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Technical Data Sheet
PartsTable / COMPONENT / 640777
640777 ✓ 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 SEMICONDUCTOR DEVICE,DIODE is a the manufacturer industrial component. Key specifications include material: STEEL COMP E50100 OR STEEL COMP E51100 OR STEEL COMP E52100 OVERALL, overall_length: 0.7300 INCHES MINIMUM AND 0.7500 INCHES MAXIMUM IN, style_designator: NEEDLE ROLLER, SPHERICAL ENDS, rolling_element_diameter: 0.1248 INCHES MINIMUM AND 0.1250 INCHES MAXIMUM IN, material_document_and_classification: 66,AISI/SAE E50100,E51100 OR E52100 FED STD SINGLE MATERIAL RESPONSE OVERALL. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-00-191-0502, 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
640777
NSN: 3110-00-191-0502
FSC: 3110
CAGE: 34623 — AM GENERAL LLC (USA)
SPECIFICATIONS
materialSTEEL COMP E50100 OR STEEL COMP E51100 OR STEEL COMP E52100 OVERALL
overall_length0.7300 INCHES MINIMUM AND 0.7500 INCHES MAXIMUM IN
style_designatorNEEDLE ROLLER, SPHERICAL ENDS
rolling_element_diameter0.1248 INCHES MINIMUM AND 0.1250 INCHES MAXIMUM IN
material_document_and_classification66,AISI/SAE E50100,E51100 OR E52100 FED STD SINGLE MATERIAL RESPONSE OVERALL
NSN3110-00-191-0502
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: 640777 · 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
•
ROLLING ELEMENT DIAMETER: 0.1248 INCHES MINIMUM AND 0.1250 INCHES MAXIMUM IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: 66,AISI/SAE E50100,E51100 OR E52100 FED STD SINGLE MATERIAL RESPONSE OVERALL
•
STYLE DESIGNATOR: NEEDLE ROLLER, SPHERICAL ENDS
•
MATERIAL: STEEL COMP E50100 OR STEEL COMP E51100 OR STEEL COMP E52100 OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
OVERALL LENGTH0.7300 INCHES MINIMUM AND 0.7500 INCHES MAXIMUM IN
ROLLING ELEMENT DIAMETER0.1248 INCHES MINIMUM AND 0.1250 INCHES MAXIMUM IN
MATERIAL DOCUMENT AND CLASSIFICATION66,AISI/SAE E50100,E51100 OR E52100 FED STD SINGLE MATERIAL RESPONSE OVERALL
STYLE DESIGNATORNEEDLE ROLLER, SPHERICAL ENDS
MATERIALSTEEL COMP E50100 OR STEEL COMP E51100 OR STEEL COMP E52100 OVERALL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 18
51921-1Interchangeable
interchangeable cross-reference
interchangeable
101180Interchangeable
interchangeable cross-reference
interchangeable
562137Interchangeable
interchangeable cross-reference
interchangeable
640463Interchangeable
interchangeable cross-reference
interchangeable
A144Interchangeable
interchangeable cross-reference
interchangeable
717-015614Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 640777?
640777 is a SEMICONDUCTOR DEVICE,DIODE.
What parts can replace 640777?
There are 18 known substitutes for 640777: 51921-1, 101180, 562137 and 15 more. Substitute compatibility should be verified for your specific system.
Is 640777 still available?
640777 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