1338M57 — BEARING,PLAIN,SPHERICAL

✓ Government record, cited

— · BALL BEARING

PRODUCT OVERVIEW

1338M57: BEARING,PLAIN,SPHERICAL.

The BEARING,PLAIN,SPHERICAL is a the manufacturer industrial component. Key specifications include material: COBALT COMP 6 OVERALL, corner_shape: SQUARE ALL CORNERS, overall_length: 0.4400 INCHES MINIMUM AND 0.4420 INCHES MAXIMUM IN, surface_finish: 63.0 MICROINCHES LEFT END SURFACE, hardness_rating: 37.0 ROCKWELL C NOMINAL OVERALL, style_designator: SOLID. This part is cataloged in the U.S.

Government catalog under NSN 3120-01-293-9404, 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

1338M57

NSN: 3120-01-293-9404
FSC: 3120 — Bearings, Plain, Unmounted
CAGE: 07482 — GENERAL ELECTRIC COMPANY (USA)

SPECIFICATIONS

material	COBALT COMP 6 OVERALL
corner_shape	SQUARE ALL CORNERS
overall_length	0.4400 INCHES MINIMUM AND 0.4420 INCHES MAXIMUM IN
surface_finish	63.0 MICROINCHES LEFT END SURFACE
hardness_rating	37.0 ROCKWELL C NOMINAL OVERALL
style_designator	SOLID
body_inside_diameter	0.5380 INCHES MINIMUM AND 0.5383 INCHES MAXIMUM IN
spherical_body_diameter	0.7800 INCHES MINIMUM AND 0.7813 INCHES MAXIMUM IN
material_document_and_classification	AMS 5387 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
NSN	3120-01-293-9404

COMPONENT DIAGRAM

KEY FEATURES

•

SURFACE FINISH: 63.0 MICROINCHES RIGHT END SURFACE

•

CORNER SHAPE: SQUARE ALL CORNERS

•

HARDNESS RATING: 37.0 ROCKWELL C NOMINAL OVERALL

•

STYLE DESIGNATOR: SOLID

•

MATERIAL DOCUMENT AND CLASSIFICATION: AMS 5387 ASSN STD SINGLE MATERIAL RESPONSE OVERALL

TECHNICAL CHARACTERISTICS

SURFACE FINISH	63.0 MICROINCHES RIGHT END SURFACE
SURFACE FINISH	63.0 MICROINCHES LEFT END SURFACE
SURFACE FINISH	32.0 MICROINCHES INSIDE DIAMETER SURFACE OF BODY
CORNER SHAPE	SQUARE ALL CORNERS
HARDNESS RATING	37.0 ROCKWELL C NOMINAL OVERALL
STYLE DESIGNATOR	SOLID
MATERIAL DOCUMENT AND CLASSIFICATION	AMS 5387 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
OVERALL LENGTH	0.4400 INCHES MINIMUM AND 0.4420 INCHES MAXIMUM IN
BODY INSIDE DIAMETER	0.5380 INCHES MINIMUM AND 0.5383 INCHES MAXIMUM IN
MATERIAL	COBALT COMP 6 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

1338M57P01Same NSN cross-reference

Same NSN cross-reference

Also cataloged under this NSN

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 1338M57?

1338M57 is a BEARING,PLAIN,SPHERICAL.

What parts can replace 1338M57?

There is 1 known substitute for 1338M57: 1338M57P01. Substitute compatibility should be verified for your specific system.

What is the NSN for 1338M57?

1338M57 is cataloged in the U.S. Government catalog under NSN 3120-01-293-9404. This indicates validated use in U.S. government and defense supply chains.

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1338M57 — BEARING,PLAIN,SPHERICAL

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