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Technical Data Sheet
PartsTable / COMPONENT / AMMS3K
AMMS3K ✓ 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 BEARING,BALL,ANNULAR is a the manufacturer industrial component. Key specifications include material: STEEL CORROSION RESISTING OVERALL, bore_shape: STRAIGHT, bore_diameter: 0.3750 INCHES NOMINAL IN, overall_width: 0.2187 INCHES NOMINAL 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 3110-00-897-2944, 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
AMMS3K
NSN: 3110-00-897-2944
FSC: 3110
CAGE: 21335 — TIMKEN CO DIV THE TIMKEN COMPANY (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING OVERALL
bore_shapeSTRAIGHT
bore_diameter0.3750 INCHES NOMINAL IN
overall_width0.2187 INCHES NOMINAL IN
load_directionRADIAL
surface_finishGROUND
special_featuresINNER RING RUNOUT 0.0001 IN. ALSO OUTER RING RUNOUT 0.0002 IN. IN
style_designatorNON-LOADING GROOVE, NON-SEPARABLE
internal_clearance0.0002 INCHES MINIMUM RADIAL AND 0.0005 INCHES MAXIMUM RADIAL IN
overall_outside_diameter0.8750 INCHES NOMINAL IN
nondefinitive_spec/std_data115 TYPE AND 50 GRADE
retainer_fabrication_methodPRESSED
NSN3110-00-897-2944
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: AMMS3K · 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
•
RETAINER FABRICATION METHOD: PRESSED
•
INTERNAL CLEARANCE: 0.0002 INCHES MINIMUM RADIAL AND 0.0005 INCHES MAXIMUM RADIAL IN
•
STYLE DESIGNATOR: NON-LOADING GROOVE, NON-SEPARABLE
•
NONDEFINITIVE SPEC/STD DATA: 115 TYPE AND 50 GRADE
•
MATERIAL: STEEL CORROSION RESISTING OVERALL
•
BORE SHAPE: STRAIGHT
TECHNICAL CHARACTERISTICS (FLIS)
SURFACE FINISHGROUND
RETAINER FABRICATION METHODPRESSED
OVERALL WIDTH0.2187 INCHES NOMINAL IN
INTERNAL CLEARANCE0.0002 INCHES MINIMUM RADIAL AND 0.0005 INCHES MAXIMUM RADIAL IN
STYLE DESIGNATORNON-LOADING GROOVE, NON-SEPARABLE
NONDEFINITIVE SPEC/STD DATA115 TYPE AND 50 GRADE
MATERIALSTEEL CORROSION RESISTING OVERALL
BORE SHAPESTRAIGHT
SPECIAL FEATURESINNER RING RUNOUT 0.0001 IN. ALSO OUTER RING RUNOUT 0.0002 IN. IN
OVERALL OUTSIDE DIAMETER0.8750 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 25
SS6632FCHHABEC5LG20Interchangeable
interchangeable cross-reference
interchangeable
MRS77SRNM1224ZDEInterchangeable
interchangeable cross-reference
interchangeable
8531067Interchangeable
interchangeable cross-reference
interchangeable
FFB171TYPE115GRADE50Interchangeable
interchangeable cross-reference
interchangeable
859546Interchangeable
interchangeable cross-reference
interchangeable
77NM0816Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is AMMS3K?
AMMS3K is a BEARING,BALL,ANNULAR.
What parts can replace AMMS3K?
There are 25 known substitutes for AMMS3K: SS6632FCHHABEC5LG20, MRS77SRNM1224ZDE, 8531067 and 22 more. Substitute compatibility should be verified for your specific system.
What is the NSN for AMMS3K?
AMMS3K is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-00-897-2944. 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