PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

509100Pump Unit,centrifugal

Little Giant Pump Co · NSN 4320-01-242-1336 · FSC 4320 · No Item Name Available
Verified by PartsTable
NSN 4320-01-242-1336 — this item is cataloged by the U.S. Government under National Stock Number 4320-01-242-1336. Primary manufacturer part number: 509100.
Features
  • Pump Unit,centrifugal — FSC 4320
  • Prime Mover Quantity: 1
  • Maximum Discharge Flow Rate: 60.0 GALLONS PER MINUTE AND 41.66 GALLONS PER MINUTE AND 26.66 GALLONS PER MINUTE
  • Inclosure Type: FULLY INCLOSED
  • Current Rating in Amps: 2.2
  • Centrifugal Pump Impeller Quantity: 1
  • Pumping Element Operating Position: VERTICAL
  • Prime Mover Type: ELECTRIC MOTOR
Applications
  • Fluid transfer and circulation
  • Cooling system maintenance
  • Industrial process pumping
  • Applications requiring Iron Pump Basic construction
General Description

The Pump Unit,centrifugal, cataloged under National Stock Number 4320-01-242-1336, is classified within Federal Supply Class 4320 (No Item Name Available) of the Pumps and Compressors group. The primary manufacturer of record is Little Giant Pump Co. Government technical data includes 26 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 4 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN4320-01-242-1336
Primary Part Number509100
Item NamePump Unit,centrifugal
FSC / FSG4320 / 43 — No Item Name Available
ManufacturerLittle Giant Pump Co
StatusCANCELLED
Prime Mover Quantity1
Maximum Discharge Flow Rate60.0 GALLONS PER MINUTE AND 41.66 GALLONS PER MINUTE AND 26.66 GALLONS PER MINUTE
Inclosure TypeFULLY INCLOSED
Current Rating in Amps2.2
Centrifugal Pump Impeller Quantity1
Pumping Element Operating PositionVERTICAL
Prime Mover TypeELECTRIC MOTOR
Centrifugal Pump Impeller Suction TypeSINGLE
Discharge Connection Thread Size and Series/type Designator1.500-11-1/2 NPT
Centrifugal Pump DesignRADIAL FLOW
Unpackaged Unit Height14.500 INCHES NOMINAL IN
Total Head5.000 FEET AND 10.000 FEET AND 15.000 FEET FT
PhaseSINGLE
Voltage in Volts115.0
Frequency in Hertz60.0
Cooling MethodWATER COOLED
MaterialIRON PUMP BASIC
Prime Mover Power Rating0.333 HORSEPOWER
Pump Quantity1
Stage Quantity1
Discharge Connection TypeTHREADED INTERNAL
Discharge Connection Quantity1
Current TypeAC
Media for Which DesignedWATER, FRESH
Prime Mover Cooling MediumWATER, FRESH
Environmental ProtectionWATERPROOF
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 4
5961-00-200-1990351-7802-020 INTERCHANGEABLE
Semiconductor Devices,unitized
Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems
6635-00-545-8500 INTERCHANGEABLE
Tester,spring Resiliency
6910-01-188-985150-9100 INTERCHANGEABLE
Geo-Logic Reference
Ward's Natural Science Establishment Inc
2540-01-566-60983824743C1 INTERCHANGEABLE
Bag,thermometer
Nd Defense Llc
Cross-Reference Index
Part NumberManufacturer
509100 PRIMARY Little Giant Pump Co (USA)
4327K3 Mcmaster-Carr Supply Co (USA)
4327K3 Scotsman Industries Inc Div Scotsman Ice Systems (USA)
4327J1 Mcmaster-Carr Supply Co (USA)
Related Parts
5961-00-200-1990INTERCHANGEABLE
SEMICONDUCTOR DEVICES,UNITIZED
351-7802-020
6635-00-545-8500INTERCHANGEABLE
TESTER,SPRING RESILIENCY
6910-01-188-9851INTERCHANGEABLE
GEO-LOGIC REFERENCE
50-9100
2540-01-566-6098INTERCHANGEABLE
BAG,THERMOMETER
3824743C1

Frequently Asked Questions

What is NSN 4320-01-242-1336?

NSN 4320-01-242-1336 is a Pump Unit,centrifugal, manufactured by Little Giant Pump Co, classified under FSC 4320 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 4320-01-242-1336?

NSN 4320-01-242-1336 has 4 cross-referenced part numbers: 509100 (Little Giant Pump Co), 4327K3 (Mcmaster-Carr Supply Co), 4327K3 (Scotsman Industries Inc Div Scotsman Ice Systems), 4327J1 (Mcmaster-Carr Supply Co).

What NSN replaces 4320-01-242-1336?

There are 4 known substitutes for 4320-01-242-1336: 5961-00-200-1990, 6635-00-545-8500, 6910-01-188-9851 and 1 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 509100?

Key specifications for 509100: Prime Mover Quantity: 1; Maximum Discharge Flow Rate: 60.0 GALLONS PER MINUTE AND 41.66 GALLONS PER MINUTE AND 26.66 GALLONS PER MINUTE; Inclosure Type: FULLY INCLOSED; Current Rating in Amps: 2.2. 27 total characteristics are documented in the Federal Logistics Information System.

Is NSN 4320-01-242-1336 still in active supply?

NSN 4320-01-242-1336 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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