PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

748-743XBearing,roller,tapered

The Timken Corporation · NSN 3110-00-869-3671 · FSC 3110 · No Item Name Available
Verified by PartsTable
NSN 3110-00-869-3671 — this item is cataloged by the U.S. Government under National Stock Number 3110-00-869-3671. Primary manufacturer part number: 748-743X.
Features
  • Bearing,roller,tapered — FSC 3110
  • Standout Width: 0.3722 INCHES NOMINAL IN
  • Retainer Fabrication Method: PRESSED
  • Cup Width: 1.3780 INCHES NOMINAL IN
  • Bore Diameter: 3.1496 INCHES NOMINAL IN
  • Backface Corner Radius: 0.1200 INCHES NOMINAL IN
  • Material: STEEL OVERALL
  • Standard Tolerance Designation: AFBMA CLASS 2
Applications
  • Rotating machinery support and alignment
  • Shaft load distribution
  • Precision spindle assemblies
  • Applications requiring Steel Overall construction
General Description

The Bearing,roller,tapered, cataloged under National Stock Number 3110-00-869-3671, 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 11 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. 9 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN3110-00-869-3671
Primary Part Number748-743X
Item NameBearing,roller,tapered
FSC / FSG3110 / 31 — No Item Name Available
ManufacturerThe Timken Corporation
StatusACTIVE
Standout Width0.3722 INCHES NOMINAL IN
Retainer Fabrication MethodPRESSED
Cup Width1.3780 INCHES NOMINAL IN
Bore Diameter3.1496 INCHES NOMINAL IN
Backface Corner Radius0.1200 INCHES NOMINAL IN
MaterialSTEEL OVERALL
Standard Tolerance DesignationAFBMA CLASS 2
Style DesignatorSTRAIGHT BORE, NORMAL ANGLE
Cone Width1.8375 INCHES NOMINAL IN
Cone Corner Radius0.1200 INCHES NOMINAL IN
Overall Outside Diameter5.9033 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 9
3110-00-100-063707204 INTERCHANGEABLE
Cup,tapered Roller Bearing
Rbc Bearings Incorporated Div West Trenton Division
5999-00-247-7527SC-B-69870 INTERCHANGEABLE
Contact,electrical
Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir
5360-00-300-765440516 INTERCHANGEABLE
Spring,helical,compression
Bae Systems Land & Armaments L.p.
5950-00-805-8389326800 INTERCHANGEABLE
Transformer,power Autotransforme
Lockheed Martin Librascope Corporation
3110-00-891-51015520186 INTERCHANGEABLE
Bearing,ball,thrust
Skf Usa Inc.
3110-01-056-1575 INTERCHANGEABLE
Bearing,ball,thrust
2590-01-251-501451107 INTERCHANGEABLE
Winch,drum,vehicle Mounting
DP Manufacturing Inc.
5360-01-665-302551107 INTERCHANGEABLE
Spring,helical,compression
Eaton Aerospace Llc Dba Eaton Aerospace Jackson
5330-01-726-043951107 INTERCHANGEABLE
Seal Ring,metal
General Electrodynamics Corporation Dba Nsd Scale
Cross-Reference Index
Part NumberManufacturer
51107 Reliance Electric Industrial Co Master Div (USA)
748-743X PRIMARY The Timken Corporation (USA)
Related Parts
3110-00-100-0637INTERCHANGEABLE
CUP,TAPERED ROLLER BEARING
07204
5999-00-247-7527INTERCHANGEABLE
CONTACT,ELECTRICAL
SC-B-69870
5360-00-300-7654INTERCHANGEABLE
SPRING,HELICAL,COMPRESSION
40516
5950-00-805-8389INTERCHANGEABLE
TRANSFORMER,POWER AUTOTRANSFORME
326800
3110-00-891-5101INTERCHANGEABLE
BEARING,BALL,THRUST
5520186
3110-01-056-1575INTERCHANGEABLE
BEARING,BALL,THRUST
2590-01-251-5014INTERCHANGEABLE
WINCH,DRUM,VEHICLE MOUNTING
51107
5360-01-665-3025INTERCHANGEABLE
SPRING,HELICAL,COMPRESSION
51107
5330-01-726-0439INTERCHANGEABLE
SEAL RING,METAL
51107

Frequently Asked Questions

What is NSN 3110-00-869-3671?

NSN 3110-00-869-3671 is a Bearing,roller,tapered, manufactured by The Timken Corporation, classified under FSC 3110 (No Item Name Available). Status: active.

What are the part numbers for NSN 3110-00-869-3671?

NSN 3110-00-869-3671 has 2 cross-referenced part numbers: 51107 (Reliance Electric Industrial Co Master Div), 748-743X (The Timken Corporation).

What NSN replaces 3110-00-869-3671?

There are 9 known substitutes for 3110-00-869-3671: 3110-00-100-0637, 5999-00-247-7527, 5360-00-300-7654 and 6 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 748-743X?

Key specifications for 748-743X: Standout Width: 0.3722 INCHES NOMINAL IN; Retainer Fabrication Method: PRESSED; Cup Width: 1.3780 INCHES NOMINAL IN; Bore Diameter: 3.1496 INCHES NOMINAL IN. 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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