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MIL-B-913/4 — Technical Data Sheet

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— · 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 BEARING,BALL,ANNULAR is a the manufacturer industrial component. Key specifications include material: STEEL COMP 440C INNER RING, bore_shape: STRAIGHT, bore_diameter: 0.2754 INCHES MINIMUM AND 0.2756 INCHES MAXIMUM IN, overall_width: 0.2746 INCHES MINIMUM AND 0.2756 INCHES MAXIMUM IN, load_direction: RADIAL, surface_finish: GROUND. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-01-053-2937, 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
MIL-B-913/4
NSN: 3110-01-053-2937
FSC: 3110
CAGE: 81349 — MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
SPECIFICATIONS
materialSTEEL COMP 440C INNER RING
bore_shapeSTRAIGHT
bore_diameter0.2754 INCHES MINIMUM AND 0.2756 INCHES MAXIMUM IN
overall_width0.2746 INCHES MINIMUM AND 0.2756 INCHES MAXIMUM IN
load_directionRADIAL
surface_finishGROUND
shield_quantity2
special_features5 PCT TO 10 PCT FILL GREASE
style_designatorNON-LOADING GROOVE, NON-SEPARABLE
internal_clearance0.0005 INCHES MINIMUM RADIAL AND 0.0008 INCHES MAXIMUM RADIAL IN
lubrication_materialGREASE
overall_outside_diameter0.8659 INCHES MINIMUM AND 0.8661 INCHES MAXIMUM IN
NSN3110-01-053-2937
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: MIL-B-913/4 · 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
•
MATERIAL: STEEL CORROSION RESISTING SHIELD
•
BORE SHAPE: STRAIGHT
•
INTERNAL CLEARANCE: 0.0005 INCHES MINIMUM RADIAL AND 0.0008 INCHES MAXIMUM RADIAL IN
•
SHIELD QUANTITY: 2
•
RETAINER FABRICATION METHOD: PRESSED
•
STANDARD TOLERANCE DESIGNATION: ABEC NO. 7P
•
LOAD DIRECTION: RADIAL
TECHNICAL CHARACTERISTICS (FLIS)
MATERIALSTEEL CORROSION RESISTING SHIELD
BORE SHAPESTRAIGHT
INTERNAL CLEARANCE0.0005 INCHES MINIMUM RADIAL AND 0.0008 INCHES MAXIMUM RADIAL IN
SHIELD QUANTITY2
RETAINER FABRICATION METHODPRESSED
STANDARD TOLERANCE DESIGNATIONABEC NO. 7P
SPECIAL FEATURESFILL 30 PCT WITH SPECIFIED LUBRICANT
LOAD DIRECTIONRADIAL
SURFACE FINISHGROUND
LUBRICATION MATERIALGREASE
VERIFIED SUBSTITUTES & CROSS-REFERENCES 24
38X2K3Interchangeable
interchangeable cross-reference
interchangeable
M913/01JC7C3NE1Interchangeable
interchangeable cross-reference
interchangeable
38SSTX2K3Interchangeable
interchangeable cross-reference
interchangeable
R38B31K25Interchangeable
interchangeable cross-reference
interchangeable
4132238-1A5AInterchangeable
interchangeable cross-reference
interchangeable
4132238-2A5AInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is MIL-B-913/4?
MIL-B-913/4 is a BEARING,BALL,ANNULAR.
What parts can replace MIL-B-913/4?
There are 24 known substitutes for MIL-B-913/4: 38X2K3, M913/01JC7C3NE1, 38SSTX2K3 and 21 more. Substitute compatibility should be verified for your specific system.
What is the NSN for MIL-B-913/4?
MIL-B-913/4 is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-01-053-2937. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: September 2026