PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

MIL-B-81793Bearing,ball,annular

Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M · NSN 3110-00-625-9243 · FSC 3110 · No Item Name Available
Verified by PartsTable
NSN 3110-00-625-9243 — this item is cataloged by the U.S. Government under National Stock Number 3110-00-625-9243. Primary manufacturer part number: MIL-B-81793.
Features
  • Bearing,ball,annular — FSC 3110
  • Outer Ring Outside Diameter: 0.5000 INCHES NOMINAL IN
  • Flange Width: 0.0230 INCHES NOMINAL IN
  • Style Designator: NON-LOADING GROOVE, NON-SEPARABLE
  • Material: STEEL CORROSION RESISTING OVERALL
  • Retainer Fabrication Method: PRESSED
  • Load Direction: RADIAL
  • Standard Tolerance Designation: ABEC NO.7
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 3110-00-625-9243, is classified within Federal Supply Class 3110 (No Item Name Available) of the Bearings group. The primary manufacturer of record is Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M. Government technical data includes 14 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 12 commercial cross-references from 7 manufacturers, enabling identification through both NSN and commercial part number lookups. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN3110-00-625-9243
Primary Part NumberMIL-B-81793
Item NameBearing,ball,annular
FSC / FSG3110 / 31 — No Item Name Available
ManufacturerMilitary Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
StatusCANCELLED
Outer Ring Outside Diameter0.5000 INCHES NOMINAL IN
Flange Width0.0230 INCHES NOMINAL IN
Style DesignatorNON-LOADING GROOVE, NON-SEPARABLE
MaterialSTEEL CORROSION RESISTING OVERALL
Retainer Fabrication MethodPRESSED
Load DirectionRADIAL
Standard Tolerance DesignationABEC NO.7
Internal Clearance0.0002 INCHES MINIMUM RADIAL AND 0.0005 INCHES MAXIMUM RADIAL IN
Bore Diameter0.2500 INCHES NOMINAL IN
Outer Ring Width0.1250 INCHES NOMINAL IN
Inner Ring Width0.1562 INCHES NOMINAL IN
Flange Outside Diameter0.5470 INCHES NOMINAL IN
Surface FinishGROUND
Bore ShapeSTRAIGHT
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 1
3110-00-739-7058 INTERCHANGEABLE
Bearing,ball,annular
Cross-Reference Index
Part NumberManufacturer
MIL-B-81793 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
S814FCHHEP28L02 Mpb Corp Div Timken Super Precision (USA)
412574-12 Raytheon Company Dba Raytheon (USA)
S814FCHHE7P25LO2 Mpb Corp Div Timken Super Precision (USA)
SFR188EEK25-0 New Hampshire Ball Bearings Inc Div Hitech Division (USA)
ULKUZ8016X-48-A7 Rmb Miniature Bearings Inc (USA)
H15101-004 Mcdonnell Douglas Corp Mcdonnell Douglas Aerospace Opns West (USA)
SFR188EE New Hampshire Ball Bearings Inc Div Hitech Division (USA)
M81793-FHFGAX0SAE71AB1 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
S814FCE Mpb Corp Div Timken Super Precision (USA)
810000-235 Bae Systems Information and Electronic Systems Integration Inc. Div Bae Systems Information & Electronic Systems Integration Inc (USA)
SFR188PPEEK25/7 New Hampshire Ball Bearings Inc Div Hitech Division (USA)
Related Parts
3110-00-739-7058INTERCHANGEABLE
BEARING,BALL,ANNULAR

Frequently Asked Questions

What is NSN 3110-00-625-9243?

NSN 3110-00-625-9243 is a Bearing,ball,annular, manufactured by Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M, classified under FSC 3110 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 3110-00-625-9243?

NSN 3110-00-625-9243 has 12 cross-referenced part numbers: MIL-B-81793 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), S814FCHHEP28L02 (Mpb Corp Div Timken Super Precision), 412574-12 (Raytheon Company Dba Raytheon), S814FCHHE7P25LO2 (Mpb Corp Div Timken Super Precision), SFR188EEK25-0 (New Hampshire Ball Bearings Inc Div Hitech Division) and 7 more.

What NSN replaces 3110-00-625-9243?

There is 1 known substitute for 3110-00-625-9243: 3110-00-739-7058. Verify interchangeability with system specifications before substitution.

What are the specifications of MIL-B-81793?

Key specifications for MIL-B-81793: Outer Ring Outside Diameter: 0.5000 INCHES NOMINAL IN; Flange Width: 0.0230 INCHES NOMINAL IN; Style Designator: NON-LOADING GROOVE, NON-SEPARABLE; Material: STEEL CORROSION RESISTING OVERALL. 14 total characteristics are documented in the Federal Logistics Information System.

Is NSN 3110-00-625-9243 still in active supply?

NSN 3110-00-625-9243 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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