: COPPER ALLOY OVERALL, corner_shape: SQUARE OUTSIDE LEFT CORNER, flange_width: 0.0443 INCHES MINIMUM AND 0.0493 INCHES MAXIMUM IN, overall_length: 0.1360 INCHES MINIMUM AND 0.1460 INCHES MAXIMUM IN, style_designator: SOLID, EXTERNAL FLANGE ONE END, body_inside_diameter: 0.1250 INCHES MINIMUM AND 0.1260 INCHES MAXIMUM IN. This part is cataloged in the Federal Logistics Information System under NSN 3120-00-929-1687, 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
126-252-9-203
NSN: 3120-00-929-1687
FSC: 3120
CAGE: 00481 — ASCO SINTERING CO
SPECIFICATIONS
materialCOPPER ALLOY OVERALL
corner_shapeSQUARE OUTSIDE LEFT CORNER
flange_width0.0443 INCHES MINIMUM AND 0.0493 INCHES MAXIMUM IN
overall_length0.1360 INCHES MINIMUM AND 0.1460 INCHES MAXIMUM IN
style_designatorSOLID, EXTERNAL FLANGE ONE END
body_inside_diameter0.1250 INCHES MINIMUM AND 0.1260 INCHES MAXIMUM IN
body_outside_diameter0.2510 INCHES MINIMUM AND 0.2520 INCHES MAXIMUM IN
flange_outside_diameter0.3100 INCHES MINIMUM AND 0.3150 INCHES MAXIMUM IN
nondefinitive_spec/std_data1 TYPE AND A COMPOSITION
material_document_and_classificationMIL-B-5697,TY 1,COMP A MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
NSN3120-00-929-1687
COMPONENT DIAGRAM
BALL BEARING — SEAL TYPE DETERMINES MAINTENANCE OD: — · BORE: — · WIDTH: — SEAL: Open · PN: 126-252-9-203 · 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
•
FLANGE OUTSIDE DIAMETER: 0.3100 INCHES MINIMUM AND 0.3150 INCHES MAXIMUM IN
•
FLANGE WIDTH: 0.0443 INCHES MINIMUM AND 0.0493 INCHES MAXIMUM IN
•
CORNER SHAPE: SQUARE LEFT FLANGE BODY CORNER
•
MATERIAL DOCUMENT AND CLASSIFICATION: MIL-B-5697,TY 1,COMP A MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
•
STYLE DESIGNATOR: SOLID, EXTERNAL FLANGE ONE END
TECHNICAL CHARACTERISTICS
FLANGE OUTSIDE DIAMETER0.3100 INCHES MINIMUM AND 0.3150 INCHES MAXIMUM IN
FLANGE WIDTH0.0443 INCHES MINIMUM AND 0.0493 INCHES MAXIMUM IN
CORNER SHAPESQUARE LEFT FLANGE BODY CORNER
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-B-5697,TY 1,COMP A MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
CORNER SHAPESQUARE INSIDE LEFT CORNER
CORNER SHAPESQUARE OUTSIDE RIGHT CORNER
STYLE DESIGNATORSOLID, EXTERNAL FLANGE ONE END
OVERALL LENGTH0.1360 INCHES MINIMUM AND 0.1460 INCHES MAXIMUM IN
NONDEFINITIVE SPEC/STD DATA1 TYPE AND A COMPOSITION
CORNER SHAPESQUARE INSIDE RIGHT CORNER
VERIFIED SUBSTITUTES & CROSS-REFERENCES 20
F3U219HInterchangeableGOVERNMENT REGISTRY
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F219InterchangeableGOVERNMENT REGISTRY
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8330105InterchangeableGOVERNMENT REGISTRY
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13-463-4InterchangeableGOVERNMENT REGISTRY
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221551InterchangeableGOVERNMENT REGISTRY
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509A40InterchangeableGOVERNMENT REGISTRY
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LIFECYCLE
StatusCANCELLEDGOVERNMENT REGISTRY
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 126-252-9-203?
126-252-9-203 is a BEARING,SLEEVE.
What parts can replace 126-252-9-203?
There are 20 known substitutes for 126-252-9-203: F3U219H, F219, 8330105 and 17 more. Substitute compatibility should be verified for your specific system.
Is 126-252-9-203 still available?
126-252-9-203 is currently cancelled.
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PartsTable Design LLC · partstable.com
Last verified: September 2026