PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

BT3720BCup,tapered Roller Bearing

Federal-Mogul Corp Government Sales Dept · NSN 3110-00-142-4410 · FSC 3110 · No Item Name Available
Verified by PartsTable
NSN 3110-00-142-4410 — this item is cataloged by the U.S. Government under National Stock Number 3110-00-142-4410. Primary manufacturer part number: BT3720B.
Features
  • Cup,tapered Roller Bearing — FSC 3110
  • Standard Tolerance Designation: AFBMA CLASS 2
  • Outer Ring Outside Diameter: 3.6718 INCHES NOMINAL IN
  • Backface Corner Radius: 0.1250 INCHES NOMINAL IN
  • Flange Outside Diameter: 3.8558 INCHES NOMINAL IN
  • Flange Width: 0.1875 INCHES NOMINAL IN
  • Material: STEEL OVERALL
  • Style Designator: NORMAL ANGLE, FLANGED
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 3110-00-142-4410, is classified within Federal Supply Class 3110 (No Item Name Available) of the Bearings group. The primary manufacturer of record is Federal-Mogul Corp Government Sales Dept. Government technical data includes 7 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN3110-00-142-4410
Primary Part NumberBT3720B
Item NameCup,tapered Roller Bearing
FSC / FSG3110 / 31 — No Item Name Available
ManufacturerFederal-Mogul Corp Government Sales Dept
StatusACTIVE
Standard Tolerance DesignationAFBMA CLASS 2
Outer Ring Outside Diameter3.6718 INCHES NOMINAL IN
Backface Corner Radius0.1250 INCHES NOMINAL IN
Flange Outside Diameter3.8558 INCHES NOMINAL IN
Flange Width0.1875 INCHES NOMINAL IN
MaterialSTEEL OVERALL
Style DesignatorNORMAL ANGLE, FLANGED
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 2
4730-00-391-3735NAS1922-0150-3B INTERCHANGEABLE
Clamp,hose
National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
5935-00-777-3470 INTERCHANGEABLE
Connector,plug,electrical
Cross-Reference Index
Part NumberManufacturer
BT3720B PRIMARY Federal-Mogul Corp Government Sales Dept (USA)
3B1525 PRIMARY Caterpillar Inc Div Caterpillar Defense (USA)
3720B PRIMARY The Timken Corporation (USA)
Related Parts
4730-00-391-3735INTERCHANGEABLE
CLAMP,HOSE
NAS1922-0150-3B
5935-00-777-3470INTERCHANGEABLE
CONNECTOR,PLUG,ELECTRICAL

Frequently Asked Questions

What is NSN 3110-00-142-4410?

NSN 3110-00-142-4410 is a Cup,tapered Roller Bearing, manufactured by Federal-Mogul Corp Government Sales Dept, classified under FSC 3110 (No Item Name Available). Status: active.

What are the part numbers for NSN 3110-00-142-4410?

NSN 3110-00-142-4410 has 3 cross-referenced part numbers: BT3720B (Federal-Mogul Corp Government Sales Dept), 3B1525 (Caterpillar Inc Div Caterpillar Defense), 3720B (The Timken Corporation).

What NSN replaces 3110-00-142-4410?

There are 2 known substitutes for 3110-00-142-4410: 4730-00-391-3735, 5935-00-777-3470. Verify interchangeability with system specifications before substitution.

What are the specifications of BT3720B?

Key specifications for BT3720B: Standard Tolerance Designation: AFBMA CLASS 2; Outer Ring Outside Diameter: 3.6718 INCHES NOMINAL IN; Backface Corner Radius: 0.1250 INCHES NOMINAL IN; Flange Outside Diameter: 3.8558 INCHES NOMINAL IN. 8 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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