PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

520XCup,tapered Roller Bearing

The Timken Corporation · NSN 3110-01-193-6966 · FSC 3110 · No Item Name Available
Verified by PartsTable
NSN 3110-01-193-6966 — this item is cataloged by the U.S. Government under National Stock Number 3110-01-193-6966. Primary manufacturer part number: 520X.
Features
  • Cup,tapered Roller Bearing — FSC 3110
  • Standard Tolerance Designation: AFBMA CLASS 2
  • Outside Diameter: 3.9370 INCHES NOMINAL IN
  • Style Designator: NORMAL ANGLE
  • Alignment Type: RIGID
  • Material: STEEL OVERALL
  • Backface Corner Radius: 0.1300 INCHES NOMINAL IN
  • 2 verified cross-references
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 3110-01-193-6966, 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 6 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN3110-01-193-6966
Primary Part Number520X
Item NameCup,tapered Roller Bearing
FSC / FSG3110 / 31 — No Item Name Available
ManufacturerThe Timken Corporation
StatusACTIVE
Standard Tolerance DesignationAFBMA CLASS 2
Outside Diameter3.9370 INCHES NOMINAL IN
Style DesignatorNORMAL ANGLE
Alignment TypeRIGID
MaterialSTEEL OVERALL
Backface Corner Radius0.1300 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 3
2520-00-532-7243A226284 INTERCHANGEABLE
Parts Kit,universal Joint
U S Army Tank Automotive Command Amsta-Im-Mm
5342-00-586-4361520 X INTERCHANGEABLE
Door,access,weapon System
Switchcraft Inc.
1680-01-580-3298520X INTERCHANGEABLE
Jax Cover Rohs
Textron Aviation Inc
Cross-Reference Index
Part NumberManufacturer
9424972 Terex Corp (USA)
520X PRIMARY The Timken Corporation (USA)
Related Parts
2520-00-532-7243INTERCHANGEABLE
PARTS KIT,UNIVERSAL JOINT
A226284
5342-00-586-4361INTERCHANGEABLE
DOOR,ACCESS,WEAPON SYSTEM
520 X
1680-01-580-3298INTERCHANGEABLE
JAX COVER ROHS
520X

Frequently Asked Questions

What is NSN 3110-01-193-6966?

NSN 3110-01-193-6966 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 3110-01-193-6966?

NSN 3110-01-193-6966 has 2 cross-referenced part numbers: 9424972 (Terex Corp), 520X (The Timken Corporation).

What NSN replaces 3110-01-193-6966?

There are 3 known substitutes for 3110-01-193-6966: 2520-00-532-7243, 5342-00-586-4361, 1680-01-580-3298. Verify interchangeability with system specifications before substitution.

What are the specifications of 520X?

Key specifications for 520X: Standard Tolerance Designation: AFBMA CLASS 2; Outside Diameter: 3.9370 INCHES NOMINAL IN; Style Designator: NORMAL ANGLE; Overall Width: 1.0625 INCHES NOMINAL IN. 7 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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