439B903 — BUSHING,SLEEVE

✓ Government record, cited

— · BALL BEARING

PRODUCT OVERVIEW

439B903: BUSHING,SLEEVE.

The BUSHING,SLEEVE is a the manufacturer industrial component. Key specifications include material: STEEL COMP 135M OVERALL, corner_shape: UNDERCUT CENTER FLANGE LEFT BODY CORNER, flange_width: 0.5000 INCHES NOMINAL IN, overall_length: 3.0000 INCHES NOMINAL IN, surface_finish: 63.0 MICROINCHES OUTSIDE DIAMETER SURFACE OF BODY, style_designator: SOLID, EXTERNAL FLANGE. This part is cataloged in the U.S.

Government catalog under NSN 3120-01-231-4530, 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

439B903

NSN: 3120-01-231-4530
FSC: 3120 — Bearings, Plain, Unmounted
CAGE: 01289 — GENERAL ELECTRIC COMPANY (USA)

SPECIFICATIONS

material	STEEL COMP 135M OVERALL
corner_shape	UNDERCUT CENTER FLANGE LEFT BODY CORNER
flange_width	0.5000 INCHES NOMINAL IN
overall_length	3.0000 INCHES NOMINAL IN
surface_finish	63.0 MICROINCHES OUTSIDE DIAMETER SURFACE OF BODY
style_designator	SOLID, EXTERNAL FLANGE
body_inside_diameter	0.9990 INCHES MINIMUM AND 1.0000 INCHES MAXIMUM IN
end_to_flange_distance	2.0000 INCHES NOMINAL IN
left_end_body_diameter	2.1245 INCHES MINIMUM AND 2.1250 INCHES MAXIMUM IN
flange_outside_diameter	2.6200 INCHES NOMINAL IN
right_end_body_diameter	2.0000 INCHES NOMINAL IN
lubricant_accommodation_style	GROOVED CIRCULAR
NSN	3120-01-231-4530

COMPONENT DIAGRAM

KEY FEATURES

•

SURFACE FINISH: 63.0 MICROINCHES OUTSIDE DIAMETER SURFACE OF BODY

•

CORNER SHAPE: ROUND CENTER FLANGE RIGHT BODY CORNER

TECHNICAL CHARACTERISTICS

SURFACE FINISH	63.0 MICROINCHES OUTSIDE DIAMETER SURFACE OF BODY
SURFACE FINISH	32.0 MICROINCHES INSIDE DIAMETER SURFACE OF BODY
SURFACE FINISH	63.0 MICROINCHES LEFT END SURFACE OF FLANGE
CORNER SHAPE	ROUND CENTER FLANGE RIGHT BODY CORNER
CORNER SHAPE	SQUARE OUTSIDE RIGHT CORNER
CORNER SHAPE	SQUARE CENTER FLANGE OUTSIDE LEFT CORNER
CORNER SHAPE	ROUND INSIDE LEFT CORNER
CORNER SHAPE	CHAMFERED OUTSIDE LEFT CORNER
CORNER SHAPE	ROUND INSIDE RIGHT CORNER
CORNER SHAPE	CHAMFERED CENTER FLANGE OUTSIDE RIGHT CORNER

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 2

439B903-001Reference document

Same NSN cross-reference

Reference document — Secondary reference

PL-577E907 PIECE 43Same 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 439B903?

439B903 is a BUSHING,SLEEVE.

What parts can replace 439B903?

There are 2 known substitutes for 439B903: 439B903-001, PL-577E907 PIECE 43. Substitute compatibility should be verified for your specific system.

What is the NSN for 439B903?

439B903 is cataloged in the U.S. Government catalog under NSN 3120-01-231-4530. This indicates validated use in U.S. government and defense supply chains.

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