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PartsTable / COMPONENT / 5521-4
5521-4 ✓ Verified by PartsTable
Mobiparts · COMPONENT
WHAT YOU NEED TO KNOW
Verify manufacturer and server generation compatibility Check if Option PN or Spare PN — same part, different channel
Confirm exact part number — similar PNs may be different parts
PRODUCT OVERVIEW

The BEARING,BALL,ANNULAR is a Mobiparts industrial component. Key specifications include material: NICKEL ALLOY, bore_shape: STRAIGHT, bore_diameter: 0.4370 INCHES MINIMUM AND 0.4375 INCHES MAXIMUM IN, overall_width: 25.00 MILLIMETERS NOMINAL MM, load_direction: RADIAL, surface_finish: GROUND. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 2930-00-354-7698, 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
5521-4
NSN: 2930-00-354-7698
FSC: 2930
CAGE: 80072 — H20 TANK INC U S MOTORS DIV (USA)
SPECIFICATIONS
materialNICKEL ALLOY
bore_shapeSTRAIGHT
bore_diameter0.4370 INCHES MINIMUM AND 0.4375 INCHES MAXIMUM IN
overall_width25.00 MILLIMETERS NOMINAL MM
load_directionRADIAL
surface_finishGROUND
shield_quantity1
special_features54230, CAGE 91161; 53900, CAGE 91161
style_designatorWITHOUT INSERT OR LINER
surface_treatmentCADMIUM OUTER RACE MEMBER
inner_member_width0.4320 INCHES MINIMUM AND 0.4370 INCHES MAXIMUM IN
outer_member_width0.3380 INCHES MINIMUM AND 0.3430 INCHES MAXIMUM IN
NSN2930-00-354-7698
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR MFR: Mobiparts BEARING,BALL,ANNULAR TITLE COMPONENT PN 5521-4 MFR Mobiparts BEARING,BALL,ANNULAR
VERIFIED SUBSTITUTES & CROSS-REFERENCES 10
235A2507EB02Interchangeable
interchangeable cross-reference
interchangeable
6309-Z/C3Interchangeable
interchangeable cross-reference
interchangeable
235A2508ED03Interchangeable
interchangeable cross-reference
interchangeable
RPG7AInterchangeable
interchangeable cross-reference
interchangeable
LHPB7GAInterchangeable
interchangeable cross-reference
interchangeable
GB14A7Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 5521-4?
5521-4 is a BEARING,BALL,ANNULAR manufactured by Mobiparts.
What parts can replace 5521-4?
There are 10 known substitutes for 5521-4: 235A2507EB02, 6309-Z/C3, 235A2508ED03 and 7 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 5521-4?
5521-4 is cataloged in the Federal Logistics Information System (FLIS) under NSN 2930-00-354-7698. 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