PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

A2101Bearing,ball,thrust

Automotive Thrust Bearing Corp · NSN 3110-00-155-9143 · FSC 3110 · No Item Name Available
Verified by PartsTable
NSN 3110-00-155-9143 — this item is cataloged by the U.S. Government under National Stock Number 3110-00-155-9143. Primary manufacturer part number: A2101.
Features
  • Bearing,ball,thrust — FSC 3110
  • Alignment Type: RIGID
  • Bore Smallest Diameter: 0.5040 INCHES MINIMUM AND 0.5060 INCHES MAXIMUM IN
  • Overall Outside Diameter: 1.2168 INCHES MINIMUM AND 1.2188 INCHES MAXIMUM IN
  • Surface Finish: GROUND
  • Thrust Directional Capability Designation: SINGLE
  • Style Designator: FLAT RACE SURFACE, STAGGERED BALL RETAINER
  • Material Document and Classification: 66 FED STD ALL MATERIAL RESPONSES OVERALL
Applications
  • Rotating machinery support and alignment
  • Shaft load distribution
  • Precision spindle assemblies
  • Applications requiring Steel Comp E51100 or Steel Comp E52100 Overall construction
General Description

The Bearing,ball,thrust, cataloged under National Stock Number 3110-00-155-9143, is classified within Federal Supply Class 3110 (No Item Name Available) of the Bearings group. The primary manufacturer of record is Automotive Thrust Bearing Corp. Government technical data includes 8 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 16 commercial cross-references from 8 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN3110-00-155-9143
Primary Part NumberA2101
Item NameBearing,ball,thrust
FSC / FSG3110 / 31 — No Item Name Available
ManufacturerAutomotive Thrust Bearing Corp
StatusCANCELLED
Alignment TypeRIGID
Bore Smallest Diameter0.5040 INCHES MINIMUM AND 0.5060 INCHES MAXIMUM IN
Overall Outside Diameter1.2168 INCHES MINIMUM AND 1.2188 INCHES MAXIMUM IN
Surface FinishGROUND
Thrust Directional Capability DesignationSINGLE
Style DesignatorFLAT RACE SURFACE, STAGGERED BALL RETAINER
Material Document and Classification66 FED STD ALL MATERIAL RESPONSES OVERALL
MaterialSTEEL COMP E51100 OR STEEL COMP E52100 OVERALL
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
7520-00-155-6929 INTERCHANGEABLE
Pen,recording
6140-00-191-8506A-A-55439-3-1-475-D INTERCHANGEABLE
Battery,storage
National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
6210-00-233-5375502-1010-2131-102 INTERCHANGEABLE
Light,indicator
Dialight Corporation
8135-00-240-15030920546 INTERCHANGEABLE
Wrapper,coin
Odp Business Solutions, Llc Dba Office Depot 2160
5950-00-244-8282FT1 INTERCHANGEABLE
Transformer,power
Magnetika Inc
8030-00-247-2525 INTERCHANGEABLE
Sealing Compound
6695-00-349-60401C INTERCHANGEABLE
Vibrometer,electric
Vibroscope Co Inc the
2805-00-374-4173 INTERCHANGEABLE
Retainer,valve Spri
5315-00-465-24535677 INTERCHANGEABLE
Pin
Eaton Aerospace, Llc Dba Jackson South
5999-00-488-9980119-0101-00-0-009 INTERCHANGEABLE
Mounting Pad,electrical-Electron
Itt Cannon Rf Products
Cross-Reference Index
Part NumberManufacturer
A2101 Automotive Thrust Bearing Corp (USA)
2C193PC5677 Cooper Cameron Corp Ajax-Superior Div (USA)
KAFIR Cooper Cameron Corp Ajax-Superior Div (USA)
W1978PC5677 Cooper Cameron Corp Ajax-Superior Div (USA)
1107RB3 Cooper Cameron Corp Ajax-Superior Div (USA)
FT1 Andrews Bearing Corp Div of Mpb Corp Sub of Wheelabrator-Frye Inc (USA)
MS17162-1 Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
B1 Abc Acquisition Company Dba Aetna Bearing Company (USA)
5677 Cooper Cameron Corp Ajax-Superior Div (USA)
W8PC5677 Cooper Cameron Corp Ajax-Superior Div (USA)
B1 Cooper Cameron Corp Ajax-Superior Div (USA)
859E Cooper Cameron Corp Ajax-Superior Div (USA)
A1 Gwilliam Company, Inc. Div Ball & Roller Bearing Division (USA)
A3201 Automotive Thrust Bearing Corp (USA)
KAFIR Timken Aerospace, Inc Dba Torrington Product (USA)
1C Skf Usa Inc. (USA)
Related Parts
7520-00-155-6929INTERCHANGEABLE
PEN,RECORDING
6140-00-191-8506INTERCHANGEABLE
BATTERY,STORAGE
A-A-55439-3-1-475-D
6210-00-233-5375INTERCHANGEABLE
LIGHT,INDICATOR
502-1010-2131-102
8135-00-240-1503INTERCHANGEABLE
WRAPPER,COIN
0920546
5950-00-244-8282INTERCHANGEABLE
TRANSFORMER,POWER
FT1
8030-00-247-2525INTERCHANGEABLE
SEALING COMPOUND
6695-00-349-6040INTERCHANGEABLE
VIBROMETER,ELECTRIC
1C
2805-00-374-4173INTERCHANGEABLE
RETAINER,VALVE SPRI
5315-00-465-2453INTERCHANGEABLE
PIN
5677
5999-00-488-9980INTERCHANGEABLE
MOUNTING PAD,ELECTRICAL-ELECTRON
119-0101-00-0-009
5905-00-556-7212INTERCHANGEABLE
RESISTOR,THERMAL
A40191
2805-00-696-6937INTERCHANGEABLE
OIL PAN

Frequently Asked Questions

What is NSN 3110-00-155-9143?

NSN 3110-00-155-9143 is a Bearing,ball,thrust, manufactured by Automotive Thrust Bearing Corp, classified under FSC 3110 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 3110-00-155-9143?

NSN 3110-00-155-9143 has 16 cross-referenced part numbers: A2101 (Automotive Thrust Bearing Corp), 2C193PC5677 (Cooper Cameron Corp Ajax-Superior Div), KAFIR (Cooper Cameron Corp Ajax-Superior Div), W1978PC5677 (Cooper Cameron Corp Ajax-Superior Div), 1107RB3 (Cooper Cameron Corp Ajax-Superior Div) and 11 more.

What NSN replaces 3110-00-155-9143?

There are 12 known substitutes for 3110-00-155-9143: 7520-00-155-6929, 6140-00-191-8506, 6210-00-233-5375 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of A2101?

Key specifications for A2101: Alignment Type: RIGID; Overall Height: 0.5575 INCHES MINIMUM AND 0.5675 INCHES MAXIMUM IN; Bore Smallest Diameter: 0.5040 INCHES MINIMUM AND 0.5060 INCHES MAXIMUM IN; Overall Outside Diameter: 1.2168 INCHES MINIMUM AND 1.2188 INCHES MAXIMUM IN. 9 total characteristics are documented in the Federal Logistics Information System.

Is NSN 3110-00-155-9143 still in active supply?

NSN 3110-00-155-9143 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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