PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

S12SFFQ6B4MILG3278ABearing,ball,annular

Skf Usa Inc. · NSN 3110-00-554-3311 · FSC 3110 · No Item Name Available
Verified by PartsTable
NSN 3110-00-554-3311 — this item is cataloged by the U.S. Government under National Stock Number 3110-00-554-3311. Primary manufacturer part number: S12SFFQ6B4MILG3278A.
Features
  • Bearing,ball,annular — FSC 3110
  • Surface Finish: GROUND
  • Retainer Fabrication Method: PRESSED
  • Standard Tolerance Designation: ABEC NO.1
  • Internal Fit-Up Designation: STANDARD
  • Lubrication Material Document and Classification: MIL-G-23827 MIL SPEC SINGLE MATERIAL RESPONSE
  • Lubrication Material: GREASE
  • Bore Shape: STRAIGHT
Applications
  • Rotating machinery support and alignment
  • Shaft load distribution
  • Precision spindle assemblies
  • Applications requiring Steel Overall construction
General Description

The Bearing,ball,annular, cataloged under National Stock Number 3110-00-554-3311, is classified within Federal Supply Class 3110 (No Item Name Available) of the Bearings group. The primary manufacturer of record is Skf Usa Inc.. Government technical data includes 14 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 11 commercial cross-references from 5 manufacturers, enabling identification through both NSN and commercial part number lookups. 7 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN3110-00-554-3311
Primary Part NumberS12SFFQ6B4MILG3278A
Item NameBearing,ball,annular
FSC / FSG3110 / 31 — No Item Name Available
ManufacturerSkf Usa Inc.
StatusCANCELLED
Surface FinishGROUND
Retainer Fabrication MethodPRESSED
Standard Tolerance DesignationABEC NO.1
Internal Fit-Up DesignationSTANDARD
Lubrication Material Document and ClassificationMIL-G-23827 MIL SPEC SINGLE MATERIAL RESPONSE
Lubrication MaterialGREASE
Bore ShapeSTRAIGHT
Load DirectionRADIAL
Shield Quantity2
MaterialSTEEL OVERALL
Specification/standard Data58536-AA59645-08ACHB PROFESSIONAL/INDUSTRIAL ASSOCIATION SPECIFICATION
Style DesignatorNON-LOADING GROOVE, NON-SEPARABLE
Overall Outside Diameter2.2500 INCHES NOMINAL IN
Bore Diameter1.2500 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 7
3110-00-155-8925 INTERCHANGEABLE
Bearing,ball,annular
3110-00-421-4973 INTERCHANGEABLE
Bearing,ball,annular
3110-00-443-5888 INTERCHANGEABLE
Bearing,ball,annular
3110-00-540-4662 INTERCHANGEABLE
Bearing,ball,annular
3110-00-554-2916 INTERCHANGEABLE
Bearing,ball,annular
3110-00-554-2923 INTERCHANGEABLE
Bearing,ball,annular
3110-00-554-5715 INTERCHANGEABLE
Bearing,ball,annular
Cross-Reference Index
Part NumberManufacturer
S12SFFQ6B4MILG3278A Skf Usa Inc. (USA)
S12RFFMILG3278A Schatz Bearing Corporation Dba Schatz Bearing Corp (USA)
R20FF0105A006A75A0000-0 Skf Usa Inc. (USA)
S12RPPTFMILG3278A Fag Bearings Corporation (USA)
R20FFABEC1MILG23827 Skf Usa Inc. (USA)
S12SFFQ6A7MILG3278A Skf Usa Inc. (USA)
R20-1L1 Schatz Bearing Corporation Dba Schatz Bearing Corp (USA)
FFB2844/03BF1XX Federal Specifications Promulgated by General Services Administration Washington DC (USA)
FF-B-2844/3 Federal Specifications Promulgated by General Services Administration Washington DC (USA)
AA59645-08ACHB Federal Commercial Item Description Promulgated by General Services Administration Washington DC (USA)
A-A-59645 Federal Commercial Item Description Promulgated by General Services Administration Washington DC (USA)
Related Parts
3110-00-155-8925INTERCHANGEABLE
BEARING,BALL,ANNULAR
3110-00-421-4973INTERCHANGEABLE
BEARING,BALL,ANNULAR
3110-00-443-5888INTERCHANGEABLE
BEARING,BALL,ANNULAR
3110-00-540-4662INTERCHANGEABLE
BEARING,BALL,ANNULAR
3110-00-554-2916INTERCHANGEABLE
BEARING,BALL,ANNULAR
3110-00-554-2923INTERCHANGEABLE
BEARING,BALL,ANNULAR
3110-00-554-5715INTERCHANGEABLE
BEARING,BALL,ANNULAR

Frequently Asked Questions

What is NSN 3110-00-554-3311?

NSN 3110-00-554-3311 is a Bearing,ball,annular, manufactured by Skf Usa Inc., classified under FSC 3110 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 3110-00-554-3311?

NSN 3110-00-554-3311 has 11 cross-referenced part numbers: S12SFFQ6B4MILG3278A (Skf Usa Inc.), S12RFFMILG3278A (Schatz Bearing Corporation Dba Schatz Bearing Corp), R20FF0105A006A75A0000-0 (Skf Usa Inc.), S12RPPTFMILG3278A (Fag Bearings Corporation), R20FFABEC1MILG23827 (Skf Usa Inc.) and 6 more.

What NSN replaces 3110-00-554-3311?

There are 7 known substitutes for 3110-00-554-3311: 3110-00-155-8925, 3110-00-421-4973, 3110-00-443-5888 and 4 more. Verify interchangeability with system specifications before substitution.

What are the specifications of S12SFFQ6B4MILG3278A?

Key specifications for S12SFFQ6B4MILG3278A: Surface Finish: GROUND; Retainer Fabrication Method: PRESSED; Standard Tolerance Designation: ABEC NO.1; Internal Fit-Up Designation: STANDARD. 15 total characteristics are documented in the Federal Logistics Information System.

Is NSN 3110-00-554-3311 still in active supply?

NSN 3110-00-554-3311 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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