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91386-05-018 — BEARING,SLEEVE

✓ Government record, cited
— · BALL BEARING
PRODUCT OVERVIEW

91386-05-018: BEARING,SLEEVE.

The BEARING,SLEEVE is a the manufacturer industrial component. Key specifications include material: ALUMINUM ALLOY 2024 OUTER LAYER, corner_shape: SQUARE ALL CORNERS, overall_length: 0.1750 INCHES MINIMUM AND 0.1850 INCHES MAXIMUM IN, surface_finish: 125.0 MICROINCHES RIGHT END SURFACE OF BODY, style_designator: SOLID, PLAIN, NO OUTSIDE FLANGES, surface_treatment: ANODIZE OUTER LAYER. This part is cataloged in the U.S.

Government catalog under NSN 3120-01-042-8906, 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
91386-05-018
NSN: 3120-01-042-8906
FSC: 3120 — Bearings, Plain, Unmounted
CAGE: 09455 — RBC TRANSPORT DYNAMICS CORP DIV RBC TRANSPORT DYNAMICS (USA)
SPECIFICATIONS
materialALUMINUM ALLOY 2024 OUTER LAYER
corner_shapeSQUARE ALL CORNERS
overall_length0.1750 INCHES MINIMUM AND 0.1850 INCHES MAXIMUM IN
surface_finish125.0 MICROINCHES RIGHT END SURFACE OF BODY
style_designatorSOLID, PLAIN, NO OUTSIDE FLANGES
surface_treatmentANODIZE OUTER LAYER
body_inside_diameter0.3125 INCHES MINIMUM AND 0.3135 INCHES MAXIMUM IN
body_outside_diameter0.4381 INCHES MINIMUM AND 0.4386 INCHES MAXIMUM IN
surface_treatment_document_and_classificationMIL-A-8625 MIL SPEC SINGLE TREATMENT RESPONSE OUTER LAYER
NSN3120-01-042-8906
COMPONENT DIAGRAM
BALL BEARING — SEAL TYPE DETERMINES MAINTENANCE OD: — · BORE: — · WIDTH: — SEAL: Open · PN: 91386-05-018 · 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
•
SURFACE FINISH: 63.0 MICROINCHES OUTSIDE DIAMETER SURFACE OF BODY
•
CORNER SHAPE: SQUARE ALL CORNERS
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: MIL-A-8625 MIL SPEC SINGLE TREATMENT RESPONSE OUTER LAYER
•
BODY OUTSIDE DIAMETER: 0.4381 INCHES MINIMUM AND 0.4386 INCHES MAXIMUM IN
•
STYLE DESIGNATOR: SOLID, PLAIN, NO OUTSIDE FLANGES
TECHNICAL CHARACTERISTICS
SURFACE FINISH63.0 MICROINCHES OUTSIDE DIAMETER SURFACE OF BODY
SURFACE FINISH125.0 MICROINCHES RIGHT END SURFACE OF BODY
SURFACE FINISH125.0 MICROINCHES LEFT END SURFACE OF BODY
SURFACE FINISH125.0 MICROINCHES INNER MEMBER
CORNER SHAPESQUARE ALL CORNERS
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMIL-A-8625 MIL SPEC SINGLE TREATMENT RESPONSE OUTER LAYER
BODY OUTSIDE DIAMETER0.4381 INCHES MINIMUM AND 0.4386 INCHES MAXIMUM IN
STYLE DESIGNATORSOLID, PLAIN, NO OUTSIDE FLANGES
OVERALL LENGTH0.1750 INCHES MINIMUM AND 0.1850 INCHES MAXIMUM IN
BODY INSIDE DIAMETER0.3125 INCHES MINIMUM AND 0.3135 INCHES MAXIMUM IN
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 3
121-1205-018Reference document
Same NSN cross-reference
Reference document — Secondary reference
BJ10TF018Reference document
Same NSN cross-reference
Reference document — Secondary reference
GB528BD5D018Reference document
Same NSN cross-reference
Reference document — Vendor item drawing reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Terminal item — stock exhausted; no further procurementNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 91386-05-018?
91386-05-018 is a BEARING,SLEEVE.
What parts can replace 91386-05-018?
There are 3 known substitutes for 91386-05-018: 121-1205-018, BJ10TF018, GB528BD5D018. Substitute compatibility should be verified for your specific system.
What is the NSN for 91386-05-018?
91386-05-018 is cataloged in the U.S. Government catalog under NSN 3120-01-042-8906. 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.