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Technical Data Sheet
PartsTable / COMPONENT / 151921
151921 ✓ 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 COUPLING,INTERNAL CORNER is a the manufacturer industrial component. Key specifications include end_item_identification: AN/TPB-1D RADAR BOMB DIRECTING SET. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-00-144-8869, 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
151921
NSN: 3110-00-144-8869
FSC: 3110
CAGE: 56232 — LOCKHEED MARTIN CORPORATION DIV RMS - MITCHEL FIELD (USA)
SPECIFICATIONS
end_item_identificationAN/TPB-1D RADAR BOMB DIRECTING SET
general_characteristics_item_descriptionSTEEL BASE,GALVANIZED FINISH,2.625 IN. LG EA LEG,2.641 IN. H,0.040 IN. THK,STEEL COVER,ENAMELED FINISH,COLOR BUFF OR GRAY,3.000 IN. LG EA LEG,2.672 IN. H,0.040 IN. THK IN
NSN3110-00-144-8869
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: 151921 · 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
VERIFIED SUBSTITUTES & CROSS-REFERENCES 30
DT301-815Interchangeable
interchangeable cross-reference
interchangeable
669771-1Interchangeable
interchangeable cross-reference
interchangeable
20720AInterchangeable
interchangeable cross-reference
interchangeable
U12Interchangeable
interchangeable cross-reference
interchangeable
700030BTCInterchangeable
interchangeable cross-reference
interchangeable
700030Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 151921?
151921 is a COUPLING,INTERNAL CORNER.
What parts can replace 151921?
There are 30 known substitutes for 151921: DT301-815, 669771-1, 20720A and 27 more. Substitute compatibility should be verified for your specific system.
Is 151921 still available?
151921 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