PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

6603Impeller,pump,centrifugal

Oberdorfer Foundries Inc · NSN 4320-01-081-3369 · FSC 4320 · No Item Name Available
Verified by PartsTable
NSN 4320-01-081-3369 — this item is cataloged by the U.S. Government under National Stock Number 4320-01-081-3369. Primary manufacturer part number: 6603.
Features
  • Impeller,pump,centrifugal — FSC 4320
  • Material: RUBBER CHLOROPRENE CLASS CR
  • Hub Bore Diameter: 0.625 INCHES NOMINAL IN
  • Blade Quantity: 8
  • Rotation Direction for Which Designed: CLOCKWISE OR COUNTERCLOCKWISE
  • Hub Quantity: 1
  • Mounting Method: KEY
  • Overall Diameter: 2.562 INCHES NOMINAL IN
Applications
  • Fluid transfer and circulation
  • Cooling system maintenance
  • Industrial process pumping
  • Applications requiring Rubber Chloroprene Class Cr construction
General Description

The Impeller,pump,centrifugal, cataloged under National Stock Number 4320-01-081-3369, is classified within Federal Supply Class 4320 (No Item Name Available) of the Pumps and Compressors group. The primary manufacturer of record is Oberdorfer Foundries Inc. Government technical data includes 7 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
NSN4320-01-081-3369
Primary Part Number6603
Item NameImpeller,pump,centrifugal
FSC / FSG4320 / 43 — No Item Name Available
ManufacturerOberdorfer Foundries Inc
StatusACTIVE
MaterialRUBBER CHLOROPRENE CLASS CR
Hub Bore Diameter0.625 INCHES NOMINAL IN
Blade Quantity8
Rotation Direction for Which DesignedCLOCKWISE OR COUNTERCLOCKWISE
Hub Quantity1
Mounting MethodKEY
Overall Diameter2.562 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
5940-00-082-4748 INTERCHANGEABLE
Terminal,feedthru
5940-00-177-7929734834-1 INTERCHANGEABLE
Terminal,lug
L3harris Cincinnati Electronics Corporation
4720-00-189-2775SAE-20R1ECS-A-25X914 INTERCHANGEABLE
Hose,nonmetallic
Sae International Dba Sae International
6210-00-300-3553B6603 INTERCHANGEABLE
Light,panel
Grimes Aerospace Company
5975-00-567-27666603 INTERCHANGEABLE
Panel,blank
Ango Electronics Corporation Dba Par Metal Products
2990-00-707-7522T-6603 INTERCHANGEABLE
Muffler,exhaust
Cummins Filtration Inc.
2815-00-710-185119925 INTERCHANGEABLE
Lever Assembly,e,ha
Napco International Llc Dba Napco International Inc
5905-01-039-53322815393 INTERCHANGEABLE
Resistor,variable,wire Wound,pre
Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier
3655-01-134-8410660-3 INTERCHANGEABLE
Intercooler
Graham Corp
5360-01-175-73536603 INTERCHANGEABLE
Spring,helical,compression
Greno Industries, Inc. Dba Greno Industries Inc
Cross-Reference Index
Part NumberManufacturer
B6603 Oberdorfer Foundries Inc (USA)
6603 PRIMARY Oberdorfer Foundries Inc (USA)
Related Parts
5940-00-082-4748INTERCHANGEABLE
TERMINAL,FEEDTHRU
5940-00-177-7929INTERCHANGEABLE
TERMINAL,LUG
734834-1
4720-00-189-2775INTERCHANGEABLE
HOSE,NONMETALLIC
SAE-20R1ECS-A-25X914
6210-00-300-3553INTERCHANGEABLE
LIGHT,PANEL
B6603
5975-00-567-2766INTERCHANGEABLE
PANEL,BLANK
6603
2990-00-707-7522INTERCHANGEABLE
MUFFLER,EXHAUST
T-6603
2815-00-710-1851INTERCHANGEABLE
LEVER ASSEMBLY,E,HA
19925
5905-01-039-5332INTERCHANGEABLE
RESISTOR,VARIABLE,WIRE WOUND,PRE
2815393
3655-01-134-8410INTERCHANGEABLE
INTERCOOLER
660-3
5360-01-175-7353INTERCHANGEABLE
SPRING,HELICAL,COMPRESSION
6603
3610-01-184-7499INTERCHANGEABLE
COLLATOR,PAPER,AUTOMATIC
6603
2920-01-218-5065INTERCHANGEABLE
IGNITION WIRE SET,SPARK PLUG
12043717

Frequently Asked Questions

What is NSN 4320-01-081-3369?

NSN 4320-01-081-3369 is a Impeller,pump,centrifugal, manufactured by Oberdorfer Foundries Inc, classified under FSC 4320 (No Item Name Available). Status: active.

What are the part numbers for NSN 4320-01-081-3369?

NSN 4320-01-081-3369 has 2 cross-referenced part numbers: B6603 (Oberdorfer Foundries Inc), 6603 (Oberdorfer Foundries Inc).

What NSN replaces 4320-01-081-3369?

There are 12 known substitutes for 4320-01-081-3369: 5940-00-082-4748, 5940-00-177-7929, 4720-00-189-2775 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 6603?

Key specifications for 6603: Material: RUBBER CHLOROPRENE CLASS CR; Hub Bore Diameter: 0.625 INCHES NOMINAL IN; Blade Quantity: 8; Rotation Direction for Which Designed: CLOCKWISE OR COUNTERCLOCKWISE. 7 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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