PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

6446Ring,piston

Quincy Compressor Division of Coltec Industries Inc Dba Quincy Compressor Div Quincy Compressor · NSN 4310-01-283-4990 · FSC 4310 · No Item Name Available
Verified by PartsTable
NSN 4310-01-283-4990 — this item is cataloged by the U.S. Government under National Stock Number 4310-01-283-4990. Primary manufacturer part number: 6446.
Features
  • Ring,piston — FSC 4310
  • Radial Wall Thickness: 0.0900 INCHES NOMINAL IN
  • Material: IRON OVERALL
  • 2 verified cross-references
  • Primary manufacturer: Quincy Compressor Division of Coltec Industries Inc Dba Quincy Compressor Div Quincy Compressor
Applications
  • Applications requiring Iron Overall construction
General Description

The Ring,piston, cataloged under National Stock Number 4310-01-283-4990, is classified within Federal Supply Class 4310 (No Item Name Available) of the Pumps and Compressors group. The primary manufacturer of record is Quincy Compressor Division of Coltec Industries Inc Dba Quincy Compressor Div Quincy Compressor. Government technical data includes 2 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4310-01-283-4990
Primary Part Number6446
Item NameRing,piston
FSC / FSG4310 / 43 — No Item Name Available
ManufacturerQuincy Compressor Division of Coltec Industries Inc Dba Quincy Compressor Div Quincy Compressor
StatusACTIVE
Radial Wall Thickness0.0900 INCHES NOMINAL IN
MaterialIRON OVERALL
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
6135-00-043-0021 INTERCHANGEABLE
Battery,nonrechargeable
6240-00-044-42794535 INTERCHANGEABLE
Lamp,incandescent
American National Standards Institute Incorporated Dba American National Standards Institute
3895-00-161-1417 INTERCHANGEABLE
Brake Band Assy
5930-00-188-10263953 INTERCHANGEABLE
Switch,toggle
Bryant Electric
5945-00-355-9497KS14259L1 INTERCHANGEABLE
Relay,time Delay
Lucent Technologies Inc Corporate Headquarters
5340-00-468-0840490722PC37 INTERCHANGEABLE
Seat,helical Compression Spring
Naval Sea Systems Command
5360-01-022-07866446 INTERCHANGEABLE
Spring,helical,compression
Tescom Corp Dba Tescom Div Tescom
5930-01-040-7843 INTERCHANGEABLE
Switch,thermostatic
4820-01-122-9775310116H1 INTERCHANGEABLE
Valve,safety Relief
Curtiss-Wright Electro-Mechanical Corp Dba Steam & Air Solutions Div Curtiss-Wright Steam and Air Solutions
9540-01-300-288051919 INTERCHANGEABLE
Angle,structural
Aluminum Co of America
Cross-Reference Index
Part NumberManufacturer
6446 PRIMARY Quincy Compressor Division of Coltec Industries Inc Dba Quincy Compressor Div Quincy Compressor (USA)
6447 Quincy Compressor Division of Coltec Industries Inc Dba Quincy Compressor Div Quincy Compressor (USA)
Related Parts
6135-00-043-0021INTERCHANGEABLE
BATTERY,NONRECHARGEABLE
6240-00-044-4279INTERCHANGEABLE
LAMP,INCANDESCENT
4535
3895-00-161-1417INTERCHANGEABLE
BRAKE BAND ASSY
5930-00-188-1026INTERCHANGEABLE
SWITCH,TOGGLE
3953
5945-00-355-9497INTERCHANGEABLE
RELAY,TIME DELAY
KS14259L1
5340-00-468-0840INTERCHANGEABLE
SEAT,HELICAL COMPRESSION SPRING
490722PC37
5360-01-022-0786INTERCHANGEABLE
SPRING,HELICAL,COMPRESSION
6446
5930-01-040-7843INTERCHANGEABLE
SWITCH,THERMOSTATIC
4820-01-122-9775INTERCHANGEABLE
VALVE,SAFETY RELIEF
310116H1
9540-01-300-2880INTERCHANGEABLE
ANGLE,STRUCTURAL
51919
4730-01-352-1939INTERCHANGEABLE
COUPLING ASSEMBLY,TUBE,FLEXIBLE
43766
9540-01-381-8762INTERCHANGEABLE
BEAM,STRUCTURAL

Frequently Asked Questions

What is NSN 4310-01-283-4990?

NSN 4310-01-283-4990 is a Ring,piston, manufactured by Quincy Compressor Division of Coltec Industries Inc Dba Quincy Compressor Div Quincy Compressor, classified under FSC 4310 (No Item Name Available). Status: active.

What are the part numbers for NSN 4310-01-283-4990?

NSN 4310-01-283-4990 has 2 cross-referenced part numbers: 6446 (Quincy Compressor Division of Coltec Industries Inc Dba Quincy Compressor Div Quincy Compressor), 6447 (Quincy Compressor Division of Coltec Industries Inc Dba Quincy Compressor Div Quincy Compressor).

What NSN replaces 4310-01-283-4990?

There are 12 known substitutes for 4310-01-283-4990: 6135-00-043-0021, 6240-00-044-4279, 3895-00-161-1417 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 6446?

Key specifications for 6446: End Item Identification: QUINCY COMPRESSOR MODEL 216; Radial Wall Thickness: 0.0900 INCHES NOMINAL IN; Material: IRON OVERALL. 3 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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