PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

306KSBearing,ball,annular

Timken Co Div the Timken Company · NSN 3110-00-156-5173 · FSC 3110 · No Item Name Available
Verified by PartsTable
NSN 3110-00-156-5173 — this item is cataloged by the U.S. Government under National Stock Number 3110-00-156-5173. Primary manufacturer part number: 306KS.
Features
  • Bearing,ball,annular — FSC 3110
  • Self-Alignment Location: EXTERNAL
  • Alignment Type: SELF-ALIGNING
  • Style Designator: NON-LOADING GROOVE, NON-SEPARABLE
  • Standard Tolerance Designation: ABEC NO.1
  • Internal Fit-Up Designation: STANDARD
  • Load Direction: RADIAL
  • Bore Diameter: 30.00 MILLIMETERS NOMINAL MM
Applications
  • Rotating machinery support and alignment
  • Shaft load distribution
  • Precision spindle assemblies
General Description

The Bearing,ball,annular, cataloged under National Stock Number 3110-00-156-5173, is classified within Federal Supply Class 3110 (No Item Name Available) of the Bearings group. The primary manufacturer of record is Timken Co Div the Timken Company. Government technical data includes 11 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 5 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN3110-00-156-5173
Primary Part Number306KS
Item NameBearing,ball,annular
FSC / FSG3110 / 31 — No Item Name Available
ManufacturerTimken Co Div the Timken Company
StatusACTIVE
Self-Alignment LocationEXTERNAL
Alignment TypeSELF-ALIGNING
Style DesignatorNON-LOADING GROOVE, NON-SEPARABLE
Standard Tolerance DesignationABEC NO.1
Internal Fit-Up DesignationSTANDARD
Load DirectionRADIAL
Bore Diameter30.00 MILLIMETERS NOMINAL MM
Features ProvidedALIGNING RING
Overall Outside Diameter80.00 MILLIMETERS NOMINAL MM
Bore ShapeSTRAIGHT
Surface FinishGROUND
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 5
3110-00-155-620110510 INTERCHANGEABLE
Bearing,ball,annular
Allard Nazarian Group, Inc. Dba Granite State Manufacturing
5120-00-223-19455120-00-223-1945 INTERCHANGEABLE
Vise,machinist's
General Services Administration Federal Supply Service
3110-00-293-93020042980-3 INTERCHANGEABLE
Bearing,ball,annular
New Holland Construction
3110-00-555-55331306F-1B1 INTERCHANGEABLE
Bearing,ball,annular
Schatz Bearing Corporation Dba Schatz Bearing Corp
6685-01-046-252482304 INTERCHANGEABLE
Gage,pressure,dial Indicating
Stewart-Warner Corporation
Cross-Reference Index
Part NumberManufacturer
306KS PRIMARY Timken Co Div the Timken Company (USA)
306S PRIMARY Timken Co Div the Timken Company (USA)
Related Parts
3110-00-155-6201INTERCHANGEABLE
BEARING,BALL,ANNULAR
10510
5120-00-223-1945INTERCHANGEABLE
VISE,MACHINIST'S
5120-00-223-1945
3110-00-293-9302INTERCHANGEABLE
BEARING,BALL,ANNULAR
0042980-3
3110-00-555-5533INTERCHANGEABLE
BEARING,BALL,ANNULAR
1306F-1B1
6685-01-046-2524INTERCHANGEABLE
GAGE,PRESSURE,DIAL INDICATING
82304

Frequently Asked Questions

What is NSN 3110-00-156-5173?

NSN 3110-00-156-5173 is a Bearing,ball,annular, manufactured by Timken Co Div the Timken Company, classified under FSC 3110 (No Item Name Available). Status: active.

What are the part numbers for NSN 3110-00-156-5173?

NSN 3110-00-156-5173 has 2 cross-referenced part numbers: 306KS (Timken Co Div the Timken Company), 306S (Timken Co Div the Timken Company).

What NSN replaces 3110-00-156-5173?

There are 5 known substitutes for 3110-00-156-5173: 3110-00-155-6201, 5120-00-223-1945, 3110-00-293-9302 and 2 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 306KS?

Key specifications for 306KS: Self-Alignment Location: EXTERNAL; Alignment Type: SELF-ALIGNING; Style Designator: NON-LOADING GROOVE, NON-SEPARABLE; Standard Tolerance Designation: ABEC NO.1. 12 total characteristics are documented in the Federal Logistics Information System.

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