PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

F-21Bearing,ball,thrust

Abc Acquisition Company Dba Aetna Bearing Company · NSN 3110-01-381-9813 · FSC 3110 · No Item Name Available
Verified by PartsTable
NSN 3110-01-381-9813 — this item is cataloged by the U.S. Government under National Stock Number 3110-01-381-9813. Primary manufacturer part number: F-21.
Features
  • Bearing,ball,thrust — FSC 3110
  • Alignment Type: RIGID
  • Overall Outside Diameter: 3.0938 INCHES NOMINAL IN
  • Style Designator: GROOVED RACE SURFACE
  • Thrust Directional Capability Designation: SINGLE
  • Surface Finish: GROUND
  • Bore Smallest Diameter: 1.7500 INCHES NOMINAL IN
  • Material: STEEL OVERALL
Applications
  • Rotating machinery support and alignment
  • Shaft load distribution
  • Precision spindle assemblies
  • Applications requiring Steel Overall construction
General Description

The Bearing,ball,thrust, cataloged under National Stock Number 3110-01-381-9813, is classified within Federal Supply Class 3110 (No Item Name Available) of the Bearings group. The primary manufacturer of record is Abc Acquisition Company Dba Aetna Bearing Company. Government technical data includes 7 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. 5 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN3110-01-381-9813
Primary Part NumberF-21
Item NameBearing,ball,thrust
FSC / FSG3110 / 31 — No Item Name Available
ManufacturerAbc Acquisition Company Dba Aetna Bearing Company
StatusACTIVE
Alignment TypeRIGID
Overall Outside Diameter3.0938 INCHES NOMINAL IN
Style DesignatorGROOVED RACE SURFACE
Thrust Directional Capability DesignationSINGLE
Surface FinishGROUND
Bore Smallest Diameter1.7500 INCHES NOMINAL IN
MaterialSTEEL OVERALL
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 5
5325-00-240-3866 INTERCHANGEABLE
Slide Fastener,metal
1680-00-428-3161 INTERCHANGEABLE
Universal Joint,aircraft
2590-00-460-4523 INTERCHANGEABLE
Wiper Seal
3120-00-966-6348SB5200-1 INTERCHANGEABLE
Bearing,sleeve
Kamatics Corporation
4330-01-051-3098131136-01-20-0035 INTERCHANGEABLE
Filter,fluid
Solventum Purification Inc. Div Filtration and Separation Division
Cross-Reference Index
Part NumberManufacturer
GT-21 Schaeffler Group Usa Inc (USA)
F-21 PRIMARY Abc Acquisition Company Dba Aetna Bearing Company (USA)
Related Parts
5325-00-240-3866INTERCHANGEABLE
SLIDE FASTENER,METAL
1680-00-428-3161INTERCHANGEABLE
UNIVERSAL JOINT,AIRCRAFT
2590-00-460-4523INTERCHANGEABLE
WIPER SEAL
3120-00-966-6348INTERCHANGEABLE
BEARING,SLEEVE
SB5200-1
4330-01-051-3098INTERCHANGEABLE
FILTER,FLUID
131136-01-20-0035

Frequently Asked Questions

What is NSN 3110-01-381-9813?

NSN 3110-01-381-9813 is a Bearing,ball,thrust, manufactured by Abc Acquisition Company Dba Aetna Bearing Company, classified under FSC 3110 (No Item Name Available). Status: active.

What are the part numbers for NSN 3110-01-381-9813?

NSN 3110-01-381-9813 has 2 cross-referenced part numbers: GT-21 (Schaeffler Group Usa Inc), F-21 (Abc Acquisition Company Dba Aetna Bearing Company).

What NSN replaces 3110-01-381-9813?

There are 5 known substitutes for 3110-01-381-9813: 5325-00-240-3866, 1680-00-428-3161, 2590-00-460-4523 and 2 more. Verify interchangeability with system specifications before substitution.

What are the specifications of F-21?

Key specifications for F-21: Overall Height: 0.8125 INCHES NOMINAL IN; Alignment Type: RIGID; Overall Outside Diameter: 3.0938 INCHES NOMINAL IN; Style Designator: GROOVED RACE SURFACE. 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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