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4M139BC7-15 — BUSHING,SLEEVE

✓ Government record, cited
— · BALL BEARING
PRODUCT OVERVIEW

4M139BC7-15: BUSHING,SLEEVE.

The BUSHING,SLEEVE is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY OVERALL, overall_length: 0.150 INCHES NOMINAL IN, special_features: MATERIAL: BERYLLIUM COPPER, NO FINISH, part_name_assigned_by_controlling_agency: BUSHING,SLEEVE-CLOSE TOLERANCE FLANGE,PRESS FIT,REDUCED CHAMFER AND UNDERCUT,BRONZE CORROSION RESISTANT STEEL AND BE CU. This part is cataloged in the U.S.

Government catalog under NSN 3120-01-436-3370, 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
4M139BC7-15
NSN: 3120-01-436-3370
FSC: 3120 — Bearings, Plain, Unmounted
CAGE: 65910 — MAYDAY MANUFACTURING CO. (USA)
SPECIFICATIONS
materialCOPPER ALLOY OVERALL
overall_length0.150 INCHES NOMINAL IN
special_featuresMATERIAL: BERYLLIUM COPPER, NO FINISH
part_name_assigned_by_controlling_agencyBUSHING,SLEEVE-CLOSE TOLERANCE FLANGE,PRESS FIT,REDUCED CHAMFER AND UNDERCUT,BRONZE CORROSION RESISTANT STEEL AND BE CU
NSN3120-01-436-3370
COMPONENT DIAGRAM
BALL BEARING — SEAL TYPE DETERMINES MAINTENANCE OD: — · BORE: — · WIDTH: — SEAL: Open · PN: 4M139BC7-15 · 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
•
MATERIAL: COPPER ALLOY OVERALL
TECHNICAL CHARACTERISTICS
OVERALL LENGTH0.150 INCHES NOMINAL IN
SPECIAL FEATURESMATERIAL: BERYLLIUM COPPER, NO FINISH
PART NAME ASSIGNED BY CONTROLLING AGENCYBUSHING,SLEEVE-CLOSE TOLERANCE FLANGE,PRESS FIT,REDUCED CHAMFER AND UNDERCUT,BRONZE CORROSION RESISTANT STEEL AND BE CU
MATERIALCOPPER ALLOY 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

No substitute or cross-reference records for this part.

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 4M139BC7-15?
4M139BC7-15 is a BUSHING,SLEEVE.
What is the NSN for 4M139BC7-15?
4M139BC7-15 is cataloged in the U.S. Government catalog under NSN 3120-01-436-3370. 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.