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81T3123A — BEARING,ROLLER,THRUST

✓ Government record, cited
— · TAPERED BEARING
PRODUCT OVERVIEW

81T3123A: BEARING,ROLLER,THRUST.

The BEARING,ROLLER,THRUST is a the manufacturer industrial component. Key specifications include length: 0.250 INCHES NOMINAL SQUARE END IN, material: STEEL CORROSION RESISTING OVERALL, stem_type: NONRISING, bore_shape: STRAIGHT SECOND END, valve_size: 0.750 INCHES IN, bonnet_type: INSIDE SCREW. This part is cataloged in the U.S.

Government catalog under NSN 3110-00-117-0757, 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
81T3123A
NSN: 3110-00-117-0757
FSC: 3110 — Bearings, Antifriction, Unmounted
CAGE: 63734 — KAITLIN CORP (USA)
SPECIFICATIONS
length0.250 INCHES NOMINAL SQUARE END IN
materialSTEEL CORROSION RESISTING OVERALL
stem_typeNONRISING
bore_shapeSTRAIGHT SECOND END
valve_size0.750 INCHES IN
bonnet_typeINSIDE SCREW
bore_length0.5000 INCHES NOMINAL BOTH ENDS IN
design_typeBELLOWS
thread_class2A A
bore_diameter0.1873 INCHES NOMINAL SECOND END IN
nominal_width22.0 MILLIMETERS MM
thread_length0.156 INCHES NOMINAL IN
NSN3110-00-117-0757
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: 81T3123A · 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
SUBSTITUTES & CROSS-REFERENCES 8
81T3123A2Reference document
Same NSN cross-reference
Reference document — Secondary reference
15129Reference document
Same NSN cross-reference
Reference document — Secondary reference
T113Reference document
Same NSN cross-reference
Reference document — Secondary reference
121461Reference document
Same NSN cross-reference
Reference document — Secondary reference
19221Reference document
Same NSN cross-reference
Reference document — Secondary reference
210037Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 81T3123A?
81T3123A is a BEARING,ROLLER,THRUST.
What parts can replace 81T3123A?
There are 8 known substitutes for 81T3123A: 81T3123A2, 15129, T113 and 5 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 81T3123A?
81T3123A is cataloged in the U.S. Government catalog under NSN 3110-00-117-0757. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.