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Technical Data Sheet
PartsTable / COMPONENT / PT4-12
PT4-12 ✓ Verified by PartsTable
— · TAPERED BEARING
WHAT YOU NEED TO KNOW
Cup and cone sold separately — confirm both needed Timken series numbers indicate dimensions
Cup and cone NOT sold as set — verify order
PRODUCT OVERVIEW

The MICROCIRCUIT,DIGITAL is a the manufacturer industrial component. Key specifications include material: STEEL COMP 440A OR STEEL COMP 440B OR STEEL COMP 440C OVERALL A, style_designator: BALL, rolling_element_diameter: 0.3750 INCHES NOMINAL IN, standard_tolerance_designation: AFBMA STD TOLERANCE FOR BALLS, GRADE 10, material_document_and_classification: AISI ASSN STD ALL MATERIAL RESPONSES OVERALL. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-00-248-5865, 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
PT4-12
NSN: 3110-00-248-5865
FSC: 3110
CAGE: 29440 — W. M. BERG, INC. (USA)
SPECIFICATIONS
materialSTEEL COMP 440A OR STEEL COMP 440B OR STEEL COMP 440C OVERALL A
style_designatorBALL
rolling_element_diameter0.3750 INCHES NOMINAL IN
standard_tolerance_designationAFBMA STD TOLERANCE FOR BALLS, GRADE 10
material_document_and_classificationAISI ASSN STD ALL MATERIAL RESPONSES OVERALL
NSN3110-00-248-5865
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: PT4-12 · OEM ⚠ VERIFY BEFORE ORDERING Cup and cone sold separately — verify you are ordering BOTH parts or the correct component. Always replace cup and cone together — mismatched wear = premature failure ✓ BROKER TIP Taper angle determines axial load capacity. Steeper angle = higher axial load rating. Timken series numbers indicate dimensions — cross-reference carefully PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
ROLLING ELEMENT DIAMETER: 0.3750 INCHES NOMINAL IN
•
STANDARD TOLERANCE DESIGNATION: AFBMA STD TOLERANCE FOR BALLS, GRADE 10
•
MATERIAL: STEEL COMP 440A OR STEEL COMP 440B OR STEEL COMP 440C OVERALL A
•
MATERIAL DOCUMENT AND CLASSIFICATION: AISI ASSN STD ALL MATERIAL RESPONSES OVERALL
•
STYLE DESIGNATOR: BALL
TECHNICAL CHARACTERISTICS (FLIS)
ROLLING ELEMENT DIAMETER0.3750 INCHES NOMINAL IN
STANDARD TOLERANCE DESIGNATIONAFBMA STD TOLERANCE FOR BALLS, GRADE 10
MATERIALSTEEL COMP 440A OR STEEL COMP 440B OR STEEL COMP 440C OVERALL A
MATERIAL DOCUMENT AND CLASSIFICATIONAISI ASSN STD ALL MATERIAL RESPONSES OVERALL
STYLE DESIGNATORBALL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 19
39298Interchangeable
interchangeable cross-reference
interchangeable
6002-151Interchangeable
interchangeable cross-reference
interchangeable
40223Interchangeable
interchangeable cross-reference
interchangeable
SP2860Interchangeable
interchangeable cross-reference
interchangeable
A214416P11Interchangeable
interchangeable cross-reference
interchangeable
AC22-4Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is PT4-12?
PT4-12 is a MICROCIRCUIT,DIGITAL.
What parts can replace PT4-12?
There are 19 known substitutes for PT4-12: 39298, 6002-151, 40223 and 16 more. Substitute compatibility should be verified for your specific system.
Is PT4-12 still available?
PT4-12 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026