PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

691-278-2Bearing,ball,annular

Bae Systems Information and Electronic Systems Integration Inc. · NSN 3110-00-227-2443 · FSC 3110 · No Item Name Available
Verified by PartsTable
NSN 3110-00-227-2443 — this item is cataloged by the U.S. Government under National Stock Number 3110-00-227-2443. Primary manufacturer part number: 691-278-2.
Features
  • Bearing,ball,annular — FSC 3110
  • Flange Width: 0.0420 INCHES NOMINAL IN
  • Outer Ring Width: 0.2250 INCHES NOMINAL IN
  • Surface Finish: GROUND
  • Bore Shape: STRAIGHT
  • Lubrication Material Document and Classification: MIL-G-23827 MIL SPEC SINGLE MATERIAL RESPONSE
  • Outer Ring Taper: 0.0680 PER FOOT IN INCHES NOMINAL
  • Lubrication Material: GREASE
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 3110-00-227-2443, is classified within Federal Supply Class 3110 (No Item Name Available) of the Bearings group. The primary manufacturer of record is Bae Systems Information and Electronic Systems Integration Inc.. Government technical data includes 17 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 36 commercial cross-references from 12 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
NSN3110-00-227-2443
Primary Part Number691-278-2
Item NameBearing,ball,annular
FSC / FSG3110 / 31 — No Item Name Available
ManufacturerBae Systems Information and Electronic Systems Integration Inc.
StatusCANCELLED
Flange Width0.0420 INCHES NOMINAL IN
Outer Ring Width0.2250 INCHES NOMINAL IN
Surface FinishGROUND
Bore ShapeSTRAIGHT
Lubrication Material Document and ClassificationMIL-G-23827 MIL SPEC SINGLE MATERIAL RESPONSE
Outer Ring Taper0.0680 PER FOOT IN INCHES NOMINAL
Lubrication MaterialGREASE
Shield Quantity2
Inner Ring Width0.2490 INCHES MINIMUM IN
Flange Outside Diameter0.7500 INCHES NOMINAL IN
Retainer Fabrication MethodPRESSED
Outer Ring Outside Diameter0.6878 INCHES MINIMUM AND 0.6882 INCHES MAXIMUM IN
Internal Fit-Up DesignationSTANDARD
Style DesignatorNON-LOADING GROOVE, NON-SEPARABLE
MaterialSTEEL OVERALL
Load DirectionRADIAL
Bore Diameter0.3125 INCHES MINIMUM IN
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 7
1660-00-024-643625831 INTERCHANGEABLE
Cam,air Valve
Parker Hannifin Corporation Div Aerospace Group Headquarters
5930-00-103-5065U-65A138-140 INTERCHANGEABLE
Switch,thermostatic
Triumph Thermal Systems, Llc
5315-00-383-9943 INTERCHANGEABLE
Pin,quick Release
5840-00-879-9193135068 INTERCHANGEABLE
Receiver-Transmitter,radar
Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp
4510-00-888-8990602 INTERCHANGEABLE
Holder,soap
Seachrome Corporation Div Infratech
5360-01-255-1625 INTERCHANGEABLE
Spring,helical,compression
6520-01-523-2090SRPG11/12#6 INTERCHANGEABLE
Curette,periodontal
Hu-Friedy Mfg. Co., Llc
Cross-Reference Index
Part NumberManufacturer
F5DDMILG3278A Timken Co Div the Timken Company (USA)
6733ANG25 Skf Usa Inc. (USA)
F5DDE8115 Timken Co Div the Timken Company (USA)
F5DDFS160B Timken Co Div the Timken Company (USA)
RS77NR5HX1E General Motors Corp (USA)
F5DDC1FS10160 Timken Co Div the Timken Company (USA)
RS77NR5HZD1MILG3278A General Motors Corp (USA)
25831 Unisys Corp Defense Systems C S D Field Engineering (USA)
F5DDC1FS160A Timken Co Div the Timken Company (USA)
RS77NR5HZD1E9 General Motors Corp Delco Moraine Ndh Div (USA)
F5DDC1FS10160X Timken Co Div the Timken Company (USA)
F5DDANG25 Timken Co Div the Timken Company (USA)
F5DDFS160 Timken Co Div the Timken Company (USA)
691-278-2 PRIMARY Bae Systems Information and Electronic Systems Integration Inc. (USA)
309-0875-000 PRIMARY Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems (USA)
F5DDC1FS50160 Timken Co Div the Timken Company (USA)
F5DDFS160A Timken Co Div the Timken Company (USA)
SSF5DDC1 Timken Co Div the Timken Company (USA)
106363-01 Lucas Aerospace Power Equipment Corporation (USA)
RS77NR5HZD1MILG3278A General Motors Corp Delco Moraine Ndh Div (USA)
Related Parts
1660-00-024-6436INTERCHANGEABLE
CAM,AIR VALVE
25831
5930-00-103-5065INTERCHANGEABLE
SWITCH,THERMOSTATIC
U-65A138-140
5315-00-383-9943INTERCHANGEABLE
PIN,QUICK RELEASE
5840-00-879-9193INTERCHANGEABLE
RECEIVER-TRANSMITTER,RADAR
135068
4510-00-888-8990INTERCHANGEABLE
HOLDER,SOAP
602
5360-01-255-1625INTERCHANGEABLE
SPRING,HELICAL,COMPRESSION
6520-01-523-2090INTERCHANGEABLE
CURETTE,PERIODONTAL
SRPG11/12#6

Frequently Asked Questions

What is NSN 3110-00-227-2443?

NSN 3110-00-227-2443 is a Bearing,ball,annular, manufactured by Bae Systems Information and Electronic Systems Integration Inc., classified under FSC 3110 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 3110-00-227-2443?

NSN 3110-00-227-2443 has 36 cross-referenced part numbers: F5DDMILG3278A (Timken Co Div the Timken Company), 6733ANG25 (Skf Usa Inc.), F5DDE8115 (Timken Co Div the Timken Company), F5DDFS160B (Timken Co Div the Timken Company), RS77NR5HX1E (General Motors Corp) and 31 more.

What NSN replaces 3110-00-227-2443?

There are 7 known substitutes for 3110-00-227-2443: 1660-00-024-6436, 5930-00-103-5065, 5315-00-383-9943 and 4 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 691-278-2?

Key specifications for 691-278-2: Flange Width: 0.0420 INCHES NOMINAL IN; Outer Ring Width: 0.2250 INCHES NOMINAL IN; Surface Finish: GROUND; Special Features: REMOVABLE SHIELDS. 18 total characteristics are documented in the Federal Logistics Information System.

Is NSN 3110-00-227-2443 still in active supply?

NSN 3110-00-227-2443 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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