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Technical Data Sheet
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K3203751 — BUSHING,SLEEVE

✓ Government record, cited
— · BALL BEARING
PRODUCT OVERVIEW

K3203751: BUSHING,SLEEVE.

The BUSHING,SLEEVE is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, corner_shape: SQUARE ALL CORNERS, flange_width: 0.0550 INCHES MINIMUM AND 0.0650 INCHES MAXIMUM IN, overall_length: 0.3000 INCHES NOMINAL IN, style_designator: SOLID, EXTERNAL FLANGE ONE END, body_inside_diameter: 1.5770 INCHES MINIMUM AND 1.5820 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 3120-01-481-9114, 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
K3203751
NSN: 3120-01-481-9114
FSC: 3120 — Bearings, Plain, Unmounted
CAGE: 43999 — THE BOEING COMPANY DIV LEGACY AM&M (USA)
SPECIFICATIONS
materialSTEEL OVERALL
corner_shapeSQUARE ALL CORNERS
flange_width0.0550 INCHES MINIMUM AND 0.0650 INCHES MAXIMUM IN
overall_length0.3000 INCHES NOMINAL IN
style_designatorSOLID, EXTERNAL FLANGE ONE END
body_inside_diameter1.5770 INCHES MINIMUM AND 1.5820 INCHES MAXIMUM IN
body_outside_diameter1.6970 INCHES MINIMUM AND 1.6975 INCHES MAXIMUM IN
end_item_identificationB-1B ACFT
flange_outside_diameter1.9370 INCHES NOMINAL IN
material_document_and_classificationAMS5643 ASSN STD ALL MATERIAL RESPONSES OVERALL
NSN3120-01-481-9114
COMPONENT DIAGRAM
BALL BEARING — SEAL TYPE DETERMINES MAINTENANCE OD: — · BORE: — · WIDTH: — SEAL: Open · PN: K3203751 · 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
•
CORNER SHAPE: SQUARE ALL CORNERS
•
FLANGE OUTSIDE DIAMETER: 1.9370 INCHES NOMINAL IN
•
BODY OUTSIDE DIAMETER: 1.6970 INCHES MINIMUM AND 1.6975 INCHES MAXIMUM IN
•
STYLE DESIGNATOR: SOLID, EXTERNAL FLANGE ONE END
•
MATERIAL DOCUMENT AND CLASSIFICATION: AMS5643 ASSN STD ALL MATERIAL RESPONSES OVERALL
•
BODY INSIDE DIAMETER: 1.5770 INCHES MINIMUM AND 1.5820 INCHES MAXIMUM IN
•
FLANGE WIDTH: 0.0550 INCHES MINIMUM AND 0.0650 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
CORNER SHAPESQUARE ALL CORNERS
FLANGE OUTSIDE DIAMETER1.9370 INCHES NOMINAL IN
BODY OUTSIDE DIAMETER1.6970 INCHES MINIMUM AND 1.6975 INCHES MAXIMUM IN
STYLE DESIGNATORSOLID, EXTERNAL FLANGE ONE END
MATERIAL DOCUMENT AND CLASSIFICATIONAMS5643 ASSN STD ALL MATERIAL RESPONSES OVERALL
OVERALL LENGTH0.3000 INCHES NOMINAL IN
BODY INSIDE DIAMETER1.5770 INCHES MINIMUM AND 1.5820 INCHES MAXIMUM IN
FLANGE WIDTH0.0550 INCHES MINIMUM AND 0.0650 INCHES MAXIMUM IN
END ITEM IDENTIFICATIONB-1B ACFT
MATERIALSTEEL OVERALL
OTHER ITEMS IN FSC 3120 — Bearings, Plain, Unmounted
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
3120-00-001-1288 3120-00-001-1835 3120-00-001-1838 3120-00-001-1928 3120-00-001-1934 3120-00-001-3933 3120-00-001-3937 3120-00-001-3938
SUBSTITUTES & CROSS-REFERENCES 1
L3203751-005Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is K3203751?
K3203751 is a BUSHING,SLEEVE.
What parts can replace K3203751?
There is 1 known substitute for K3203751: L3203751-005. Substitute compatibility should be verified for your specific system.
What is the NSN for K3203751?
K3203751 is cataloged in the U.S. Government catalog under NSN 3120-01-481-9114. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.