PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

6643Plate,retaining,bearing

Quincy Compressor Division of Coltec Industries Inc Dba Quincy Compressor Div Quincy Compressor · NSN 3110-01-098-1244 · FSC 3110 · No Item Name Available
Verified by PartsTable
NSN 3110-01-098-1244 — this item is cataloged by the U.S. Government under National Stock Number 3110-01-098-1244. Primary manufacturer part number: 6643.
Features
  • Plate,retaining,bearing — FSC 3110
  • Bolt Circle Hole Quantity: 4
  • Mounting Hole Arrangement Style: SINGLE BOLT HOLE CIRCLE
  • Outside Raised Surface Diameter: 4.368 INCHES MINIMUM AND 4.370 INCHES MAXIMUM IN
  • Material: IRON CAST OVERALL
  • Outside Diameter: 6.500 INCHES NOMINAL IN
  • Raised Surface Height: 0.245 INCHES MINIMUM AND 0.255 INCHES MAXIMUM IN
  • Mounting Hole Type: ROUND, UNTHREADED
Applications
  • Rotating machinery support and alignment
  • Shaft load distribution
  • Precision spindle assemblies
  • Applications requiring Iron Cast Overall construction
General Description

The Plate,retaining,bearing, cataloged under National Stock Number 3110-01-098-1244, is classified within Federal Supply Class 3110 (No Item Name Available) of the Bearings group. The primary manufacturer of record is Quincy Compressor Division of Coltec Industries Inc Dba Quincy Compressor Div Quincy Compressor. Government technical data includes 10 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 6 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN3110-01-098-1244
Primary Part Number6643
Item NamePlate,retaining,bearing
FSC / FSG3110 / 31 — No Item Name Available
ManufacturerQuincy Compressor Division of Coltec Industries Inc Dba Quincy Compressor Div Quincy Compressor
StatusACTIVE
Bolt Circle Hole Quantity4
Mounting Hole Arrangement StyleSINGLE BOLT HOLE CIRCLE
Outside Raised Surface Diameter4.368 INCHES MINIMUM AND 4.370 INCHES MAXIMUM IN
MaterialIRON CAST OVERALL
Outside Diameter6.500 INCHES NOMINAL IN
Raised Surface Height0.245 INCHES MINIMUM AND 0.255 INCHES MAXIMUM IN
Mounting Hole TypeROUND, UNTHREADED
Mounting Bolt Circle Diameter5.500 INCHES NOMINAL IN
Aperture Diameter2.135 INCHES MINIMUM AND 2.140 INCHES MAXIMUM IN
Mounting Hole Diameter0.562 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 6
3110-00-198-1191Z48RETR INTERCHANGEABLE
Retainer,ball,bearing
Schaeffler Aerospace Usa Corp Div Schaeffler Aerospace Usa Corporation
5935-00-481-5563 INTERCHANGEABLE
Connector,receptacle,electrical
2920-00-695-5926 INTERCHANGEABLE
Drive,engine,electrical Starter
5995-01-186-6029 INTERCHANGEABLE
Spark Plug Wire Set
5136-01-431-19106643 INTERCHANGEABLE
Die,thread Cutting
Stanley Tools Div of Stanley Works
4310-01-655-036293543 INTERCHANGEABLE
Vacuum Pump,diffusion
Ritchie Engineering Co Inc
Cross-Reference Index
Part NumberManufacturer
6643 PRIMARY Quincy Compressor Division of Coltec Industries Inc Dba Quincy Compressor Div Quincy Compressor (USA)
Related Parts
3110-00-198-1191INTERCHANGEABLE
RETAINER,BALL,BEARING
Z48RETR
5935-00-481-5563INTERCHANGEABLE
CONNECTOR,RECEPTACLE,ELECTRICAL
2920-00-695-5926INTERCHANGEABLE
DRIVE,ENGINE,ELECTRICAL STARTER
5995-01-186-6029INTERCHANGEABLE
SPARK PLUG WIRE SET
5136-01-431-1910INTERCHANGEABLE
DIE,THREAD CUTTING
6643
4310-01-655-0362INTERCHANGEABLE
VACUUM PUMP,DIFFUSION
93543

Frequently Asked Questions

What is NSN 3110-01-098-1244?

NSN 3110-01-098-1244 is a Plate,retaining,bearing, manufactured by Quincy Compressor Division of Coltec Industries Inc Dba Quincy Compressor Div Quincy Compressor, classified under FSC 3110 (No Item Name Available). Status: active.

What are the part numbers for NSN 3110-01-098-1244?

NSN 3110-01-098-1244 has 1 cross-referenced part number: 6643 (Quincy Compressor Division of Coltec Industries Inc Dba Quincy Compressor Div Quincy Compressor).

What NSN replaces 3110-01-098-1244?

There are 6 known substitutes for 3110-01-098-1244: 3110-00-198-1191, 5935-00-481-5563, 2920-00-695-5926 and 3 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 6643?

Key specifications for 6643: Bolt Circle Hole Quantity: 4; Mounting Hole Arrangement Style: SINGLE BOLT HOLE CIRCLE; Outside Raised Surface Diameter: 4.368 INCHES MINIMUM AND 4.370 INCHES MAXIMUM IN; Material: IRON CAST OVERALL. 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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