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4M381BC8-054 — BUSHING,SLEEVE

✓ Government record, cited
— · BALL BEARING
PRODUCT OVERVIEW

4M381BC8-054: BUSHING,SLEEVE.

The BUSHING,SLEEVE is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY 172 OVERALL, corner_shape: SQUARE ALL CORNERS, overall_length: 0.5400 INCHES NOMINAL IN, style_designator: SOLID, PLAIN, NO OUTSIDE FLANGES, surface_treatment: ALUMINUM ALLOY OUTSIDE DIAMETER SURFACE OF BODY, body_inside_diameter: 0.4893 INCHES MINIMUM AND 0.4900 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 3120-01-480-8263, 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
4M381BC8-054
NSN: 3120-01-480-8263
FSC: 3120 — Bearings, Plain, Unmounted
CAGE: 76301 — THE BOEING COMPANY DIV DEFENSE (USA)
SPECIFICATIONS
materialCOPPER ALLOY 172 OVERALL
corner_shapeSQUARE ALL CORNERS
overall_length0.5400 INCHES NOMINAL IN
style_designatorSOLID, PLAIN, NO OUTSIDE FLANGES
surface_treatmentALUMINUM ALLOY OUTSIDE DIAMETER SURFACE OF BODY
body_inside_diameter0.4893 INCHES MINIMUM AND 0.4900 INCHES MAXIMUM IN
body_outside_diameter0.6264 INCHES MINIMUM AND 0.6272 INCHES MAXIMUM IN
end_item_identificationF18 E/F
criticality_code_justificationAGAV
material_document_and_classificationASTM B196 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
part_name_assigned_by_controlling_agencyBUSHING,SLEEVE-PLAIN,PRESS FIT
surface_treatment_document_and_classificationMIL-C-83488,TYPE II,CLASS 3 MIL SPEC SINGLE TREATMENT RESPONSE OUTSIDE DIAMETER SURFACE OF BODY
NSN3120-01-480-8263
COMPONENT DIAGRAM
BALL BEARING — SEAL TYPE DETERMINES MAINTENANCE OD: — · BORE: — · WIDTH: — SEAL: Open · PN: 4M381BC8-054 · 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
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: MIL-C-83488,TYPE II,CLASS 3 MIL SPEC SINGLE TREATMENT RESPONSE OUTSIDE DIAMETER SURFACE OF BODY
•
BODY OUTSIDE DIAMETER: 0.6264 INCHES MINIMUM AND 0.6272 INCHES MAXIMUM IN
•
CRITICALITY CODE JUSTIFICATION: AGAV
•
STYLE DESIGNATOR: SOLID, PLAIN, NO OUTSIDE FLANGES
•
MATERIAL DOCUMENT AND CLASSIFICATION: ASTM B196 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
•
BODY INSIDE DIAMETER: 0.4893 INCHES MINIMUM AND 0.4900 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
CORNER SHAPESQUARE ALL CORNERS
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMIL-C-83488,TYPE II,CLASS 3 MIL SPEC SINGLE TREATMENT RESPONSE OUTSIDE DIAMETER SURFACE OF BODY
BODY OUTSIDE DIAMETER0.6264 INCHES MINIMUM AND 0.6272 INCHES MAXIMUM IN
CRITICALITY CODE JUSTIFICATIONAGAV
STYLE DESIGNATORSOLID, PLAIN, NO OUTSIDE FLANGES
MATERIAL DOCUMENT AND CLASSIFICATIONASTM B196 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
OVERALL LENGTH0.5400 INCHES NOMINAL IN
BODY INSIDE DIAMETER0.4893 INCHES MINIMUM AND 0.4900 INCHES MAXIMUM IN
SURFACE TREATMENTALUMINUM ALLOY OUTSIDE DIAMETER SURFACE OF BODY
PART NAME ASSIGNED BY CONTROLLING AGENCYBUSHING,SLEEVE-PLAIN,PRESS FIT
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

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 4M381BC8-054?
4M381BC8-054 is a BUSHING,SLEEVE.
What is the NSN for 4M381BC8-054?
4M381BC8-054 is cataloged in the U.S. Government catalog under NSN 3120-01-480-8263. 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.