4M139BC4-18 — BUSHING,SLEEVE

✓ Government record, cited

— · BALL BEARING

PRODUCT OVERVIEW

4M139BC4-18: BUSHING,SLEEVE.

The BUSHING,SLEEVE is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY 172 OVERALL, corner_shape: SQUARE OUTSIDE LEFT CORNER, flange_width: 0.0600 INCHES MINIMUM AND 0.0620 INCHES MAXIMUM IN, overall_length: 0.2350 INCHES MINIMUM AND 0.2470 INCHES MAXIMUM IN, style_designator: SOLID, EXTERNAL FLANGE ONE END, body_inside_diameter: 0.2435 INCHES MINIMUM AND 0.2450 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 3120-01-129-9149, 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

4M139BC4-18

NSN: 3120-01-129-9149
FSC: 3120 — Bearings, Plain, Unmounted
CAGE: 76301 — THE BOEING COMPANY DIV DEFENSE (USA)

SPECIFICATIONS

material	COPPER ALLOY 172 OVERALL
corner_shape	SQUARE OUTSIDE LEFT CORNER
flange_width	0.0600 INCHES MINIMUM AND 0.0620 INCHES MAXIMUM IN
overall_length	0.2350 INCHES MINIMUM AND 0.2470 INCHES MAXIMUM IN
style_designator	SOLID, EXTERNAL FLANGE ONE END
body_inside_diameter	0.2435 INCHES MINIMUM AND 0.2450 INCHES MAXIMUM IN
body_outside_diameter	0.3766 INCHES MINIMUM AND 0.3771 INCHES MAXIMUM IN
flange_outside_diameter	0.4900 INCHES MINIMUM AND 0.5100 INCHES MAXIMUM IN
material_document_and_classification	QQ-C-530 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
NSN	3120-01-129-9149

COMPONENT DIAGRAM

KEY FEATURES

•

CORNER SHAPE: SQUARE INSIDE RIGHT CORNER

•

FLANGE OUTSIDE DIAMETER: 0.4900 INCHES MINIMUM AND 0.5100 INCHES MAXIMUM IN

•

BODY OUTSIDE DIAMETER: 0.3766 INCHES MINIMUM AND 0.3771 INCHES MAXIMUM IN

TECHNICAL CHARACTERISTICS

CORNER SHAPE	SQUARE INSIDE RIGHT CORNER
CORNER SHAPE	SQUARE OUTSIDE RIGHT CORNER
CORNER SHAPE	SQUARE OUTSIDE LEFT CORNER
CORNER SHAPE	SQUARE LEFT FLANGE OUTSIDE RIGHT CORNER
CORNER SHAPE	SQUARE INSIDE LEFT CORNER
CORNER SHAPE	UNDERCUT LEFT FLANGE BODY CORNER
FLANGE OUTSIDE DIAMETER	0.4900 INCHES MINIMUM AND 0.5100 INCHES MAXIMUM IN
BODY OUTSIDE DIAMETER	0.3766 INCHES MINIMUM AND 0.3771 INCHES MAXIMUM IN
STYLE DESIGNATOR	SOLID, EXTERNAL FLANGE ONE END
MATERIAL DOCUMENT AND CLASSIFICATION	QQ-C-530 FED SPEC SINGLE MATERIAL RESPONSE 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

10130599Reference document

Same NSN cross-reference

Reference document — Informative reference only

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 4M139BC4-18?

4M139BC4-18 is a BUSHING,SLEEVE.

What parts can replace 4M139BC4-18?

There is 1 known substitute for 4M139BC4-18: 10130599. Substitute compatibility should be verified for your specific system.

What is the NSN for 4M139BC4-18?

4M139BC4-18 is cataloged in the U.S. Government catalog under NSN 3120-01-129-9149. This indicates validated use in U.S. government and defense supply chains.

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