PartsTable
Technical Data Sheet
ST251 ✓ Verified by PartsTable
· MRO · MRO_GENERAL
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 SHELL,ELECTRICAL CONNECTOR is a the manufacturer industrial component. Key specifications include drive_size: 5.25, design_type: HARD CARD, unit_design: INTERNAL, drive_height: FULL, power_source: EXTERNAL, tracks_per_inch: 777.0. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-00-155-6723, 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
MRO MRO_GENERAL ST251
NSN: 3110-00-155-6723
FSC: 3110
CAGE: 31007 — NAVISTAR INTERNATIONAL CORPORATION DBA NAVISTAR (USA)
SPECIFICATIONS
drive_size5.25
design_typeHARD CARD
unit_designINTERNAL
drive_heightFULL
power_sourceEXTERNAL
drive_quantity1
tracks_per_inch777.0
special_featuresSHOCK RESISTANT, HIGHT PERFORMANCE, HIGHT-VOLUME, INDUSTRY PROVEN, STANDARD MOUNTING AND VOLTAGES, 12 WATTS OF POWER SINGLE PRINTED CIRCUIT BOARD
data_storage_capacity42.80 MEGABYTES
head_type_and_quantity6 READ/WRITE
sector_type_and_quantity17 HARD
access_time_in_milliseconds28.0
NSN3110-00-155-6723
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: ST251 · 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
SURFACE FINISH: GROUND
OVERALL OUTSIDE DIAMETER: 100.00 MILLIMETERS NOMINAL MM
MATERIAL: STEEL INNER RING
STYLE DESIGNATOR: LOADING GROOVE, NON-SEPARABLE
FEATURES PROVIDED: SNAP RING-GROOVE MOUNTING AND MOUNTING GROOVE
BORE DIAMETER: 45.00 MILLIMETERS NOMINAL MM
TECHNICAL CHARACTERISTICS (FLIS)
SURFACE FINISHGROUND
OVERALL OUTSIDE DIAMETER100.00 MILLIMETERS NOMINAL MM
MATERIALSTEEL INNER RING
MATERIALSTEEL OUTER RING
STYLE DESIGNATORLOADING GROOVE, NON-SEPARABLE
MATERIALSTEEL BALL
FEATURES PROVIDEDSNAP RING-GROOVE MOUNTING AND MOUNTING GROOVE
BORE DIAMETER45.00 MILLIMETERS NOMINAL MM
INTERNAL FIT-UP DESIGNATIONSTANDARD
OVERALL WIDTH25.0 MILLIMETERS NOMINAL MM
VERIFIED SUBSTITUTES & CROSS-REFERENCES 25
309GInterchangeable
interchangeable cross-reference
interchangeable
954137Interchangeable
interchangeable cross-reference
interchangeable
603T2Interchangeable
interchangeable cross-reference
interchangeable
81022Interchangeable
interchangeable cross-reference
interchangeable
22FP2-832Interchangeable
interchangeable cross-reference
interchangeable
7000138228Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is ST251?
ST251 is a SHELL,ELECTRICAL CONNECTOR. It is classified as a MRO (MRO_GENERAL).
What parts can replace ST251?
There are 25 known substitutes for ST251: 309G, 954137, 603T2 and 22 more. Substitute compatibility should be verified for your specific system.
Is ST251 still available?
ST251 is currently cancelled.
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