PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

20310Bearing,ball,thrust

Department of the Navy · NSN 3110-00-156-1884 · FSC 3110 · No Item Name Available
Verified by PartsTable
NSN 3110-00-156-1884 — this item is cataloged by the U.S. Government under National Stock Number 3110-00-156-1884. Primary manufacturer part number: 20310.
Features
  • Bearing,ball,thrust — FSC 3110
  • Alignment Type: RIGID
  • Bore Smallest Diameter: 50.0 MILLIMETERS NOMINAL MM
  • Overall Outside Diameter: 78.0 MILLIMETERS NOMINAL MM
  • Thrust Directional Capability Designation: SINGLE
  • Standard Tolerance Designation: AFBMA STD TOLERANCE FOR THRUST BEARINGS
  • Surface Finish: GROUND
  • Material: STEEL COMP E51100 OR STEEL COMP E52100 OVERALL
Applications
  • Rotating machinery support and alignment
  • Shaft load distribution
  • Precision spindle assemblies
  • Applications requiring Steel Comp E51100 or Steel Comp E52100 Overall construction
General Description

The Bearing,ball,thrust, cataloged under National Stock Number 3110-00-156-1884, is classified within Federal Supply Class 3110 (No Item Name Available) of the Bearings group. The primary manufacturer of record is Department of the Navy. Government technical data includes 9 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 18 commercial cross-references from 15 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
NSN3110-00-156-1884
Primary Part Number20310
Item NameBearing,ball,thrust
FSC / FSG3110 / 31 — No Item Name Available
ManufacturerDepartment of the Navy
StatusACTIVE
Alignment TypeRIGID
Bore Smallest Diameter50.0 MILLIMETERS NOMINAL MM
Overall Outside Diameter78.0 MILLIMETERS NOMINAL MM
Thrust Directional Capability DesignationSINGLE
Standard Tolerance DesignationAFBMA STD TOLERANCE FOR THRUST BEARINGS
Surface FinishGROUND
MaterialSTEEL COMP E51100 OR STEEL COMP E52100 OVERALL
Material Document and Classification66 FED STD ALL MATERIAL RESPONSES OVERALL
Style DesignatorGROOVED RACE SURFACE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 9
6135-00-043-4312 INTERCHANGEABLE
Battery,nonrechargeable
6680-00-580-0134405005 INTERCHANGEABLE
Indicator,sight,liquid
Dresser Rand Co Terry Corp Steam Turbine Motor and Generator Co a Joint Venture
6680-00-580-0142 INTERCHANGEABLE
Indicator,sight,liquid
6680-01-121-0545SFF3F INTERCHANGEABLE
Indicator,sight,liquid
Tyco Valves & Controls Lp Dba Penberthy
6680-01-141-52822605-1 INTERCHANGEABLE
Indicator,sight,liquid
Clark-Reliance Llc Dba Jacoby-Tarbox
6680-01-148-4677910-F 2.500INCH INTERCHANGEABLE
Indicator,sight,liquid
Clark-Reliance Llc Dba Jacoby-Tarbox
6680-01-179-65222697 INTERCHANGEABLE
Indicator,sight,liquid
Clark-Reliance Llc Dba Jacoby-Tarbox
6680-01-180-8364TMS-5064 INTERCHANGEABLE
Indicator,sight,liquid
Clark-Reliance Llc
5998-01-231-94321110FI INTERCHANGEABLE
Holder,electrical Card
Stanford Applied Engineering Inc
Cross-Reference Index
Part NumberManufacturer
20310 Department of the Navy (USA)
910 Skf Usa Inc. (USA)
A52491-69 Federal Commercial Item Description Promulgated by General Services Administration Washington DC (USA)
3368A Federal-Mogul Corp Government Sales Dept (USA)
191-236 General Motors Corp Electro-Motive Div (USA)
72-6970-943 Coltec Industries Inc Dba Fairbanks Morse Engine Fm/alco (USA)
A-A-52491 Federal Commercial Item Description Promulgated by General Services Administration Washington DC (USA)
N1810 Timken Co Div the Timken Company (USA)
MS17161-69 Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
318073 Westinghouse Electric Corp Power Generation-Generator Div (USA)
910F Mcgill Manufacturing Company Inc Use CAGE Code 92563 for Cataloging. (USA)
1010 Federal-Mogul Corp Government Sales Dept (USA)
25924 Unisys Corp Defense Systems C S D Field Engineering (USA)
318073 Westinghouse Electric Corp (USA)
1110F1 Skf Usa Inc. (USA)
191-236 Hatch & Kirk, Inc. (USA)
1110 Abc Acquisition Company Dba Aetna Bearing Company (USA)
72-6970-943 Fairbanks Morse, Llc (USA)
Related Parts
6135-00-043-4312INTERCHANGEABLE
BATTERY,NONRECHARGEABLE
6680-00-580-0134INTERCHANGEABLE
INDICATOR,SIGHT,LIQUID
405005
6680-00-580-0142INTERCHANGEABLE
INDICATOR,SIGHT,LIQUID
6680-01-121-0545INTERCHANGEABLE
INDICATOR,SIGHT,LIQUID
SFF3F
6680-01-141-5282INTERCHANGEABLE
INDICATOR,SIGHT,LIQUID
2605-1
6680-01-148-4677INTERCHANGEABLE
INDICATOR,SIGHT,LIQUID
910-F 2.500INCH
6680-01-179-6522INTERCHANGEABLE
INDICATOR,SIGHT,LIQUID
2697
6680-01-180-8364INTERCHANGEABLE
INDICATOR,SIGHT,LIQUID
TMS-5064
5998-01-231-9432INTERCHANGEABLE
HOLDER,ELECTRICAL CARD
1110FI

Frequently Asked Questions

What is NSN 3110-00-156-1884?

NSN 3110-00-156-1884 is a Bearing,ball,thrust, manufactured by Department of the Navy, classified under FSC 3110 (No Item Name Available). Status: active.

What are the part numbers for NSN 3110-00-156-1884?

NSN 3110-00-156-1884 has 18 cross-referenced part numbers: 20310 (Department of the Navy), 910 (Skf Usa Inc.), A52491-69 (Federal Commercial Item Description Promulgated by General Services Administration Washington DC), 3368A (Federal-Mogul Corp Government Sales Dept), 191-236 (General Motors Corp Electro-Motive Div) and 13 more.

What NSN replaces 3110-00-156-1884?

There are 9 known substitutes for 3110-00-156-1884: 6135-00-043-4312, 6680-00-580-0134, 6680-00-580-0142 and 6 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 20310?

Key specifications for 20310: Overall Height: 22.0 MILLIMETERS NOMINAL MM; Alignment Type: RIGID; Bore Smallest Diameter: 50.0 MILLIMETERS NOMINAL MM; Overall Outside Diameter: 78.0 MILLIMETERS NOMINAL MM. 10 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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