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Technical Data Sheet
PartsTable / COMPONENT / M4390
M4390 ✓ 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 BUSHING,SLEEVE is a the manufacturer industrial component. Key specifications include material: PLASTIC OVERALL, corner_shape: SQUARE ALL CORNERS, overall_length: 0.8300 INCHES NOMINAL IN, special_features: 0.3100 IN. SPHERICAL RADIUS ON LEFT END SURFACE OF BODY IN, style_designator: SOLID, PLAIN, NO OUTSIDE FLANGES, body_inside_diameter: 0.8100 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 3120-01-088-6159, 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
M4390
NSN: 3120-01-088-6159
FSC: 3120
CAGE: 91929 — HONEYWELL INTERNATIONAL INC. DBA HONEYWEEL SENSING & CONTROLS (USA)
SPECIFICATIONS
materialPLASTIC OVERALL
corner_shapeSQUARE ALL CORNERS
overall_length0.8300 INCHES NOMINAL IN
special_features0.3100 IN. SPHERICAL RADIUS ON LEFT END SURFACE OF BODY IN
style_designatorSOLID, PLAIN, NO OUTSIDE FLANGES
body_inside_diameter0.8100 INCHES NOMINAL IN
body_outside_diameter1.2300 INCHES NOMINAL IN
NSN3120-01-088-6159
COMPONENT DIAGRAM
BALL BEARING — SEAL TYPE DETERMINES MAINTENANCE OD: — · BORE: — · WIDTH: — SEAL: Open · PN: M4390 · 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
•
STYLE DESIGNATOR: SOLID, PLAIN, NO OUTSIDE FLANGES
•
BODY INSIDE DIAMETER: 0.8100 INCHES NOMINAL IN
•
CORNER SHAPE: SQUARE ALL CORNERS
•
MATERIAL: PLASTIC OVERALL
•
BODY OUTSIDE DIAMETER: 1.2300 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
SPECIAL FEATURES0.3100 IN. SPHERICAL RADIUS ON LEFT END SURFACE OF BODY IN
STYLE DESIGNATORSOLID, PLAIN, NO OUTSIDE FLANGES
BODY INSIDE DIAMETER0.8100 INCHES NOMINAL IN
CORNER SHAPESQUARE ALL CORNERS
MATERIALPLASTIC OVERALL
OVERALL LENGTH0.8300 INCHES NOMINAL IN
BODY OUTSIDE DIAMETER1.2300 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 15
ASTM B438Interchangeable
interchangeable cross-reference
interchangeable
PL-2D3-981 ITEMInterchangeable
interchangeable cross-reference
interchangeable
PB2432-16Interchangeable
interchangeable cross-reference
interchangeable
183003Interchangeable
interchangeable cross-reference
interchangeable
N1156PC102Interchangeable
interchangeable cross-reference
interchangeable
416Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is M4390?
M4390 is a BUSHING,SLEEVE.
What parts can replace M4390?
There are 15 known substitutes for M4390: ASTM B438, PL-2D3-981 ITEM, PB2432-16 and 12 more. Substitute compatibility should be verified for your specific system.
What is the NSN for M4390?
M4390 is cataloged in the Federal Logistics Information System (FLIS) under NSN 3120-01-088-6159. 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