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4M139BC14-43 — BUSHING,SLEEVE

✓ Government record, cited
— · BALL BEARING
PRODUCT OVERVIEW

4M139BC14-43: BUSHING,SLEEVE.

The BUSHING,SLEEVE is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY 172 AND COPPER ALLOY 173 OVERALL, flange_width: 0.0600 INCHES MINIMUM AND 0.0620 INCHES MAXIMUM IN, overall_length: 0.4920 INCHES NOMINAL IN, body_inside_diameter: 0.8685 INCHES MINIMUM AND 0.8700 INCHES MAXIMUM IN, body_outside_diameter: 1.0648 INCHES MINIMUM AND 1.0658 INCHES MAXIMUM IN, flange_outside_diameter: 1.2400 INCHES MINIMUM AND 1.2600 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 3120-01-256-9773, 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
4M139BC14-43
NSN: 3120-01-256-9773
FSC: 3120 — Bearings, Plain, Unmounted
CAGE: 23294 — AVALON MACHINE PRODUCTS INC (USA)
SPECIFICATIONS
materialCOPPER ALLOY 172 AND COPPER ALLOY 173 OVERALL
flange_width0.0600 INCHES MINIMUM AND 0.0620 INCHES MAXIMUM IN
overall_length0.4920 INCHES NOMINAL IN
body_inside_diameter0.8685 INCHES MINIMUM AND 0.8700 INCHES MAXIMUM IN
body_outside_diameter1.0648 INCHES MINIMUM AND 1.0658 INCHES MAXIMUM IN
flange_outside_diameter1.2400 INCHES MINIMUM AND 1.2600 INCHES MAXIMUM IN
NSN3120-01-256-9773
COMPONENT DIAGRAM
BALL BEARING — SEAL TYPE DETERMINES MAINTENANCE OD: — · BORE: — · WIDTH: — SEAL: Open · PN: 4M139BC14-43 · 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
•
FLANGE OUTSIDE DIAMETER: 1.2400 INCHES MINIMUM AND 1.2600 INCHES MAXIMUM IN
•
BODY OUTSIDE DIAMETER: 1.0648 INCHES MINIMUM AND 1.0658 INCHES MAXIMUM IN
•
BODY INSIDE DIAMETER: 0.8685 INCHES MINIMUM AND 0.8700 INCHES MAXIMUM IN
•
FLANGE WIDTH: 0.0600 INCHES MINIMUM AND 0.0620 INCHES MAXIMUM IN
•
MATERIAL: COPPER ALLOY 172 AND COPPER ALLOY 173 OVERALL
TECHNICAL CHARACTERISTICS
FLANGE OUTSIDE DIAMETER1.2400 INCHES MINIMUM AND 1.2600 INCHES MAXIMUM IN
BODY OUTSIDE DIAMETER1.0648 INCHES MINIMUM AND 1.0658 INCHES MAXIMUM IN
OVERALL LENGTH0.4920 INCHES NOMINAL IN
BODY INSIDE DIAMETER0.8685 INCHES MINIMUM AND 0.8700 INCHES MAXIMUM IN
FLANGE WIDTH0.0600 INCHES MINIMUM AND 0.0620 INCHES MAXIMUM IN
MATERIALCOPPER ALLOY 172 AND COPPER ALLOY 173 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 1
4M139BC14-043Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
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 4M139BC14-43?
4M139BC14-43 is a BUSHING,SLEEVE.
What parts can replace 4M139BC14-43?
There is 1 known substitute for 4M139BC14-43: 4M139BC14-043. Substitute compatibility should be verified for your specific system.
What is the NSN for 4M139BC14-43?
4M139BC14-43 is cataloged in the U.S. Government catalog under NSN 3120-01-256-9773. 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.