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Technical Data Sheet
PartsTable / COMPONENT / AS39901A
AS39901A ✓ 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 CAM FOLLOWER,NEEDLE BEARING is a the manufacturer industrial component. Key specifications include stud_length: 1.0315 INCHES NOMINAL1.0315 INCHES NOMINAL IN, thread_class: 3A3A, seal_quantity: 22, stud_diameter: 0.2500 INCHES NOMINAL0.2500 INCHES NOMINAL IN, thread_length: 0.3440 INCHES NOMINAL0.3440 INCHES NOMINAL IN, alignment_type: RIGIDRIGID. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-01-358-7338, 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
AS39901A
NSN: 3110-01-358-7338
FSC: 3110
CAGE: 0U583 — SAE INTERNATIONAL DBA SAE INTERNATIONAL (USA)
SPECIFICATIONS
stud_length1.0315 INCHES NOMINAL1.0315 INCHES NOMINAL IN
thread_class3A3A
seal_quantity22
stud_diameter0.2500 INCHES NOMINAL0.2500 INCHES NOMINAL IN
thread_length0.3440 INCHES NOMINAL0.3440 INCHES NOMINAL IN
alignment_typeRIGIDRIGID
overall_length1.3125 INCHES NOMINAL1.3125 INCHES NOMINAL IN
outer_ring_width0.2810 INCHES NOMINAL0.2810 INCHES NOMINAL IN
special_featuresSEALED WITH LUBRICATOR IN FLANGE END OF STUDSEALED WITH LUBRICATOR IN FLANGE END OF STUD
style_designatorCAM FOLLOWERCAM FOLLOWER
thread_directionRIGHT-HANDRIGHT-HAND
bearing_seal_typeCONTACTCONTACT
NSN3110-01-358-7338
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: AS39901A · 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
•
STYLE DESIGNATOR: CAM FOLLOWERCAM FOLLOWER
•
THREAD CLASS: 3A3A
•
SEAL QUANTITY: 22
•
STUD DIAMETER: 0.2500 INCHES NOMINAL0.2500 INCHES NOMINAL IN
•
BEARING SEAL TYPE: CONTACTCONTACT
•
STUD LENGTH: 1.0315 INCHES NOMINAL1.0315 INCHES NOMINAL IN
•
NOMINAL THREAD SIZE: 0.2500 INCHES0.2500 INCHES IN
•
OUTER RING WIDTH: 0.2810 INCHES NOMINAL0.2810 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
STYLE DESIGNATORCAM FOLLOWERCAM FOLLOWER
THREAD CLASS3A3A
SEAL QUANTITY22
STUD DIAMETER0.2500 INCHES NOMINAL0.2500 INCHES NOMINAL IN
BEARING SEAL TYPECONTACTCONTACT
STUD LENGTH1.0315 INCHES NOMINAL1.0315 INCHES NOMINAL IN
NOMINAL THREAD SIZE0.2500 INCHES0.2500 INCHES IN
OUTER RING WIDTH0.2810 INCHES NOMINAL0.2810 INCHES NOMINAL IN
STANDARD TOLERANCE DESIGNATIONAFBMA STD TOLERANCE FOR CAN FOLLWER NEEDLE BEARINGAFBMA STD TOLERANCE FOR CAN FOLLWER NEEDLE BEARING
OVERALL OUTSIDE DIAMETER0.6875 INCHES NOMINAL0.6875 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 21
4NBC612ZPANG25Interchangeable
interchangeable cross-reference
interchangeable
505-4Interchangeable
IBM Flex System FC5054 4-Port FC-16GB Adapter
interchangeable
24NBC2036YZP2CInterchangeable
interchangeable cross-reference
interchangeable
24NBC2036YZPANG25Interchangeable
interchangeable cross-reference
interchangeable
64A98B76-1Interchangeable
interchangeable cross-reference
interchangeable
AS39901Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is AS39901A?
AS39901A is a CAM FOLLOWER,NEEDLE BEARING.
What parts can replace AS39901A?
There are 21 known substitutes for AS39901A: 4NBC612ZPANG25, 505-4, 24NBC2036YZP2C and 18 more. Substitute compatibility should be verified for your specific system.
What is the NSN for AS39901A?
AS39901A is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-01-358-7338. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026