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Technical Data Sheet
PartsTable / COMPONENT / 388793
388793 ✓ 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: COPPER ALLOY 903 OVERALL, corner_shape: SQUARE OUTSIDE LEFT CORNER, flange_width: 0.3125 INCHES NOMINAL IN, overall_length: 1.3125 INCHES NOMINAL IN, style_designator: SOLID, EXTERNAL FLANGE ONE END, body_inside_diameter: 3.5312 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 3120-01-018-7290, 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
388793
NSN: 3120-01-018-7290
FSC: 3120
CAGE: 0UBG9 — CURTISS-WRIGHT ELECTRO-MECHANICAL CORPORATION DIV EPD (USA)
SPECIFICATIONS
materialCOPPER ALLOY 903 OVERALL
corner_shapeSQUARE OUTSIDE LEFT CORNER
flange_width0.3125 INCHES NOMINAL IN
overall_length1.3125 INCHES NOMINAL IN
style_designatorSOLID, EXTERNAL FLANGE ONE END
body_inside_diameter3.5312 INCHES NOMINAL IN
body_outside_diameter4.0625 INCHES NOMINAL IN
flange_outside_diameter4.7500 INCHES NOMINAL IN
NSN3120-01-018-7290
COMPONENT DIAGRAM
BALL BEARING — SEAL TYPE DETERMINES MAINTENANCE OD: — · BORE: — · WIDTH: — SEAL: Open · PN: 388793 · 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 OUTSIDE DIAMETER: 4.0625 INCHES NOMINAL IN
•
FLANGE OUTSIDE DIAMETER: 4.7500 INCHES NOMINAL IN
•
CORNER SHAPE: SQUARE INSIDE RIGHT CORNER
•
BODY INSIDE DIAMETER: 3.5312 INCHES NOMINAL IN
•
STYLE DESIGNATOR: SOLID, EXTERNAL FLANGE ONE END
TECHNICAL CHARACTERISTICS (FLIS)
BODY OUTSIDE DIAMETER4.0625 INCHES NOMINAL IN
FLANGE OUTSIDE DIAMETER4.7500 INCHES NOMINAL IN
OVERALL LENGTH1.3125 INCHES NOMINAL IN
CORNER SHAPESQUARE INSIDE RIGHT CORNER
BODY INSIDE DIAMETER3.5312 INCHES NOMINAL IN
STYLE DESIGNATORSOLID, EXTERNAL FLANGE ONE END
CORNER SHAPESQUARE LEFT FLANGE OUTSIDE RIGHT CORNER
CORNER SHAPESQUARE OUTSIDE LEFT CORNER
FLANGE WIDTH0.3125 INCHES NOMINAL IN
CORNER SHAPESQUARE LEFT FLANGE BODY CORNER
VERIFIED SUBSTITUTES & CROSS-REFERENCES 9
B107.1Interchangeable
interchangeable cross-reference
interchangeable
SD-1226Interchangeable
interchangeable cross-reference
interchangeable
A-A-1398Interchangeable
interchangeable cross-reference
interchangeable
40826Interchangeable
interchangeable cross-reference
interchangeable
1233289Interchangeable
interchangeable cross-reference
interchangeable
45-700-IG1-P10-1.20AInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 388793?
388793 is a BUSHING,SLEEVE.
What parts can replace 388793?
There are 9 known substitutes for 388793: B107.1, SD-1226, A-A-1398 and 6 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 388793?
388793 is cataloged in the Federal Logistics Information System (FLIS) under NSN 3120-01-018-7290. 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