PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

MFB8A52C1SA6Bearing,ball,annular

Kearfott Corporation Div Guidance and Navigation Division · NSN 3110-00-141-9559 · FSC 3110 · No Item Name Available
Verified by PartsTable
NSN 3110-00-141-9559 — this item is cataloged by the U.S. Government under National Stock Number 3110-00-141-9559. Primary manufacturer part number: MFB8A52C1SA6.
Features
  • Bearing,ball,annular — FSC 3110
  • Bore Diameter: 0.1250 INCHES NOMINAL IN
  • Load Direction: RADIAL
  • Lubrication Material Document and Classification: MIL-L-6085 MIL SPEC SINGLE MATERIAL RESPONSE
  • Material: STEEL CORROSION RESISTING OVERALL
  • Outer Ring Outside Diameter: 0.3125 INCHES NOMINAL IN
  • Flange Width: 0.0310 INCHES NOMINAL IN
  • Flange Outside Diameter: 0.3590 INCHES NOMINAL IN
Applications
  • Rotating machinery support and alignment
  • Shaft load distribution
  • Precision spindle assemblies
  • Applications requiring Steel Corrosion Resisting Overall construction
General Description

The Bearing,ball,annular, cataloged under National Stock Number 3110-00-141-9559, is classified within Federal Supply Class 3110 (No Item Name Available) of the Bearings group. The primary manufacturer of record is Kearfott Corporation Div Guidance and Navigation Division. Government technical data includes 14 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 25 commercial cross-references from 16 manufacturers, enabling identification through both NSN and commercial part number lookups. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN3110-00-141-9559
Primary Part NumberMFB8A52C1SA6
Item NameBearing,ball,annular
FSC / FSG3110 / 31 — No Item Name Available
ManufacturerKearfott Corporation Div Guidance and Navigation Division
StatusCANCELLED
Bore Diameter0.1250 INCHES NOMINAL IN
Load DirectionRADIAL
Lubrication Material Document and ClassificationMIL-L-6085 MIL SPEC SINGLE MATERIAL RESPONSE
MaterialSTEEL CORROSION RESISTING OVERALL
Outer Ring Outside Diameter0.3125 INCHES NOMINAL IN
Flange Width0.0310 INCHES NOMINAL IN
Flange Outside Diameter0.3590 INCHES NOMINAL IN
Surface FinishGROUND
Lubrication MaterialOIL
Standard Tolerance DesignationABEC NO.5
Shield Quantity2
Bore ShapeSTRAIGHT
Internal Fit-Up DesignationSTANDARD
Style DesignatorNON-LOADING GROOVE, NON-SEPARABLE
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 3
2815-00-363-0068840549-1 INTERCHANGEABLE
Ring,labyrinth
Elliott Company Div Jeannette
5930-00-433-5106327054 INTERCHANGEABLE
Switch Assembly
Telemechanics Inc
6625-01-051-34283560-0 INTERCHANGEABLE
Adapter,test
Fluke Corp
Cross-Reference Index
Part NumberManufacturer
MFB8A52C1SA6 PRIMARY Kearfott Corporation Div Guidance and Navigation Division (USA)
104587-6 Allied-Signal Inc Dba Allied-Signal Aerospace Co Electrodynamics Div (USA)
533349 Alliedsignal Inc Dba Allied-Signal Aerospace Co (USA)
SS518FCHHP25L01 PRIMARY Mpb Corp Div Timken Super Precision (USA)
327-054 PRIMARY Cmc Electronics Inc (CAN)
1394836-4 PRIMARY Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA)
SFR2-55PP PRIMARY New Hampshire Ball Bearings Inc Div Hitech Division (USA)
A1072-2 Comtec Information Systems Inc Digitronics Div (USA)
115558-006 Bae Systems Information and Electronic Systems Integration Inc. Dba Bae Systems (USA)
SFR2-55PPK24-24 New Hampshire Ball Bearings Inc Div Hitech Division (USA)
1090866 PRIMARY Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA)
350793-8-112 Raytheon Company Div Corp (USA)
SFR2-5PPCK25MILL6085A PRIMARY New Hampshire Ball Bearings Inc Div Hitech Division (USA)
BBSR6SSF PRIMARY Ge Aviation Systems Llc Dba Ge Aviation (USA)
104587-6 Honeywell International Inc. Dba Honeywell International Div Aerospace - Tempe (west Warner Road) (USA)
1225357 PRIMARY Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA)
1225357-6 PRIMARY Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA)
533349 Honeywell International Inc. Div Aerospace - Torrance (USA)
350793-8-112 Raytheon Company Dba Raytheon Co (USA)
10521PCN0106 PRIMARY Lockheed Martin Librascope Corporation (USA)
Related Parts
2815-00-363-0068INTERCHANGEABLE
RING,LABYRINTH
840549-1
5930-00-433-5106INTERCHANGEABLE
SWITCH ASSEMBLY
327054
6625-01-051-3428INTERCHANGEABLE
ADAPTER,TEST
3560-0

Frequently Asked Questions

What is NSN 3110-00-141-9559?

NSN 3110-00-141-9559 is a Bearing,ball,annular, manufactured by Kearfott Corporation Div Guidance and Navigation Division, classified under FSC 3110 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 3110-00-141-9559?

NSN 3110-00-141-9559 has 25 cross-referenced part numbers: MFB8A52C1SA6 (Kearfott Corporation Div Guidance and Navigation Division), 104587-6 (Allied-Signal Inc Dba Allied-Signal Aerospace Co Electrodynamics Div), 533349 (Alliedsignal Inc Dba Allied-Signal Aerospace Co), SS518FCHHP25L01 (Mpb Corp Div Timken Super Precision), 327-054 (Cmc Electronics Inc) and 20 more.

What NSN replaces 3110-00-141-9559?

There are 3 known substitutes for 3110-00-141-9559: 2815-00-363-0068, 5930-00-433-5106, 6625-01-051-3428. Verify interchangeability with system specifications before substitution.

What are the specifications of MFB8A52C1SA6?

Key specifications for MFB8A52C1SA6: Bore Diameter: 0.1250 INCHES NOMINAL IN; Load Direction: RADIAL; Lubrication Material Document and Classification: MIL-L-6085 MIL SPEC SINGLE MATERIAL RESPONSE; Material: STEEL CORROSION RESISTING OVERALL. 15 total characteristics are documented in the Federal Logistics Information System.

Is NSN 3110-00-141-9559 still in active supply?

NSN 3110-00-141-9559 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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