PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

203206Rotor,pump

Dover Pumps & Process Solutions Segment Inc Dba Blackmer Div Blackmer · NSN 4320-00-577-7996 · FSC 4320 · No Item Name Available
Verified by PartsTable
NSN 4320-00-577-7996 — this item is cataloged by the U.S. Government under National Stock Number 4320-00-577-7996. Primary manufacturer part number: 203206.
Features
  • Rotor,pump — FSC 4320
  • Pump Design Control Activity: 07524
  • Outside Diameter: 3.125 INCHES NOMINAL IN
  • Inside Diameter: 1.250 INCHES NOMINAL IN
  • Material: COPPER ALLOY
  • 2 verified cross-references
  • Primary manufacturer: Dover Pumps & Process Solutions Segment Inc Dba Blackmer Div Blackmer
Applications
  • Fluid transfer and circulation
  • Cooling system maintenance
  • Industrial process pumping
  • Applications requiring Copper Alloy construction
General Description

The Rotor,pump, cataloged under National Stock Number 4320-00-577-7996, is classified within Federal Supply Class 4320 (No Item Name Available) of the Pumps and Compressors group. The primary manufacturer of record is Dover Pumps & Process Solutions Segment Inc Dba Blackmer Div Blackmer. Government technical data includes 4 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. 6 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4320-00-577-7996
Primary Part Number203206
Item NameRotor,pump
FSC / FSG4320 / 43 — No Item Name Available
ManufacturerDover Pumps & Process Solutions Segment Inc Dba Blackmer Div Blackmer
StatusACTIVE
Pump Design Control Activity07524
Outside Diameter3.125 INCHES NOMINAL IN
Inside Diameter1.250 INCHES NOMINAL IN
MaterialCOPPER ALLOY
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 6
5440-00-061-8900202206 INTERCHANGEABLE
Stepladder
Green Bull, Inc
1660-00-822-3125203206 INTERCHANGEABLE
Turbine Wheel Assembly,aircraft
Honeywell International Inc. Div Aerospace - Torrance
5310-01-171-1401203206 INTERCHANGEABLE
Washer,flat
Admiral Filter Company Llc
5440-01-192-700035006 INTERCHANGEABLE
Ladder,safety Step
Bauer Corp
5220-01-215-3638142D6289 INTERCHANGEABLE
Gage,profile
General Dynamics-Ots, Inc. Div Ordnance and Tactical Systems
3040-01-619-8691203206 INTERCHANGEABLE
Shaft,straight
Hamilton Jet, Inc.
Cross-Reference Index
Part NumberManufacturer
203206 PRIMARY Dover Pumps & Process Solutions Segment Inc Dba Blackmer Div Blackmer (USA)
E3373PC13 Dover Pumps & Process Solutions Segment Inc Dba Blackmer Div Blackmer (USA)
Related Parts
5440-00-061-8900INTERCHANGEABLE
STEPLADDER
202206
1660-00-822-3125INTERCHANGEABLE
TURBINE WHEEL ASSEMBLY,AIRCRAFT
203206
5310-01-171-1401INTERCHANGEABLE
WASHER,FLAT
203206
5440-01-192-7000INTERCHANGEABLE
LADDER,SAFETY STEP
35006
5220-01-215-3638INTERCHANGEABLE
GAGE,PROFILE
142D6289
3040-01-619-8691INTERCHANGEABLE
SHAFT,STRAIGHT
203206

Frequently Asked Questions

What is NSN 4320-00-577-7996?

NSN 4320-00-577-7996 is a Rotor,pump, manufactured by Dover Pumps & Process Solutions Segment Inc Dba Blackmer Div Blackmer, classified under FSC 4320 (No Item Name Available). Status: active.

What are the part numbers for NSN 4320-00-577-7996?

NSN 4320-00-577-7996 has 2 cross-referenced part numbers: 203206 (Dover Pumps & Process Solutions Segment Inc Dba Blackmer Div Blackmer), E3373PC13 (Dover Pumps & Process Solutions Segment Inc Dba Blackmer Div Blackmer).

What NSN replaces 4320-00-577-7996?

There are 6 known substitutes for 4320-00-577-7996: 5440-00-061-8900, 1660-00-822-3125, 5310-01-171-1401 and 3 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 203206?

Key specifications for 203206: Pump Design Control Activity: 07524; Special Features: 6 VANE TYPE;KEYWAY MTG;0.250 IN. W X 0.156 DP;FULL LG KEYWAY IN; Outside Diameter: 3.125 INCHES NOMINAL IN; Inside Diameter: 1.250 INCHES NOMINAL IN. 5 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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