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Technical Data Sheet
PartsTable / COMPONENT / ST-975
ST-975 ✓ 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 material: STEEL OVERALL, overall_width: 0.5938 INCHES NOMINAL IN, outside_diameter: 3.6718 INCHES NOMINAL IN, style_designator: NORMAL ANGLE, backface_corner_radius: 0.0469 INCHES NOMINAL IN, standard_tolerance_designation: AFBMA CLASS 2. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-00-100-0299, 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
ST-975
NSN: 3110-00-100-0299
FSC: 3110
CAGE: 31007 — NAVISTAR INTERNATIONAL CORPORATION DBA NAVISTAR (USA)
SPECIFICATIONS
materialSTEEL OVERALL
overall_width0.5938 INCHES NOMINAL IN
outside_diameter3.6718 INCHES NOMINAL IN
style_designatorNORMAL ANGLE
backface_corner_radius0.0469 INCHES NOMINAL IN
standard_tolerance_designationAFBMA CLASS 2
NSN3110-00-100-0299
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: ST-975 · 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
•
STANDARD TOLERANCE DESIGNATION: AFBMA CLASS 2
•
STYLE DESIGNATOR: NORMAL ANGLE
•
MATERIAL: STEEL OVERALL
•
BACKFACE CORNER RADIUS: 0.0469 INCHES NOMINAL IN
•
OUTSIDE DIAMETER: 3.6718 INCHES NOMINAL IN
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)
OVERALL WIDTH0.5938 INCHES NOMINAL IN
STANDARD TOLERANCE DESIGNATIONAFBMA CLASS 2
STYLE DESIGNATORNORMAL ANGLE
MATERIALSTEEL OVERALL
BACKFACE CORNER RADIUS0.0469 INCHES NOMINAL IN
OUTSIDE DIAMETER3.6718 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 13
KC2742Interchangeable
interchangeable cross-reference
interchangeable
7409940Interchangeable
interchangeable cross-reference
interchangeable
82312S41-34PC30Interchangeable
interchangeable cross-reference
interchangeable
181405Interchangeable
interchangeable cross-reference
interchangeable
950452Interchangeable
interchangeable cross-reference
interchangeable
8327881Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is ST-975?
ST-975 is a CUP,TAPERED ROLLER BEARING.
What parts can replace ST-975?
There are 13 known substitutes for ST-975: KC2742, 7409940, 82312S41-34PC30 and 10 more. Substitute compatibility should be verified for your specific system.
Is ST-975 still available?
ST-975 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