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AS21440 — CAM FOLLOWER,NEEDLE BEARING

✓ Government record, cited
— · TAPERED BEARING
PRODUCT OVERVIEW

AS21440: CAM FOLLOWER,NEEDLE BEARING.

The CAM FOLLOWER,NEEDLE BEARING is a the manufacturer industrial component. Key specifications include stud_length: 0.7500 INCHES NOMINAL0.7500 INCHES NOMINAL IN, thread_class: 2A2A, seal_quantity: 22, stud_diameter: 0.2500 INCHES NOMINAL0.2500 INCHES NOMINAL IN, thread_length: 0.3125 INCHES MINIMUM0.3125 INCHES MINIMUM IN, overall_length: 1.0625 INCHES NOMINAL1.0625 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 3110-01-374-9310, 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
AS21440
NSN: 3110-01-374-9310
FSC: 3110 — Bearings, Antifriction, Unmounted
CAGE: 81343 — SOCIETY OF AUTOMOTIVE ENGINEERS INC (USA)
SPECIFICATIONS
stud_length0.7500 INCHES NOMINAL0.7500 INCHES NOMINAL IN
thread_class2A2A
seal_quantity22
stud_diameter0.2500 INCHES NOMINAL0.2500 INCHES NOMINAL IN
thread_length0.3125 INCHES MINIMUM0.3125 INCHES MINIMUM IN
overall_length1.0625 INCHES NOMINAL1.0625 INCHES NOMINAL IN
outer_ring_width0.4060 INCHES NOMINAL0.4060 INCHES NOMINAL IN
special_featuresCROWNED O DCROWNED O D
style_designatorCAM FOLLOWERCAM FOLLOWER
thread_directionRIGHT-HANDRIGHT-HAND
bearing_seal_typeCONTACTCONTACT
nominal_thread_size0.2500 INCHES0.2500 INCHES IN
NSN3110-01-374-9310
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: AS21440 · 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
•
BEARING SEAL TYPE: CONTACTCONTACT
•
LUBRICATION MATERIAL: GREASEGREASE
•
OUTER RING WIDTH: 0.4060 INCHES NOMINAL0.4060 INCHES NOMINAL IN
•
THREAD LENGTH: 0.3125 INCHES MINIMUM0.3125 INCHES MINIMUM IN
•
STYLE DESIGNATOR: CAM FOLLOWERCAM FOLLOWER
•
OVERALL OUTSIDE DIAMETER: 0.6250 INCHES NOMINAL0.6250 INCHES NOMINAL IN
•
THREAD DIRECTION: RIGHT-HANDRIGHT-HAND
TECHNICAL CHARACTERISTICS
BEARING SEAL TYPECONTACTCONTACT
LUBRICATION MATERIALGREASEGREASE
OUTER RING WIDTH0.4060 INCHES NOMINAL0.4060 INCHES NOMINAL IN
THREAD LENGTH0.3125 INCHES MINIMUM0.3125 INCHES MINIMUM IN
STYLE DESIGNATORCAM FOLLOWERCAM FOLLOWER
OVERALL LENGTH1.0625 INCHES NOMINAL1.0625 INCHES NOMINAL IN
OVERALL OUTSIDE DIAMETER0.6250 INCHES NOMINAL0.6250 INCHES NOMINAL IN
THREAD DIRECTIONRIGHT-HANDRIGHT-HAND
NOMINAL THREAD SIZE0.2500 INCHES0.2500 INCHES IN
STUD LENGTH0.7500 INCHES NOMINAL0.7500 INCHES NOMINAL IN
OTHER ITEMS IN FSC 3110 — Bearings, Antifriction, Unmounted
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
3110-00-001-1937 3110-00-001-1938 3110-00-001-4661 3110-00-001-4662 3110-00-001-4689 3110-00-001-4722
SUBSTITUTES & CROSS-REFERENCES 1
MS21440-102Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is AS21440?
AS21440 is a CAM FOLLOWER,NEEDLE BEARING.
What parts can replace AS21440?
There is 1 known substitute for AS21440: MS21440-102. Substitute compatibility should be verified for your specific system.
What is the NSN for AS21440?
AS21440 is cataloged in the U.S. Government catalog under NSN 3110-01-374-9310. This indicates validated use in U.S. government and defense supply chains.
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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.