PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

33104Impeller,pump,centrifugal

Westerbeke Corporation · NSN 4320-00-857-1076 · FSC 4320 · No Item Name Available
Verified by PartsTable
NSN 4320-00-857-1076 — this item is cataloged by the U.S. Government under National Stock Number 4320-00-857-1076. Primary manufacturer part number: 33104.
Features
  • Impeller,pump,centrifugal — FSC 4320
  • Keyway Quantity: 1
  • Hub Projection Length Beyond Wheel Side: 0.109 INCHES NOMINAL IN
  • Blade Quantity: 12
  • Overall Diameter: 2.222 INCHES NOMINAL IN
  • Keyway Width: 0.094 INCHES NOMINAL IN
  • Material: RUBBER CHLOROPRENE CLASS CR AND COPPER ALLOY
  • Mounting Method: KEY
Applications
  • Fluid transfer and circulation
  • Cooling system maintenance
  • Industrial process pumping
  • Applications requiring Rubber Chloroprene Class Cr and Copper Alloy construction
General Description

The Impeller,pump,centrifugal, cataloged under National Stock Number 4320-00-857-1076, is classified within Federal Supply Class 4320 (No Item Name Available) of the Pumps and Compressors group. The primary manufacturer of record is Westerbeke Corporation. Government technical data includes 17 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 5 commercial cross-references from 3 manufacturers, 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
NSN4320-00-857-1076
Primary Part Number33104
Item NameImpeller,pump,centrifugal
FSC / FSG4320 / 43 — No Item Name Available
ManufacturerWesterbeke Corporation
StatusACTIVE
Keyway Quantity1
Hub Projection Length Beyond Wheel Side0.109 INCHES NOMINAL IN
Blade Quantity12
Overall Diameter2.222 INCHES NOMINAL IN
Keyway Width0.094 INCHES NOMINAL IN
MaterialRUBBER CHLOROPRENE CLASS CR AND COPPER ALLOY
Mounting MethodKEY
Keyway Length0.529 INCHES NOMINAL IN
Hub Quantity1
Rotation Direction for Which DesignedCLOCKWISE OR COUNTERCLOCKWISE
Hub LocationSINGLE INSIDE CENTER
Keyway Depth0.050 INCHES NOMINAL IN
Hub Bore Diameter0.498 INCHES NOMINAL IN
Hub Length0.529 INCHES NOMINAL IN
Design TypeSINGLE WIDTH
Keyway TypeRECTANGULAR
Blade TypeRADIAL TIP
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
5330-00-147-968015132A INTERCHANGEABLE
Gasket
Brinkley Technology Group Llc Dba Hercules Manufacturing
5950-00-168-629611764 INTERCHANGEABLE
Reactor
Stanford Applied Engineering Inc
4940-00-169-770410077 INTERCHANGEABLE
Diaphragm Subassy
Spencer Industries Inc
5342-00-200-7608 INTERCHANGEABLE
Mount,resilient,weapon System
2520-00-231-599122205 INTERCHANGEABLE
Parts Kit,friction Clutch
Koehring Cranes, Inc Dba Terex Cranes Div Waverly Operations
5330-00-292-378911764 INTERCHANGEABLE
Seal,plain Encased
Skf Usa Inc. Dba Skf Aerospace Sealing Solutions
6340-00-327-9291117-64 INTERCHANGEABLE
Panel Assy,fire Det
City Electric Distributors Inc
5950-00-370-23750026-2104 INTERCHANGEABLE
Reactor
L3harris Technologies, Inc. Dba Harris Corp Div Harris Defense Communications
3110-00-554-3232204S INTERCHANGEABLE
Bearing,ball,annular
Skf Usa Inc.
5961-00-594-3070 INTERCHANGEABLE
Semiconductor Device,diode
Cross-Reference Index
Part NumberManufacturer
33104 PRIMARY Westerbeke Corporation (USA)
11764 Westerbeke Corporation (USA)
10077 Westerbeke Corporation (USA)
10077 Lear Siegler Inc Sherwood Div (USA)
10077 Stewart Clay Co Inc (USA)
Related Parts
5330-00-147-9680INTERCHANGEABLE
GASKET
15132A
5950-00-168-6296INTERCHANGEABLE
REACTOR
11764
4940-00-169-7704INTERCHANGEABLE
DIAPHRAGM SUBASSY
10077
5342-00-200-7608INTERCHANGEABLE
MOUNT,RESILIENT,WEAPON SYSTEM
2520-00-231-5991INTERCHANGEABLE
PARTS KIT,FRICTION CLUTCH
22205
5330-00-292-3789INTERCHANGEABLE
SEAL,PLAIN ENCASED
11764
6340-00-327-9291INTERCHANGEABLE
PANEL ASSY,FIRE DET
117-64
5950-00-370-2375INTERCHANGEABLE
REACTOR
0026-2104
3110-00-554-3232INTERCHANGEABLE
BEARING,BALL,ANNULAR
204S
5961-00-594-3070INTERCHANGEABLE
SEMICONDUCTOR DEVICE,DIODE
3040-00-607-7210INTERCHANGEABLE
LINING,FRICTION
ST11764
5315-00-616-5522INTERCHANGEABLE
KEY,WOODRUFF
MS35756-12

Frequently Asked Questions

What is NSN 4320-00-857-1076?

NSN 4320-00-857-1076 is a Impeller,pump,centrifugal, manufactured by Westerbeke Corporation, classified under FSC 4320 (No Item Name Available). Status: active.

What are the part numbers for NSN 4320-00-857-1076?

NSN 4320-00-857-1076 has 5 cross-referenced part numbers: 33104 (Westerbeke Corporation), 11764 (Westerbeke Corporation), 10077 (Westerbeke Corporation), 10077 (Lear Siegler Inc Sherwood Div), 10077 (Stewart Clay Co Inc).

What NSN replaces 4320-00-857-1076?

There are 12 known substitutes for 4320-00-857-1076: 5330-00-147-9680, 5950-00-168-6296, 4940-00-169-7704 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 33104?

Key specifications for 33104: Keyway Quantity: 1; Hub Projection Length Beyond Wheel Side: 0.109 INCHES NOMINAL IN; Blade Quantity: 12; Overall Diameter: 2.222 INCHES NOMINAL IN. 18 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com