PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

2902100Impeller,pump,centrifugal

W S Darley & Co · NSN 4320-00-496-4064 · FSC 4320 · No Item Name Available
Verified by PartsTable
NSN 4320-00-496-4064 — this item is cataloged by the U.S. Government under National Stock Number 4320-00-496-4064. Primary manufacturer part number: 2902100.
Features
  • Impeller,pump,centrifugal — FSC 4320
  • Design Type: SINGLE WIDTH
  • Hub Bore Diameter: 1.3750 INCHES MINIMUM AND 1.3755 INCHES MAXIMUM IN
  • Hub Length: 2.500 INCHES NOMINAL IN
  • Hub Location: SINGLE INSIDE OFFSET
  • Keyway Type: SQUARE
  • Rotation Direction for Which Designed: COUNTERCLOCKWISE
  • Keyway Depth: 0.094 INCHES NOMINAL IN
Applications
  • Fluid transfer and circulation
  • Cooling system maintenance
  • Industrial process pumping
  • Applications requiring Copper Alloy construction
General Description

The Impeller,pump,centrifugal, cataloged under National Stock Number 4320-00-496-4064, is classified within Federal Supply Class 4320 (No Item Name Available) of the Pumps and Compressors group. The primary manufacturer of record is W S Darley & Co. Government technical data includes 18 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 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: Cancelled.

Technical Specifications
ParameterValue
NSN4320-00-496-4064
Primary Part Number2902100
Item NameImpeller,pump,centrifugal
FSC / FSG4320 / 43 — No Item Name Available
ManufacturerW S Darley & Co
StatusCANCELLED
Design TypeSINGLE WIDTH
Hub Bore Diameter1.3750 INCHES MINIMUM AND 1.3755 INCHES MAXIMUM IN
Hub Length2.500 INCHES NOMINAL IN
Hub LocationSINGLE INSIDE OFFSET
Keyway TypeSQUARE
Rotation Direction for Which DesignedCOUNTERCLOCKWISE
Keyway Depth0.094 INCHES NOMINAL IN
Keyway Length2.500 INCHES NOMINAL IN
Blade Quantity6
Mounting MethodKEY
Hub Quantity1
Blade TypeBACKWARD CURVE
Overall Diameter12.969 INCHES NOMINAL IN
FSC Application DataFIRE TRUCKS
Keyway Width0.188 INCHES NOMINAL IN
Hub Projection Length Beyond Wheel Side1.3125 INCHES NOMINAL IN
MaterialCOPPER ALLOY
Keyway Quantity4
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
4320-00-142-1692 INTERCHANGEABLE
Pump Unit,centrifugal
5120-00-232-5711F101 INTERCHANGEABLE
Socket,socket Wrench
Idsc Holdings Llc Div Snap-on Industrial, a Div. of Idsc Holdings , Llc
5310-00-394-6386F101 INTERCHANGEABLE
Nut,impeller
Circor Naval Solutions Llc Dba Warren Pumps
5910-00-407-451410689646 INTERCHANGEABLE
Capacitor,fixed,ceramic Dielectr
Us Army Aviation and Missile Command
3120-00-818-0265F101 INTERCHANGEABLE
Bearing,sleeve
Beemer Precision Inc
5905-00-878-3216F10J1R0 INTERCHANGEABLE
Resistor,fixed,wire Wound,induct
Ohmite Holding, L.l.c. Dba Ohmite Manufacturing
6695-00-926-4502 INTERCHANGEABLE
Analyzing Kit,meat Fat Content
3455-00-971-890817614 INTERCHANGEABLE
Cutter,milling,end
New York Twist Drill Inc
5920-01-131-3999F101 INTERCHANGEABLE
Fuse
Hach Company Dba Hach Co
7330-01-197-5004 INTERCHANGEABLE
Filter,vacuum Coffee Maker
Cross-Reference Index
Part NumberManufacturer
2902100 PRIMARY W S Darley & Co (USA)
F101 W S Darley & Co (USA)
12F500 W S Darley & Co (USA)
101-2 W S Darley & Co (USA)
Related Parts
4320-00-142-1692INTERCHANGEABLE
PUMP UNIT,CENTRIFUGAL
5120-00-232-5711INTERCHANGEABLE
SOCKET,SOCKET WRENCH
F101
5310-00-394-6386INTERCHANGEABLE
NUT,IMPELLER
F101
5910-00-407-4514INTERCHANGEABLE
CAPACITOR,FIXED,CERAMIC DIELECTR
10689646
3120-00-818-0265INTERCHANGEABLE
BEARING,SLEEVE
F101
5905-00-878-3216INTERCHANGEABLE
RESISTOR,FIXED,WIRE WOUND,INDUCT
F10J1R0
6695-00-926-4502INTERCHANGEABLE
ANALYZING KIT,MEAT FAT CONTENT
3455-00-971-8908INTERCHANGEABLE
CUTTER,MILLING,END
17614
5920-01-131-3999INTERCHANGEABLE
FUSE
F101
7330-01-197-5004INTERCHANGEABLE
FILTER,VACUUM COFFEE MAKER
5120-01-350-1003INTERCHANGEABLE
SOCKET,SOCKET WRENCH
5999-01-407-5559INTERCHANGEABLE
CONTACT,ELECTRICAL
901598-001

Frequently Asked Questions

What is NSN 4320-00-496-4064?

NSN 4320-00-496-4064 is a Impeller,pump,centrifugal, manufactured by W S Darley & Co, classified under FSC 4320 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 4320-00-496-4064?

NSN 4320-00-496-4064 has 4 cross-referenced part numbers: 2902100 (W S Darley & Co), F101 (W S Darley & Co), 12F500 (W S Darley & Co), 101-2 (W S Darley & Co).

What NSN replaces 4320-00-496-4064?

There are 12 known substitutes for 4320-00-496-4064: 4320-00-142-1692, 5120-00-232-5711, 5310-00-394-6386 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 2902100?

Key specifications for 2902100: Design Type: SINGLE WIDTH; Hub Bore Diameter: 1.3750 INCHES MINIMUM AND 1.3755 INCHES MAXIMUM IN; Hub Length: 2.500 INCHES NOMINAL IN; Hub Location: SINGLE INSIDE OFFSET. 19 total characteristics are documented in the Federal Logistics Information System.

Is NSN 4320-00-496-4064 still in active supply?

NSN 4320-00-496-4064 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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