PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

20279-1Bearing,ball,annular

Schaeffler Aerospace Usa Corp Div Schaeffler Aerospace Usa Corporation · NSN 3110-00-959-3583 · FSC 3110 · No Item Name Available
Verified by PartsTable
NSN 3110-00-959-3583 — this item is cataloged by the U.S. Government under National Stock Number 3110-00-959-3583. Primary manufacturer part number: 20279-1.
Features
  • Bearing,ball,annular — FSC 3110
  • Bore Shape: STRAIGHT
  • Retainer Fabrication Method: MACHINED
  • Load Direction: RADIAL
  • Material Document and Classification: FED-STD-66 FED STD SINGLE MATERIAL RESPONSE INNER RING
  • Material: STEEL COMP E52100 BALL
  • Material: STEEL COMP E52100 INNER RING
  • Style Designator: NON-LOADING GROOVE, NON-SEPARABLE
Applications
  • Rotating machinery support and alignment
  • Shaft load distribution
  • Precision spindle assemblies
  • Applications requiring Steel Comp E52100 Ball construction
General Description

The Bearing,ball,annular, cataloged under National Stock Number 3110-00-959-3583, is classified within Federal Supply Class 3110 (No Item Name Available) of the Bearings group. The primary manufacturer of record is Schaeffler Aerospace Usa Corp Div Schaeffler Aerospace Usa Corporation. Government technical data includes 17 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 7 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: Cancelled.

Technical Specifications
ParameterValue
NSN3110-00-959-3583
Primary Part Number20279-1
Item NameBearing,ball,annular
FSC / FSG3110 / 31 — No Item Name Available
ManufacturerSchaeffler Aerospace Usa Corp Div Schaeffler Aerospace Usa Corporation
StatusCANCELLED
Bore ShapeSTRAIGHT
Retainer Fabrication MethodMACHINED
Load DirectionRADIAL
Material Document and ClassificationFED-STD-66 FED STD SINGLE MATERIAL RESPONSE INNER RING
MaterialSTEEL COMP E52100 BALL
MaterialSTEEL COMP E52100 INNER RING
Style DesignatorNON-LOADING GROOVE, NON-SEPARABLE
MaterialPLASTIC PHENOLIC RETAINER
Material Document and ClassificationFED-STD-66 FED STD SINGLE MATERIAL RESPONSE OUTER RING
Material Document and Classification20279-1,55820 MFR REF SINGLE MATERIAL RESPONSE RETAINER
MaterialSTEEL COMP E52100 OUTER RING
Material Document and ClassificationFED-STD-66 FED STD SINGLE MATERIAL RESPONSE BALL
Bore Diameter0.6691 INCHES MINIMUM AND 0.6693 INCHES MAXIMUM IN
Standard Tolerance DesignationABEC NO.5
Surface FinishGROUND
Internal Clearance0.0060 INCHES MINIMUM AXIAL AND 0.0105 INCHES MAXIMUM AXIAL AND 0.0008 INCHES MINIMUM RADIAL AND 0.0014 INCHES MAXIMUM RADIAL IN
Overall Outside Diameter1.5746 INCHES MINIMUM AND 1.5748 INCHES MAXIMUM IN
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 2
5305-00-021-591213K10 INTERCHANGEABLE
Screw,cap,hexagon Head
Briggs and Stratton Corp
5985-00-864-401520-2791 INTERCHANGEABLE
Antenna
Federal Aviation Administration Dba F a a
Cross-Reference Index
Part NumberManufacturer
D20279-1 Rtx Corporation Div Pratt & Whitney (USA)
203TX7K6 Schaeffler Aerospace Usa Corp Div Schaeffler Aerospace Usa Corporation (USA)
20279-1 PRIMARY Schaeffler Aerospace Usa Corp Div Schaeffler Aerospace Usa Corporation (USA)
20279-1 Rtx Corporation Div Pratt & Whitney (USA)
203TX27 Schaeffler Aerospace Usa Corp Div Schaeffler Aerospace Usa Corporation (USA)
20279-1 Solar Turbines Incorporated Dba Solar Turbines Incorporated (USA)
SA2684 Schaeffler Aerospace Usa Corp Div Schaeffler Aerospace Usa Corporation (USA)
Related Parts
5305-00-021-5912INTERCHANGEABLE
SCREW,CAP,HEXAGON HEAD
13K10
5985-00-864-4015INTERCHANGEABLE
ANTENNA
20-2791

Frequently Asked Questions

What is NSN 3110-00-959-3583?

NSN 3110-00-959-3583 is a Bearing,ball,annular, manufactured by Schaeffler Aerospace Usa Corp Div Schaeffler Aerospace Usa Corporation, classified under FSC 3110 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 3110-00-959-3583?

NSN 3110-00-959-3583 has 7 cross-referenced part numbers: D20279-1 (Rtx Corporation Div Pratt & Whitney), 203TX7K6 (Schaeffler Aerospace Usa Corp Div Schaeffler Aerospace Usa Corporation), 20279-1 (Schaeffler Aerospace Usa Corp Div Schaeffler Aerospace Usa Corporation), 20279-1 (Rtx Corporation Div Pratt & Whitney), 203TX27 (Schaeffler Aerospace Usa Corp Div Schaeffler Aerospace Usa Corporation) and 2 more.

What NSN replaces 3110-00-959-3583?

There are 2 known substitutes for 3110-00-959-3583: 5305-00-021-5912, 5985-00-864-4015. Verify interchangeability with system specifications before substitution.

What are the specifications of 20279-1?

Key specifications for 20279-1: Bore Shape: STRAIGHT; Retainer Fabrication Method: MACHINED; Load Direction: RADIAL; Material Document and Classification: FED-STD-66 FED STD SINGLE MATERIAL RESPONSE INNER RING. 19 total characteristics are documented in the Federal Logistics Information System.

Is NSN 3110-00-959-3583 still in active supply?

NSN 3110-00-959-3583 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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