PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

20057Pump,reciprocating

Hydro-Aire Aerospace Corp · NSN 4320-00-602-0597 · FSC 4320 · No Item Name Available
Verified by PartsTable
NSN 4320-00-602-0597 — this item is cataloged by the U.S. Government under National Stock Number 4320-00-602-0597. Primary manufacturer part number: 20057.
Features
  • Pump,reciprocating — FSC 4320
  • Discharge Connection Thread Size and Series/type Designator: 0.437-20 UNF
  • Intake Connection Thread Size and Series/type Designator: 0.750-16 UNF
  • Drive Shaft Type: TONGUE
  • Media for Which Designed: HYDROCARBON FUELS AND OILS
  • Intake Connection Quantity: 1
  • Intake Connection Type: THREADED INTERNAL
  • Drive Shaft End Diameter: 1.500 INCHES NOMINAL IN
Applications
  • Fluid transfer and circulation
  • Cooling system maintenance
  • Industrial process pumping
General Description

The Pump,reciprocating, cataloged under National Stock Number 4320-00-602-0597, is classified within Federal Supply Class 4320 (No Item Name Available) of the Pumps and Compressors group. The primary manufacturer of record is Hydro-Aire Aerospace Corp. Government technical data includes 17 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 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
NSN4320-00-602-0597
Primary Part Number20057
Item NamePump,reciprocating
FSC / FSG4320 / 43 — No Item Name Available
ManufacturerHydro-Aire Aerospace Corp
StatusACTIVE
Discharge Connection Thread Size and Series/type Designator0.437-20 UNF
Intake Connection Thread Size and Series/type Designator0.750-16 UNF
Drive Shaft TypeTONGUE
Media for Which DesignedHYDROCARBON FUELS AND OILS
Intake Connection Quantity1
Intake Connection TypeTHREADED INTERNAL
Drive Shaft End Diameter1.500 INCHES NOMINAL IN
Pump Reciprocating DesignDOUBLE ACTING
Pumping Element TypePISTON
Reciprocating Stroke TypeFIXED
Discharge Connection Quantity1
Operation MethodMANUAL
Drive Connection TypeRIGID COUPLED
Cylinder Quantity1
Pumping Element Operating PositionHORIZONTAL
Discharge Pressure000.0 ENERGY EFFICIENT - FEMP - LOW STANDBY POWER - OFFICE EQUIPMENT -INTEGRATED COMPUTERS
Discharge Connection TypeTHREADED INTERNAL
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
2540-00-123-7216B-2001 INTERCHANGEABLE
Chamber Assembly
Dcm Manufacturing, Inc.
5133-00-228-1344 INTERCHANGEABLE
Drill,twist
4730-00-274-920920057 INTERCHANGEABLE
Packing Nut
Northrop Grumman Systems Corporation Div Marine Systems
3120-00-358-225820057 INTERCHANGEABLE
Bearing,sleeve
Brinkley Technology Group Llc Dba Hercules Manufacturing
4320-00-540-0205 INTERCHANGEABLE
Pump,reciprocating
4320-00-541-6954915-8D27 INTERCHANGEABLE
Pump,reciprocating
Parker-Hannifin Corporation Dba Pneutronics Div Hydraulic Valve Division
1660-00-617-700420057 INTERCHANGEABLE
Plate,thrust
Avox Systems Inc Dba Avox Systems Inc
2520-00-862-709020057 INTERCHANGEABLE
Parts Kit,universal Joint
Trw Inc Trw Intl Trade Government Sales Dept
2540-01-023-0172AT58147 INTERCHANGEABLE
Shaft and Pivot Assembly
Deere & Company Dba Deere John Co
5950-01-030-4045240-2725-010 INTERCHANGEABLE
Reactor
Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems
Cross-Reference Index
Part NumberManufacturer
AN6248-2 Aeronautical Standards Group Dept of Navy and Air Force (USA)
20057 PRIMARY Hydro-Aire Aerospace Corp (USA)
4320006020597 E.c.a Etablissement Central Des Approvisionnements Des Forces Armees Royales
Related Parts
2540-00-123-7216INTERCHANGEABLE
CHAMBER ASSEMBLY
B-2001
5133-00-228-1344INTERCHANGEABLE
DRILL,TWIST
4730-00-274-9209INTERCHANGEABLE
PACKING NUT
20057
3120-00-358-2258INTERCHANGEABLE
BEARING,SLEEVE
20057
4320-00-540-0205INTERCHANGEABLE
PUMP,RECIPROCATING
4320-00-541-6954INTERCHANGEABLE
PUMP,RECIPROCATING
915-8D27
1660-00-617-7004INTERCHANGEABLE
PLATE,THRUST
20057
2520-00-862-7090INTERCHANGEABLE
PARTS KIT,UNIVERSAL JOINT
20057
2540-01-023-0172INTERCHANGEABLE
SHAFT AND PIVOT ASSEMBLY
AT58147
5950-01-030-4045INTERCHANGEABLE
REACTOR
240-2725-010
4320-01-038-2443INTERCHANGEABLE
PUMP,HYDRAULIC RAM,HAND DRIVEN
4320-01-149-2062INTERCHANGEABLE
PUMP,HYDRAULIC RAM,HAND DRIVEN
58313-42685-1

Frequently Asked Questions

What is NSN 4320-00-602-0597?

NSN 4320-00-602-0597 is a Pump,reciprocating, manufactured by Hydro-Aire Aerospace Corp, classified under FSC 4320 (No Item Name Available). Status: active.

What are the part numbers for NSN 4320-00-602-0597?

NSN 4320-00-602-0597 has 3 cross-referenced part numbers: AN6248-2 (Aeronautical Standards Group Dept of Navy and Air Force), 20057 (Hydro-Aire Aerospace Corp), 4320006020597 (E.c.a Etablissement Central Des Approvisionnements Des Forces Armees Royales).

What NSN replaces 4320-00-602-0597?

There are 12 known substitutes for 4320-00-602-0597: 2540-00-123-7216, 5133-00-228-1344, 4730-00-274-9209 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 20057?

Key specifications for 20057: Discharge Connection Thread Size and Series/type Designator: 0.437-20 UNF; Special Features: 0.7 CU IN. PER CYCLE DISCHARGE CAPACITY; Intake Connection Thread Size and Series/type Designator: 0.750-16 UNF; Drive Shaft Type: TONGUE. 18 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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