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Technical Data Sheet
PartsTable / COMPONENT / M527
M527 ✓ 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 CUP,TAPERED ROLLER BEARING is a the manufacturer tape media or drive component used in enterprise backup, archival, and disaster recovery environments. Key specifications include thread_class: 2A A, thread_length: 0.250 INCHES NOMINAL IN, screw_material: STEEL, thread_direction: RIGHT-HAND, nominal_thread_diameter: 0.138 INCHES IN, thread_quantity_per_inch: 32. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-00-101-1779, 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
M527
NSN: 3110-00-101-1779
FSC: 3110
CAGE: 80339 — BURKE DIV POWERMATIC/HOUDAILLE INC (USA)
SPECIFICATIONS
thread_class2A A
thread_length0.250 INCHES NOMINAL IN
screw_materialSTEEL
thread_directionRIGHT-HAND
nominal_thread_diameter0.138 INCHES IN
thread_quantity_per_inch32
thread_series_designatorUNIFIED NATIONAL COARSE (UNC)
NSN3110-00-101-1779
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: M527 · 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
•
OUTSIDE DIAMETER: 2.8345 INCHES NOMINAL IN
•
STYLE DESIGNATOR: NORMAL ANGLE
•
BACKFACE CORNER RADIUS: 0.0625 INCHES NOMINAL IN
•
MATERIAL: STEEL OVERALL
•
STANDARD TOLERANCE DESIGNATION: AFBMA CLASS 2
TYPICAL APPLICATIONS
  • Long-term data archival and compliance retention
  • Offsite backup and disaster recovery
  • Air-gapped ransomware protection
  • Cold storage tier for infrequently accessed data
TECHNICAL CHARACTERISTICS (FLIS)
OUTSIDE DIAMETER2.8345 INCHES NOMINAL IN
STYLE DESIGNATORNORMAL ANGLE
OVERALL WIDTH0.5625 INCHES NOMINAL IN
BACKFACE CORNER RADIUS0.0625 INCHES NOMINAL IN
MATERIALSTEEL OVERALL
STANDARD TOLERANCE DESIGNATIONAFBMA CLASS 2
VERIFIED SUBSTITUTES & CROSS-REFERENCES 12
1250-30102BInterchangeable
interchangeable cross-reference
interchangeable
900029-3Interchangeable
interchangeable cross-reference
interchangeable
VA12W0453-3Interchangeable
interchangeable cross-reference
interchangeable
52056Interchangeable
interchangeable cross-reference
interchangeable
52-084Interchangeable
interchangeable cross-reference
interchangeable
19283Interchangeable
Galaxy Buds Live
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is M527?
M527 is a CUP,TAPERED ROLLER BEARING.
What parts can replace M527?
There are 12 known substitutes for M527: 1250-30102B, 900029-3, VA12W0453-3 and 9 more. Substitute compatibility should be verified for your specific system.
What is the NSN for M527?
M527 is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-00-101-1779. 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: July 2026