PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

A20839Cup,tapered Roller Bearing

The Timken Corporation · NSN 3110-00-529-9450 · FSC 3110 · No Item Name Available
Verified by PartsTable
NSN 3110-00-529-9450 — this item is cataloged by the U.S. Government under National Stock Number 3110-00-529-9450. Primary manufacturer part number: A20839.
Features
  • Cup,tapered Roller Bearing — FSC 3110
  • Outside Diameter: 2.7170 INCHES NOMINAL IN
  • Standard Tolerance Designation: AFBMA CLASS 2
  • Material: STEEL OVERALL
  • Style Designator: NORMAL ANGLE
  • Backface Corner Radius: 0.0310 INCHES NOMINAL IN
  • 4 verified cross-references
  • Primary manufacturer: The Timken Corporation
Applications
  • Rotating machinery support and alignment
  • Shaft load distribution
  • Precision spindle assemblies
  • Applications requiring Steel Overall construction
General Description

The Cup,tapered Roller Bearing, cataloged under National Stock Number 3110-00-529-9450, is classified within Federal Supply Class 3110 (No Item Name Available) of the Bearings group. The primary manufacturer of record is The Timken Corporation. Government technical data includes 5 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN3110-00-529-9450
Primary Part NumberA20839
Item NameCup,tapered Roller Bearing
FSC / FSG3110 / 31 — No Item Name Available
ManufacturerThe Timken Corporation
StatusACTIVE
Outside Diameter2.7170 INCHES NOMINAL IN
Standard Tolerance DesignationAFBMA CLASS 2
MaterialSTEEL OVERALL
Style DesignatorNORMAL ANGLE
Backface Corner Radius0.0310 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
2805-00-011-8504 INTERCHANGEABLE
Tappet,engine Poppet Valve
5305-00-269-3213MS90725-62 INTERCHANGEABLE
Screw,cap,hexagon Head
National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
6150-00-296-2039 INTERCHANGEABLE
Cable Assembly,special Purpose,e
6620-00-333-4045444397 INTERCHANGEABLE
Gage,pressure,dial Indicating
Stewart-Warner Corporation
6615-00-373-9433 INTERCHANGEABLE
Dial Asy,inclinomet
5330-00-433-375213620 INTERCHANGEABLE
Gasket
Southern Gear & Machine Inc
6685-00-691-070182208 INTERCHANGEABLE
Gage,pressure,dial Indicating
Stewart-Warner Corporation
5935-00-935-2231 INTERCHANGEABLE
Socket,plug-in Electronic Compon
8040-01-024-699373656 INTERCHANGEABLE
Primer,adhesive
Loctite Corp
5950-01-068-271213620 INTERCHANGEABLE
Transformer,power
Power-One DC Power Supplies
Cross-Reference Index
Part NumberManufacturer
A20839 PRIMARY The Timken Corporation (USA)
135537 Tennant Company (USA)
10A6834 White Farm Equipment Co Sub of Tic Investment Inc (USA)
13620 The Timken Corporation (USA)
Related Parts
2805-00-011-8504INTERCHANGEABLE
TAPPET,ENGINE POPPET VALVE
5305-00-269-3213INTERCHANGEABLE
SCREW,CAP,HEXAGON HEAD
MS90725-62
6150-00-296-2039INTERCHANGEABLE
CABLE ASSEMBLY,SPECIAL PURPOSE,E
6620-00-333-4045INTERCHANGEABLE
GAGE,PRESSURE,DIAL INDICATING
444397
6615-00-373-9433INTERCHANGEABLE
DIAL ASY,INCLINOMET
5330-00-433-3752INTERCHANGEABLE
GASKET
13620
6685-00-691-0701INTERCHANGEABLE
GAGE,PRESSURE,DIAL INDICATING
82208
5935-00-935-2231INTERCHANGEABLE
SOCKET,PLUG-IN ELECTRONIC COMPON
8040-01-024-6993INTERCHANGEABLE
PRIMER,ADHESIVE
73656
5950-01-068-2712INTERCHANGEABLE
TRANSFORMER,POWER
13620
5930-01-277-0686INTERCHANGEABLE
SWITCH,PUSH
13620
6105-01-576-9045INTERCHANGEABLE
COVER,ELECTRIC MOTOR
13620

Frequently Asked Questions

What is NSN 3110-00-529-9450?

NSN 3110-00-529-9450 is a Cup,tapered Roller Bearing, manufactured by The Timken Corporation, classified under FSC 3110 (No Item Name Available). Status: active.

What are the part numbers for NSN 3110-00-529-9450?

NSN 3110-00-529-9450 has 4 cross-referenced part numbers: A20839 (The Timken Corporation), 135537 (Tennant Company), 10A6834 (White Farm Equipment Co Sub of Tic Investment Inc), 13620 (The Timken Corporation).

What NSN replaces 3110-00-529-9450?

There are 12 known substitutes for 3110-00-529-9450: 2805-00-011-8504, 5305-00-269-3213, 6150-00-296-2039 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of A20839?

Key specifications for A20839: Outside Diameter: 2.7170 INCHES NOMINAL IN; Overall Width: 0.5938 INCHES NOMINAL IN; Standard Tolerance Designation: AFBMA CLASS 2; Material: STEEL OVERALL. 6 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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