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Technical Data Sheet
PartsTable / COMPONENT / 999999K044
999999K044 ✓ 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: GREASE LUBRICATION, bore_diameter: 1.7715 INCHES MINIMUM AND 1.7717 INCHES MAXIMUM IN, overall_width: 1.9665 INCHES MINIMUM AND 1.9685 INCHES MAXIMUM IN, load_direction: ANGULAR, surface_finish: GROUND, style_designator: COUNTERBORED OUTER RINGS, NON-SEPARABLE, BACK TO BACK MOUNTING. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-00-976-9738, 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
999999K044
NSN: 3110-00-976-9738
FSC: 3110
CAGE: 80064 — NAVAL SHIP SYSTEMS COMMAND (USA)
SPECIFICATIONS
materialGREASE LUBRICATION
bore_diameter1.7715 INCHES MINIMUM AND 1.7717 INCHES MAXIMUM IN
overall_width1.9665 INCHES MINIMUM AND 1.9685 INCHES MAXIMUM IN
load_directionANGULAR
surface_finishGROUND
style_designatorCOUNTERBORED OUTER RINGS, NON-SEPARABLE, BACK TO BACK MOUNTING
overall_outside_diameter3.9368 INCHES MINIMUM AND 3.9370 INCHES MAXIMUM IN
internal_fit-up_designationSTANDARD
retainer_fabrication_methodPRESSED
departure_from_cited_documentANNUAL BALL BEARING FOR QUIET OPERATION APPLICATION TO SUBMARINE USAGE
criticality_code_justificationZZZW
lubrication_material_document_and_classificationMIL-G-18709 MIL SPEC SINGLE MATERIAL RESPONSE
NSN3110-00-976-9738
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: 999999K044 · 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
•
MATERIAL: STEEL OVERALL
•
DEPARTURE FROM CITED DOCUMENT: ANNUAL BALL BEARING FOR QUIET OPERATION APPLICATION TO SUBMARINE USAGE
•
STYLE DESIGNATOR: COUNTERBORED OUTER RINGS, NON-SEPARABLE, BACK TO BACK MOUNTING
•
LUBRICATION MATERIAL DOCUMENT AND CLASSIFICATION: MIL-G-18709 MIL SPEC SINGLE MATERIAL RESPONSE
•
INTERNAL FIT-UP DESIGNATION: STANDARD
•
LOAD DIRECTION: ANGULAR
TECHNICAL CHARACTERISTICS (FLIS)
SURFACE FINISHGROUND
MATERIALSTEEL OVERALL
DEPARTURE FROM CITED DOCUMENTANNUAL BALL BEARING FOR QUIET OPERATION APPLICATION TO SUBMARINE USAGE
MATERIALGREASE LUBRICATION
STYLE DESIGNATORCOUNTERBORED OUTER RINGS, NON-SEPARABLE, BACK TO BACK MOUNTING
LUBRICATION MATERIAL DOCUMENT AND CLASSIFICATIONMIL-G-18709 MIL SPEC SINGLE MATERIAL RESPONSE
INTERNAL FIT-UP DESIGNATIONSTANDARD
LOAD DIRECTIONANGULAR
OVERALL WIDTH1.9665 INCHES MINIMUM AND 1.9685 INCHES MAXIMUM IN
BORE DIAMETER1.7715 INCHES MINIMUM AND 1.7717 INCHES MAXIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 12
7309DBInterchangeable
interchangeable cross-reference
interchangeable
7309DInterchangeable
interchangeable cross-reference
interchangeable
7309BGY2Interchangeable
interchangeable cross-reference
interchangeable
7309BEGBYInterchangeable
interchangeable cross-reference
interchangeable
7309DBNTInterchangeable
Same NIIN cross-reference
interchangeable
79999017NTInterchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 999999K044?
999999K044 is a BEARING,BALL,ANNULAR.
What parts can replace 999999K044?
There are 12 known substitutes for 999999K044: 7309DB, 7309D, 7309BGY2 and 9 more. Substitute compatibility should be verified for your specific system.
Is 999999K044 still available?
999999K044 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