PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

177343Bearing,ball,annular

Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney · NSN 3110-00-227-3999 · FSC 3110 · No Item Name Available
Verified by PartsTable
NSN 3110-00-227-3999 — this item is cataloged by the U.S. Government under National Stock Number 3110-00-227-3999. Primary manufacturer part number: 177343.
Features
  • Bearing,ball,annular — FSC 3110
  • Surface Finish: GROUND
  • Bore Diameter: 9.00 MILLIMETERS NOMINAL MM
  • Retainer Fabrication Method: PRESSED
  • Standard Tolerance Designation: ABEC NO.1
  • Internal Fit-Up Designation: STANDARD
  • Lubrication Material: GREASE
  • Shield Quantity: 2
Applications
  • Rotating machinery support and alignment
  • Shaft load distribution
  • Precision spindle assemblies
  • Applications requiring Steel Overall construction
General Description

The Bearing,ball,annular, cataloged under National Stock Number 3110-00-227-3999, is classified within Federal Supply Class 3110 (No Item Name Available) of the Bearings group. The primary manufacturer of record is Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney. Government technical data includes 13 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 5 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN3110-00-227-3999
Primary Part Number177343
Item NameBearing,ball,annular
FSC / FSG3110 / 31 — No Item Name Available
ManufacturerRtx Corporation Dba Pratt & Whitney Div Pratt &whitney
StatusCANCELLED
Surface FinishGROUND
Bore Diameter9.00 MILLIMETERS NOMINAL MM
Retainer Fabrication MethodPRESSED
Standard Tolerance DesignationABEC NO.1
Internal Fit-Up DesignationSTANDARD
Lubrication MaterialGREASE
Shield Quantity2
Bore ShapeSTRAIGHT
Load DirectionRADIAL
Lubrication Material Document and ClassificationMIL-G-23827 MIL SPEC SINGLE MATERIAL RESPONSE
MaterialSTEEL OVERALL
Style DesignatorNON-LOADING GROOVE, NON-SEPARABLE
Overall Outside Diameter26.00 MILLIMETERS NOMINAL MM
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 5
5340-00-340-9937177343 INTERCHANGEABLE
Clip,spring Tension
Lockheed Martin Corp
3120-00-424-7152180554 INTERCHANGEABLE
Bushing,sleeve
Telemechanics Inc
5961-00-617-4750 INTERCHANGEABLE
Semiconductor Device,diode
5331-01-271-2530180-554 INTERCHANGEABLE
O-Ring
Vacco Industries
7220-01-542-8536CSS1836-30-T-W INTERCHANGEABLE
Mat,adhesive
Controlled Environment Equipment Corporation
Cross-Reference Index
Part NumberManufacturer
261143 Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney (USA)
180554 Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney (USA)
177343 PRIMARY Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney (USA)
Related Parts
5340-00-340-9937INTERCHANGEABLE
CLIP,SPRING TENSION
177343
3120-00-424-7152INTERCHANGEABLE
BUSHING,SLEEVE
180554
5961-00-617-4750INTERCHANGEABLE
SEMICONDUCTOR DEVICE,DIODE
5331-01-271-2530INTERCHANGEABLE
O-RING
180-554
7220-01-542-8536INTERCHANGEABLE
MAT,ADHESIVE
CSS1836-30-T-W

Frequently Asked Questions

What is NSN 3110-00-227-3999?

NSN 3110-00-227-3999 is a Bearing,ball,annular, manufactured by Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney, classified under FSC 3110 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 3110-00-227-3999?

NSN 3110-00-227-3999 has 3 cross-referenced part numbers: 261143 (Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney), 180554 (Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney), 177343 (Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney).

What NSN replaces 3110-00-227-3999?

There are 5 known substitutes for 3110-00-227-3999: 5340-00-340-9937, 3120-00-424-7152, 5961-00-617-4750 and 2 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 177343?

Key specifications for 177343: Surface Finish: GROUND; Bore Diameter: 9.00 MILLIMETERS NOMINAL MM; Retainer Fabrication Method: PRESSED; Standard Tolerance Designation: ABEC NO.1. 14 total characteristics are documented in the Federal Logistics Information System.

Is NSN 3110-00-227-3999 still in active supply?

NSN 3110-00-227-3999 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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