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21A13 — ROLLER,BEARING

✓ Government record, cited
— · TAPERED BEARING
PRODUCT OVERVIEW

21A13: ROLLER,BEARING.

The ROLLER,BEARING is a the manufacturer industrial component. Key specifications include material: STEEL COMP 5140 OVERALL, overall_length: 0.4940 INCHES NOMINAL IN, style_designator: NEEDLE ROLLER, CONICAL ENDS, rolling_element_diameter: 0.2501 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 3110-00-183-9909, 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
21A13
NSN: 3110-00-183-9909
FSC: 3110 — Bearings, Antifriction, Unmounted
CAGE: 21119 — EVINRUDE MOTORS PRODUCT GROUP OF OUTBOARD MARINE CORP (USA)
SPECIFICATIONS
materialSTEEL COMP 5140 OVERALL
overall_length0.4940 INCHES NOMINAL IN
style_designatorNEEDLE ROLLER, CONICAL ENDS
rolling_element_diameter0.2501 INCHES NOMINAL IN
NSN3110-00-183-9909
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: 21A13 · 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: 0.2501 INCHES NOMINAL IN
•
STYLE DESIGNATOR: NEEDLE ROLLER, CONICAL ENDS
•
MATERIAL: STEEL COMP 5140 OVERALL
TECHNICAL CHARACTERISTICS
ROLLING ELEMENT DIAMETER0.2501 INCHES NOMINAL IN
STYLE DESIGNATORNEEDLE ROLLER, CONICAL ENDS
OVERALL LENGTH0.4940 INCHES NOMINAL IN
MATERIALSTEEL COMP 5140 OVERALL
SUBSTITUTES & CROSS-REFERENCES 2
21-13Reference document
Same NSN cross-reference
Reference document — Secondary reference
133265Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Terminal item — stock exhausted; no further procurementNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 21A13?
21A13 is a ROLLER,BEARING.
What parts can replace 21A13?
There are 2 known substitutes for 21A13: 21-13, 133265. Substitute compatibility should be verified for your specific system.
What is the NSN for 21A13?
21A13 is cataloged in the U.S. Government catalog under NSN 3110-00-183-9909. 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.